Ross-Tech VCDS User guide

User’s Manual

Diagnostic Software for

VW/Audi/SEAT/Skoda

2013 Edition

by Ross-Tech, LLC.

881 Sumneytown Pike

Lansdale, PA 19446

+1-267-638-2300

www.Ross-Tech.com

system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Ross-Tech, LLC. The information contained herein is designed only for use with VCDS diagnostic software. Ross-Tech, LLC. is not responsible for any use of this information as applied to this or other diagnostic equipment.

Neither Ross-Tech, LLC. nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or failure to comply with Ross-Tech, LLC’s written instructions.

By using VCDS, you acknowledge that this Program is provided "as is" and "with all faults, defects and errors" and that all use of the Program is at your own full risk. It has been extensively tested, but we cannot guarantee it will work correctly with every system in every car. We will make our best effort to fix any bugs and to enhance the program, but we specifically disclaim any liability for damage to your computer or your car, and we do not promise to have any particular enhancements available on any specific date.

VCDS Table of Contents

Subject

Section

Getting Started

Main Screen

Auto-Scan

Select Control Module

Open Controller

Fault Codes

Measuring Blocks

Data Logging

Single Reading

Supported Codes

Readiness

Advanced Identification

Advanced Measuring Values

Acceleration Measurement

7-digit PIN/SKC Dialog

Basic Settings

Output Tests

Recode / Long Coding

Adaptation

Security Access

SRI Reset

Generic OBD2

Applications

Transport Mode

Controller Channels Map

EDC-15-16 Mileage

Control Module Finder

Optical Bus Diagnostics

Options

About

VC-Scope

TDI Timing Checker

What’s New in 2013

Please refer to our website for the VCDS FAQ, Problems/Issues, and Function pages: http://www.ross-tech.com/vag-com/vag-com-faq.html

http://www.ross-tech.com/vag-com/issues.html http://www.ross-tech.com/vag-com/vag-functions.html

VCDS - Getting Started - Section 1-A

Thank you for purchasing VCDS, which allows you to turn a Windows PC into a powerful diagnostic tool for VW/Audi/SEAT/Skoda vehicles from 1990 through the latest models.

Read This First!

Before plugging anything in, you must

first install VCDS software on your PC.

Step #1

Go to our website and click on Download at the top of the screen to download and install the latest version of VCDS: www.Ross-Tech.com

Run the installation file that you have downloaded and follow the onscreen instructions and allow VCDS to install in its default directory. You will also be given a screen with several choices for UBS drivers, it is recommended to leave these in their default settings unless instructed otherwise by Ross-Tech. Make sure to allow the USB drivers to install after the main program installation has finished. ►

The VCDS Pro-Kit comes with a CD containing our software as well. If possible it is always a good idea to download the latest version from our website.

◄Step #2

Connect the USB end of your USB Interface or the Serial end of your Serial Interface to the correct port on your PC. If your PC is further from the vehicle’s diagnostic port than 6 feet, connect an approved Extension Cable between the PC and the Interface. The appropriate extension is included in the ProKit and additional ones are available from our web store.

Getting Started - Section 1-B

Step #3 (USB Only) ►

If you are using a Serial Interface then you can proceed to step #4. If you are using a USB Interface, a message like this should pop up: ►

The drivers many install automatically in Windows 7 or Vista. If you are using XP or W2000, click on the Found New Hardware message and the Found New Hardware Wizard should start up. If you are prompted with the choice, pick “No, Not This Time” when asked if you want to connect to the Internet to search for drivers. Select "Install the software automatically (Recommended)" then click [Next >]

The process should be automated but you may need to click “Continue Anyway” part way

through the process. If, for some reason, you installed the USB Interface without following the above

instructions, and VCDS does not work correctly, go into your PC’s Device Manager while the USB Interface is connected.

You can find the Device Manager by right-clicking on My Computer in XP or on Computer in Vista or 7. Select Manage to bring up Computer Management. On the left side of the screen under System Tools, select Device Manager.

Find the “VCDS Compatible USB Interface” or similar and delete it. It may be under “Other Devices” or under “Universal Serial Bus Controllers”. Next, unplug the USB Interface from

your PC, wait 5 seconds and plug it back in. Proceed with the installation starting on Step

Step #4 ►

Connect the car end of your

Interface to your vehicle’s Diagnostic Port. ►

Turn the vehicle’s ignition switch to the ON position. Make sure the key is turned far

enough that the dash lights are fully illuminated. The engine may either be running or stopped.

