VDO M4WL User Manual
ENGLISH
Installation video
Operating video
Settings video
www.vdocyclecomputing.com/service
Preface
Congratulations
In choosing a VDO computer, you have opted for high-quality
device with first rate technology.
To optimally use the computer, we recommend that you read
this manual carefully. It contains full operating instructions
and many useful tips.
We hope you enjoy cycling with your VDO computer.
Cycle Parts GmbH
M4 WL
Pack contents
First, please ensure that the contents of this pack are
complete:
1 VDO computer
1 battery for the computer
1 speed transmitter, battery installed
1 handlebar bracket
1 spoke magnet (clip magnet)
cable ties for attaching the bracket and
the transmitter
1 quick-start instruction manual
2
Table of contents
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Display .................................................................. 04
Buttons
Functions
Accessing the total values
Operation while cycling
Sleep mode ........................................................... 13
Attaching the handlebar bracket
Attaching the speed transmitter
Inserting the computer into the bracket
Pairing the transmitter (initial use) ........................ 17
Function testing
................................................................. 06
.............................................................. 07
..................................... 11
......................................... 13
........................... 14
............................ 15
................. 16
.................................................... 17
Setting the navigator ............................................. 40
Resetting the navigator to zero
Trip section counter
Resetting the trip section counter to zero
Resetting trip data after the trip
Recalibrating the altitude before starting................. 44
Light mode
Battery status indicator
Replacing the battery in the computer
Replacing the battery in the speed transmitter ...... 49
Terms of guarantee
............................................................ 47
.............................................. 42
............................................... 50
.............................. 41
.............. 43
............................ 43
.......................................... 48
................... 48
Settings ................................................................ 18
Language ....................................................................... 18
Unit ............................................................................... 20
Wheel circumference ..................................................... 22
Clock ............................................................................. 26
Start altitude .................................................................. 28
Current altitude ............................................................. 29
Total distance ................................................................ 32
Total ride time ............................................................... 34
Altitude gain .................................................................. 36
Altitude loss .................................................................. 38
Troubleshooting .................................................... 51
Technical specifications ........................................ 52
3
Display
The VDO M4 WL has a large, easy-to-read display
that can be divided into four areas.
M4 WL
Area 1:
The top line of the display permanently indicates
the current altitude.
Area 2:
The next line permanently shows the current speed.
Area 3:
The middle line uses clear text to display a description
of the selected function.
Area 4:
The bottom line of the display shows the value
for the selected function.
Area 1
Area 2
Area 3
Area 4
On the right of the display, under the speed indicator,
the unit kmh or mph is displayed.
4
Display
On the left of the display, next to the speed indicator,
you will find the icons:
“ ”: the icon is ON
if the trip section counter has been started.
A more detailed description of the trip section counter can
be found on page 42.
“
” or “ ”
The VDO M4 WL can be used on two bikes.
The indicator icons 1 and 2 show whether your VDO M4 WL
is currently using the settings for bike 1 or bike 2.
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“UP/DOWN arrow”
The arrows indicate whether you are currently travelling
quicker or slower than your current average speed.
Light ON/OFF
This icon indicates whether the display backlight mode is
switched on or off.
Left/right arrows next to the description of the selected
indicator function.
In setting mode, these arrows indicate that you can scroll
by pressing the BIKE or ALTI button.
5
Buttons
M4 WL
The VDO M4 WL has three buttons.
ALTI
In function mode:
– Access the altitude functions
(scroll forwards through the functions)
– Select the start altitude, set the current altitude,
recalibrate the altitude before starting
(press and hold)
In setting mode:
– Scroll in the setting menu (backwards)
– Change the data to be set (decrease)
SET
In function mode:
– Scroll backwards through the functions
– Open the setting mode
(press and hold)
– Access the total values for distance
and ride time, altitude gain/loss
(press and hold)
In setting mode:
– Open the setting
– Confirm the setting once ready
– Exit setting mode and return to
function mode
BIKE
In function mode:
– Access the bike functions
(scroll forwards through the functions)
– Reset trip data to zero
(press and hold)
In setting mode:
– Scroll in the setting menu (forwards)
– Change the data to be set (increase)
– Exit setting mode and return to
function mode
6
Functions
The VDO M4 WL has the following functions:
Current speed
The current speed is permanently shown on the display.
With a wheel circumference of 2,155 mm, the maximum
possible speed is 199 kmh or 124 mph.
Current altitude
The current altitude is permanently shown on the display.
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BIKE button functions
The BIKE button can be used to access the following
functions:
Current distance
The current distance (distance for the current trip) counts up
to 9,999.99 km or miles. If this maximum value is exceeded,
the counter restarts the current distance count at zero.
Current ride time
The current ride time (ride time for the current trip) counts
up to 99:59:59 HH:MM:SS.
If this value is exceeded, the ride time counter restarts at
zero.
7
BIKE button functions
Average speed
for the current trip
The average speed is specified to two decimal places.
Maximum speed
for the current trip
The maximum speed is specified to two decimal places.
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Section time
The VDO M4 WL has a trip section counter.
The trip section counter is like a stopwatch.
If the trip section counter is running, the section time is
recorded, as on a stopwatch.
When the trip section counter is running,
the section distance is also recorded.
The trip section counter is started and stopped by pressing
the BIKE + SET buttons (simultaneously press and both
buttons – do NOT hold).
ATTENTION: the trip section counter stops automatically
when the speed is zero.
A detailed description of the trip section counter can be found
on page 42.