◄ If your vehicle has a 2x2 port (some pre-1996 vehicles), then use the optional 2x2 Adapter between the Interface and the ports in the car. This is included in the Pro-Kit.

Getting Started - Section 1-C

Step #5 ►

Start the VCDS program on your PC through either the Start Menu or the VCDS icon on your Desktop.

◄ Step #6

From the Main Screen in VCDS click the [Options] button to go into the Options screen.

Step #7►

Once you are in the Options Screen, Select the correct

port for your PC’s

USB Port (USB) or Serial Port (typically COM1 or COM2) and click the [Test] button. Ensure that VCDS finds your interface.

Getting Started - Section 1-D

Interface Name:

Expected Test Result:

HEX-USB+CAN, HEX-COM+CAN

K1: OK K2: OK CAN: OK (when tested on a car with CAN) CAN: Not Ready (on cars w/o CAN)

KII-USB, KEY-USB, KEY-COM,HEX-USB, HEX-COM

K1: OK K2: OK CAN: Not Supported

Micro-CAN

K1: Not Supported K2: Not Supported CAN: OK (when tested on a Mk5 based car with CAN)

Step #8 ►

You should see a message like this:  If the Interface Status is “Not Found!”,

check the connections at the car and PC. Make sure both are plugged in securely. Serial Interfaces get their power from the vehicle so they will not be recognized at all if not plugged into a car.

 Adapter Type should always be “Ross-

Tech” followed by the name of the

Interface such as “HEX-USB+CAN”.

 Version indicates the firmware version of

your Interface. It may be updated by new versions of VCDS, if so follow the prompts on the screen.

If K1 or K2 status are ”Short to Ground” or “Short to +12V” then you may have a short or an open circuit in the car’s diagnostic port, often caused by the Aftermarket Radio Problem, See this page on our website for more info:

http://www.ross-tech.com/vag-com/aftermarket-radio.html Once you have tested successfully, click [OK] then click [Save] to apply this configuration,

you will be returned to the Main Screen. Click on [Select] to view the Select Control Module Screen. Select one of your car's Control Modules such as Engine.

Note: Your car will not have all the Control Modules listed in VCDS, only the functional ones that were installed in your vehicle. See the Applications Page for your car on our

Website for more info: www.Ross-Tech.com/vag-com/cars/applications/

After VCDS has connected, click on [Fault Codes] to check for Fault Codes (DTCs). Repeat the process for each of your car's Control Modules. If you encounter problems, see

the FAQ on our website first: http://www.ross-tech.com/vag-com/vag-com-faq.html If you still have problems, feel free to contact us with full details about your PC and vehicle,

preferably while you are in front of both:

Ross-Tech, LLC support@ross-tech.com Tel: +1 267-638-2300

VCDS - Main Screen - Section 2-A

This screen appears when you start VCDS by clicking the shortcut on your Desktop or by selecting VCDS from the Start Menu. These screen-shots were taken using Microsoft Windows 7 with the "Aero" style. If you are not using 7 Aero, expect the screens to look different but the functions will be the same.

On this screen, you have 8 buttons that you can click:

[Select] (see Section 4 of this manual) [Auto-Scan] (see Section 3 of this manual) [SRI Reset] (see Section 22 of this manual) [OBD-II] (see Section 23 of this manual) [Applications] (see Section 24 of this manual) [Options] (see Section 30 of this manual) [About] (see Section 31 of this manual) Each of the above buttons is described in its own section in this manual. [Exit] (This closes the VCDS program)

VCDS – Auto Scan - Section 3-A

(VAG 1551/1552 function 00)

This function scans each controller in the vehicle to retrieve controller information - VAG Part Numbers, Component number, Soft. Coding, WSC, and fault codes.

Important! AutoScan is probably the single most important function in VCDS. We

recommend that you run and SAVE a complete AutoScan on every single vehicle that you work on. This will give you a history of the vehicle that can be invaluable in the

future, for example if an ABS module fails and needs to be replaced. Referring back to earlier Coding is often MUCH simpler than trying to figure out such values from scratch.

First, you must Select Chassis Type: There are dozens of different control modules that exist across the entire range of VW/Audi vehicles. No one car has all Modules! Newer cars have more, older cars have fewer. Because of this, you must select a Chassis Type that contains only those modules that are plausible for a given chassis. There are some exceptions but in general, the Chassis Type is the 7th and 8th digits of the VIN number. For example WAUZZZ4F36N111022 has 7th and 8th digits of 4F and is a "4F,Audi A6 C6". For additional help determining chassis type

see this page on our Website: www.Ross-Tech.com/vag-com/cars/applications/ If you select Auto Detect (CAN Only) as the Chassis Type on newer cars which have a

fully CAN-based diagnostic system, VCDS can automatically determine which modules are installed in a particular car and perform an Auto-Scan of exactly those modules. This can make the Auto-Scan considerably faster.

Auto Scan cont. - Section 3-B

There is a file in the VCDS directory called AutoScan.txt, which contains all of the vehicle profiles. It can be edited by simply clicking on the hyperlink above the Chassis Type selection. This will open the file in your default Text editor (like Notepad) to create a custom profile for your vehicle. To help you figure out which controllers are in your car, you can run the Control Module Finder in section 28 of this manual.

The Display Freeze Frame Data checkbox adds Freeze Frame data for Fault Codes on control modules using the KWP-2000 protocols. Not all control modules support this freezeframe data. As a rule of thumb, cars which were re-designed after 2003 will likely have some control modules which support it, and older designs will not. There's no harm in leaving this enabled in any case. However, un-checking it can make the results less cluttered in a scan which contains many fault codes.

[Start] This begins the Auto Scan. Be aware; this process can take several minutes. While the scan is running, VCDS will cycle through the Open Controller and Fault Code screens for each controller before returning to the Auto Scan screen. On newer control modules which have different Hardware and Software part numbers, Auto-Scan includes the Hardware

Part Number as shown in the screenshots. Once the scan completes, Double-clicking on any of the Control Module names in RED will open the Fault Codes screen for that controller and allow you to clear the codes.

[Stop]

This stops the Auto-Scan. The Auto-Refresh box can be handy because it can show when a fault code appears in a

particular system.

Auto-Scan cont. - Section 3-C

[Gateway Installation List]

Only available only on Gateways in cars using a direct CAN connection for diagnostics. This function is also accessible from the Applications Screen. This very fast function takes about 3 seconds to query the car's Gateway to find out what modules are installed in the car and what their status is. Any modules having fault codes should show a "Malfunction" and will be highlighted in RED. Double-clicking on any of the Control Module names in RED will open the Fault Codes screen for that controller and allow you to clear the codes. Modules are directly accessible from this screen by double clicking on the appropriate line. Changes to the Gateway Installation List can be made using the Gateway Coding function The following screen-shot is from an Audi A6 (C6/4F):

[Clear All DTCs]

This function is only available with our HEX Interfaces and is implemented in two ways. On pre-CAN-Bus vehicles, VCDS will access each control module and clear DTCs from each one individually. On vehicles using CAN-Bus for diagnostics, VCDS performs this function without accessing all the control modules individually. If you are not using a HEX Interface then you'll need to go into each module that has faults to clear them individually. This function is also accessible from the Applications Screen. The following warning should pop up:

Auto-Scan cont. - Section 3-D

The VIN should be retrieved automatically from all cars which "know" their VIN. Also in control modules that provide it, engine codes and Jxxx component identifiers are shown as well.

Results:

If you close the Auto-Scan dialog, any data in its output box will be lost. If you would like to keep a record, click the [Copy] button first, then you can paste the results into the application of your choice, such as MS Word or Notepad.

[Print]

This function sends the results to your printer.

[Save]

This function saves the results to a text file in our Logs directory, typically in C:\Ross-Tech\VCDS\Logs\

[Clear]

This erases your results. This does NOT erase the fault codes from any of the controllers. You'll need to go into each controller to Clear Codes or use the Clear All DTC's function for that.

To return to the Main Screen, click [Close]

VCDS- Select Control Module- Section 4-A

The various computers in the car are called “Control Modules” or “Controllers”. On this screen, you select which Control Module you want to "talk" to. To establish communications with a particular Control Module, simply click on the appropriate button. For example, click on the button for [01 – Engine] to connect to the engine controller.

Module Tabs: Each tab on the top of this screen contains a number of different controllers grouped by category. In CAN based cars that have a proper Gateway supporting an Installation List, VCDS will automatically populate one or more Installed tabs containing buttons for only those control modules that are actually installed in the car. It does take about 1.5 seconds to get the list from the Gateway, so a bit of a delay when clicking [Select] is normal / expected. When used on a car which does not have a Gateway that supports an Installation List, the old-style Common tab will still be shown. For customers who use VCDS primarily on older cars which do not have an Installation List available, this feature can be disabled on the User Interface and Identification tab of the Options screen. The other tabs are: Drivetrain, Chassis, Comfort/Conv., Electronics 1, Electronics 2, and LT3. Each possible controller is listed as a number and a description, i.e., [01-Engine]. The number corresponds to the controller number that you'd find in your Factory Repair Manual in the instructions for using a VAG-1551 or other factory diagnostic tool. VCDS has buttons for all control module addresses currently supported by the factory diagnostic tools.

Direct Entry: Addresses can be accessed manually - just type the number and click [Go!] To return to the Main Screen, click [Go Back] Note: Your car will not have all the Control Modules listed in VCDS, only the ones that

were installed in your vehicle. See the Applications Page for your car on our Website for

more info: www.Ross-Tech.com/vag-com/cars/applications/

VCDS - Open Controller- Section 5-A

This screen will appear when VCDS is establishing communications with any of the Control Modules shown on the Select Control Module screen.

Comm Status Shows the status of the current communications session. Once communications have been established:

 IC= Shows the number of times the session has been initialized. If IC increases

beyond 1, communications are less than 100% reliable.

 TE= is a counter of transmitter errors within individual packets. TE greater than 0

can indicate unreliable communication.

 RE= is a counter of receive errors within individual packets. RE greater than 0

can indicate unreliable communication.

 Protocol indicates whether the controller speaks KWP-1281 , KWP-2000 , CAN,

or UDS. Different functions and behavior can be expected depending on which

protocol is used by each controller. VCDS communicates fine with all four of these protocols.

 A rotating cursor shows that communication is active.

Open Controller cont. - Section 5-B

Controller Info

Once the communications session has been established, all of the Control Module’s "Identification" data is presented here.

 VAG Number is the VW/Audi part number for this controller. All of the digits, both

numbers and letters, make up the part number. In some cases this number may be different from the number on the sticker on the module itself, specifically if the module has been reflashed by a dealer per a service campaign.

 Component contains more identification information about the controller and

may contain a version number for the controller's internal firmware. The firmware level is also known as the software version for the controller. In the above example, the software version is 0010 since these are the digits shown at far right in the Component field.

 Soft. Coding is the Software Coding that determines various options for the

controller. Note: Some older Control Modules are not "codeable" and you may see a Bosch part number or other information in this field.

 Shop # identifies the WorkShopCode ( WSC) stored in the scan-tool that

performed the last Coding or Adaptation procedure in this Control Module.

 The Extra fields can show VIN and Immobilizer information or slave controller

part numbers in some vehicles.

Basic Functions

This grouping of "Safe" functions is used to read various data from the Control Module.

Advanced Functions

These functions are capable of making various "programming" changes to the Control Module. You should refer to the Factory Repair Manual for your particular car (or to other documented procedures) before "playing" with these functions. It is completely possible to render your vehicle inoperable or damage components if you make changes in this section without the correct information and training.

It is normal for some buttons to be grayed out on some control modules. This is an indication that the control module in question doesn't support those functions. Each of the function buttons is detailed on the following pages.

Use [Close Controller, Go Back - 06] to properly close the communications session and return to the Select Control Module screen.

VCDS - Fault Codes - Section 6-A

(VAG 1551/1552 functions 02 and 05)

On this screen, VCDS shows you any DTCs (“Diagnostic Trouble Codes” or Fault Codes) present in the control module in which a communications session is currently active. VCDS shows the DTC numbers and also decodes each DTC into meaningful text.

At the top of the screen is shown the VAG Number and Component number as found on the Open Controller screen.

VCDS tells you how many fault codes have been found and displays each of them. The 5,6, or 7-digit number is a standardized VAG fault code, which can be searched in the Factory Repair Manuals. The text is a description of the part and failure mode. The letter and number combination in parentheses is the DIN Component Identifier. This is followed by elaborators describing the condition of the fault such as “004” meaning “No Signal/Communication”. The second line contains the P-code, or generic OBD-II code (if it exists, there are thousands of VAG codes without generic OBD-II equivalents).

The Use Aggressive Mode checkbox applies only to UDS/ODX modules and is checked by default. When checked, VCDS will retrieve more faults than even the factory VAS tools in some cases. Uncheck this if you wish to correlate VCDS results with results from a VAS used in manual (non-guided functions) mode. The AutoScan function always uses Aggressive Mode.

Fault Codes cont. - Section 6-B

Number

Meaning

Undefined by the manufacturer.

The fault has a strong influence on drivability, immediate stop is required.

The fault requires an immediate service appointment.

The fault doesn't require an immediate service appointment, but it should be corrected with the next service appointment.

The fault recommends an action to be taken, otherwise drivability might be affected.

The fault has no influence on drivability.

The fault has a long term influence on drivability.

The fault has an influence on the comfort functions, but doesn't influence the car’s drivability.

General Note

The Display Freeze Frame Data checkbox adds Freeze Frame data for Fault Codes on control modules using the KWP-2000 / CAN / UDS protocols. Keep in mind that many control modules are not aware of the actual date and time, so they may display bogus dates, just as they do with the factory scan tools. Note: Not all control modules fully support this. As a rule of thumb, cars which were re-designed after 2003 will likely have some control modules that support it, and older designs will not. There's no harm in leaving this enabled in any case. However, un-checking it can make the results less cluttered in a scan which contains many fault codes. In vehicles that do not support Freeze Frame, that checkbox will not be present.

One component of Freeze Frame data is the Fault Priority number as described below:

Fault Frequency shows how many times the conditions that caused the fault have recurred, during all driving cycles. So, if you have a fault with a Frequency of 11, then conditions sufficient to trigger the fault have happened 11 times since the fault was stored. The counter can have values from 0 to 254. It is incremented with each occurrence of the fault (during all driving cycles).

The Reset counter is a number that has been pre-assigned to each fault, with the number of problem-free driving cycles before the fault presumably clears itself. Each time a driving cycle occurs, and the conditions sufficient to trigger the fault do NOT occur, then the reset counter should go down by one. So if you have a fault with a Reset Counter of 40, if the controller goes through a problem-free driving cycle then that number should go down to

39.

Fault Codes cont. - Section 6-C

[Print Codes] will print a Fault Code Report. If your PC is not connected to a printer when this button is pressed, be sure to use Windows to set the printer to "Work Off-Line" first! Later, when you connect the PC to a printer, un-check "Work Off-Line" to print the report.

[Copy Codes] will copy your fault codes to Windows Clipboard. Once you have pressed the Copy Codes button, you may paste the results into the application of your choice, such as MS Word or Notepad.

[Save Codes] will save a plain-text Fault Code Report to the Logs directory of your PC, typically: C:\ross-tech\vcds\Logs\

[Clear Codes - 05] will send a message to the controller asking it to erase the DTCs from its memory. Some faults cannot be cleared (such as internal processor faults) and the control module may explicitly refuse or may just still display the fault after a clearing attempt. Be aware, clicking on Clear Codes does not fix the problem that caused the fault! DTCs should only be erased after correcting the condition(s) that caused them in the first place. Note: There is no way to erase individual DTCs while leaving others alone. This is not a limitation in VCDS. It's just the way the VAG protocols work. Note: In some cases, the ignition must be cycled after clearing codes but before performing certain functions such as Basic Settings.

[Done, Go Back] takes you back to the Controller Information Screen where you can select other functions.

VCDS - Measuring Blocks - Section 7-A

(VAG 1551/1552 function 08)

On this screen, you can read all sorts of data from the Control Module in real-time. Use [Up] and [Dn] to scroll through the available groups (000 - 255 on most Control

Modules) and you can view up to three groups at the same time. Don't become discouraged when you find some that say "ERROR: Group xxx Not Available" or if you find some groups where the fields are all blank. Most 1996 and newer ECU's have Groups in the 200 range, but there are often "gaps" in the numbers.

You can also type a Group number into any or all of the Group boxes and click [Go!] Dual ECU's: For vehicles with dual ECU's (like the Audi R8), data from both ECU's can be

viewed simultaneously by accessing [31-Engine Other] as shown here:

Measuring Blocks cont. - Section 7-B

You can [Log] the data from the measuring blocks. For more information see Data Logging (Section 8 of this manual).

[Switch to Basic Settings] can be used to go to Basic Settings for the Group that is currently being displayed. This should be done only under guidance from the Service Manual or when following some other documented procedure. For more information, see the Basic Settings function (Section 17 of this manual).

Note: Multiple Groups are not permitted in Basic Settings. The [Switch To Basic Settings] button is intentionally disabled if you have groups "running" in the second and

third rows. To stop a running group, click on the box that displays the group number (as though you wanted to enter a new number). The button is also disabled on controllers using KWP-2000/CAN/UDS. On those, you need to go directly to the Basic Settings screen.

The data presented in each Measuring Block Group varies greatly from Control Module to Control Module and between different models and years. Some groups are documented in the Factory Repair Manuals, but many are not. Feel free to explore the Control Modules in your car by scrolling through all the Groups. You can't hurt anything with the Measuring Blocks function!

VCDS will attempt to "scale" the raw data coming from the Control Module into realworld units like degrees C, km/h, etc. At the present time, all scaling conversions are to metric units.

Note: Group 000 and any other group that displays 10 fields instead of 4 is an exception. No scaling is possible because the Control Module provides no "Data Type" information for these. Groups of this type can only be displayed in the top row of the screen.

VCDS also tries to elaborate as much as possible what the data means. Unfortunately, the "Data Type" information coming from the Control Module is not that precise. For example: VCDS can tell that a particular field contains a Temperature, but the data from the Controller doesn't tell us whether this is the Coolant Temperature or the Intake Air Temperature.

To reduce the confusion, VCDS supports Label Files and will display the name of the Label File on the top left corner of the screen. If you click on the name of the Label File, the file will open in Notepad or whatever program you have set to handle *.LBL files. The newer encrypted *.CLB files cannot be opened in the same manner. When a Label file for the Control Module you are looking at does not exist, VCDS will come up with an "educated guess" for what a particular Data Type means. The dealers' VAG-1551 and 1552 scantools do not provide any elaboration; they only show what’s in the display fields!

Group 000 supports special Labels. Due to space constraints on the screen, these labels are displayed in a "balloon" when the user clicks on a field:

Measuring Blocks cont. - Section 7-C

Label Files also allow a third label field to be defined for each of the normal measuring block fields. This label is displayed in a balloon when the user clicks on the field. The idea is to put "specified values" in this field:

Sample Rate: Some ECUs may not be willing to produce more than about 3.5 samples per second when running a single group, even with the most aggressive protocoltiming settings. Other ECUs may be much faster. Except on the slowest most ancient PCs, this is a limitation inherent in the firmware in the ECU, not a limitation in the VCDS software or the PC. Naturally, if two groups are being displayed simultaneously, the sample rate drops about half what it was running a single group, and 3 groups simultaneously runs at around 1/3. Sample Rate will vary from controller to controller. Some controllers (particularly AG4 transmissions and Digifant-III ECU's) use a "hybrid" data-type that requires reading a long header when changing group numbers. Viewing multiple groups still works with these data types, but the sample rate becomes extremely slow. If you see "Reading Header" all the time under the Sample Rate display, you'll know you've got one of these.

In Engine controllers using KWP-2000 or CAN, there is a [Turbo] button in the top right of the Measuring Blocks screen when using a HEX Interface. Pressing this button can significantly speed up sampling, for example over 30 samples per second when logging a single group in our Touareg. Once you have pressed [Turbo] you will remain in this HighSpeed mode until you exit the Measuring Blocks screen:

The [Graph] button is used to open up VC-Scope, a plug-in for VCDS that allows you to graph Measuring Group Information. See Section 32 for information on VC-Scope.

Use [Done, Go Back] to return to the Open Controller screen.

Measuring Blocks cont. - Section 7-D

If you'd like to record just a snapshot in time of the current readings in each group, click on

[Add to Log]. This will save the results to your PC, typically in your VCDS\Logs directory

Acceleration Measurement

When you have one or more measuring group with speed (km/h) in it, clicking on [Acceleration] will bring up the Acceleration Measurement window, which allows you to enter start and stop speeds and distances. This is described in the Acceleration Measurement (Section 14 of this manual).

Advanced Measuring Values

You may also want to try the Advanced Measuring Values function (see section 13), which frees you from the grouping format of the Measuring Blocks function. For controllers using the UDS/ODX/ASAM protocol, the Measuring Blocks function is not available and you MUST use Advanced Measuring Values instead.

Warning! If you wish to observe real-time data while driving the car, please use a second person! Let one drive while the other observes the data, making sure the person holding the PC is not in front of an active airbag!

VCDS - Data Logging - Section 8-A

You can log the data from the Measuring Blocks screen to a .CSV file. These files can be opened and analyzed with Excel or other spreadsheet applications or played back using VC-Scope (see Section 32 of this manual).

Export RPM Only when checked will record only RPM from the first field and will not record other fields. Also, this will only record RPM values that are non-zero. This feature can be useful if you are logging to output the file to a spreadsheet or other third party software

While the Log Dialog is open, [Start], [Stop], and [Resume] can all be done with the same button. [Start] begins saving the data to a log file.

[Stop] discontinues the saving of data to a log file

[Resume] continues the saving of data to a log file.

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Ross-Tech VCDS User guide

Specifications and Main Features

Frequently Asked Questions

User Manual