Section distance
Shows the distance travelled while the trip section counter is
activated.
8
BIKE button functions
Navigator
The navigator is a second, completely independent
trip distance counter.
The navigator is used to measure partial trip sections.
The navigator is particularly helpful when riding a route
shown in a road book.
The navigator can:
– be reset to zero as often as desired and independently
of the trip distance counter
– be preset to a specific value
– count forwards or backwards from this value
Information on how to operate the navigator can be found
on page 40.
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Temperature
The VDO M4 WL has a temperature indicator.
The temperature is displayed in increments of 0.1 degrees.
Time
The current time is displayed in 24 H or 12 H mode.
Information on how to set the time can be found on page 26.
9
ALTI button functions
Press the ALTI button to access the following altitude
information:
Current gradient uphill/downhill
Displays the gradient uphill/downhill as a percentage.
Altitude gain
Displays the altitude gain for the current trip.
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Maximum altitude
Displays the maximum altitude reached on the current trip.
The value is updated if a new, higher altitude is reached.
Average gradient uphill
Shows you the average gradient uphill for the current trip.
Maximum gradient uphill
Shows you the maximum gradient uphill you have recorded
so far on the current trip.
10
ALTI button functions
Altitude loss
Displays the altitude loss for the current trip.
Average gradient downhill
Shows you the average gradient downhill for the current trip.
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Maximum gradient downhill
Shows you the maximum gradient downhill you have
recorded so far on the current trip.
The value is updated if you ride down a steeper section
at a later point.
Accessing the total values
The total values for the distance travelled, the ride time and
the altitude data are accessed separately from the data for
the CURRENT trip.
To access the totals, press and hold the SET button until
the menu opens.
Press the SET button to open the total values screen.
Press the BIKE or ALTI button to scroll in the total values
(Totals).
The total distance 1 (sum of all individual trips with bike 1)
is displayed first.
11
Accessing the total values
Total distance 1
(Sum of all trips on bike 1)
The total distance counts up to 99,999 km or miles.
If this value is exceeded, the total distance counter restarts at
zero.
If the unit is switched from miles to km and the conversion
result is greater than 100,000 km, the total distance counter
is reset to zero.
Press the BIKE button to scroll to
total ride time.
(Sum of all trips)
The total ride time counts up to 9999:59 HHHH:MM.
If this value is exceeded, the total ride time counter restarts
at zero.
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Press the BIKE button to scroll on to
year altitude gain for bike 1
Press the BIKE button to scroll on to
year altitude loss for bike 1
If you have also used bike 2, when continuing scrolling
by pressing the BIKE button, the values for bike 2 are
also displayed here.
The total values are also found here (sum of the values
for bike 1 plus bike 2)
Press (and hold) the SET button to return from the total
values information to the normal function mode.
12
Operation while cycling
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While cycling, the display functions can be accessed by
pressing the BIKE button and the ALTI button
(scroll forwards through the functions).
Pressing the BIKE or ALTI button shows the next function
on the display.
By pressing the SET button you can also scroll backwards
through the functions. This enables you to quickly display the
desired function.
Sleep mode
SET
BIKEALTI
If you take a break and the M4 WL is in the bracket,
the computer switches to sleep mode after five minutes.
The model name VDO M4 WL and the time appear on the
display.
If you set off again after a break, the VDO M4 WL has an
auto-start function.
The VDO M4 WL instantly switches back to the function mode
and the current speed and distance are once again displayed.
13
90°
Attaching the handlebar bracket
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You can attach the computer to the right or left of
the handlebars or in the centre on the stem. Attach the
handlebar bracket in the corresponding position.
STEP 1
Decide whether you want to attach the computer to the
handlebars or the stem.
STEP 2
Rotate the foot of the handlebar bracket by 90° accordingly.
To do so, undo the screws in the bracket, remove the foot and
rotate it 90° then insert and tighten the screws again.
Attention: do not overtighten the screws.
STEP 3
Guide the cable ties through the slot in the handlebar bracket,
place around the handlebars or the stem and pull (do not pull
tight just yet).
STEP 4
For handlebar attachment: align the computer angle to
achieve optimum readability.
Now pull the cable ties tight.
Use clippers to snip off protruding ends.
1
334
2
1
4
14
Attaching the speed transmitter
The transmitter can be attached to the fork leg on the right
or left.
Note:
If you have attached the computer to the stem or the
left of the handlebars, the speed transmitter MUST be
attached to the LEFT fork leg.
STEP 1
Place the rubber shim under the transmitter. Fit the
transmitter on the same side of the forks where you later
want to fit the computer to the handlebars (right or left)
using the cable ties supplied (loosely at first, do not pull
tight just yet).
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ATTENTION: The cross-hatched marking on the lid of
the transmitter‘s battery compartment must point
toward the spokes.
Depending on the available space, the transmitter can be
mounted along the front of the fork, on the inside of the fork,
or the back of the fork.
STEP 2
Place the spoke magnet around an outside spoke. The VDO
logo of the rod-shaped magnet core should point toward the
transmitter. Align the magnet with the cross-hatched sensor
marking on the transmitter at a distance of 1- 5 mm.
STEP 3
Align the transmitter and magnet in their final positions and
fasten them in place:
pull the cable ties tight and push the magnet in firmly.
The transmitter should be folded down at a maximum angle
of 45° to the spokes. If you cannot achieve this angle, move
the transmitter down along the fork leg towards the hub until
you have reduced the angle to less than 45°.
MAGNET
90° °
✔
✘
LEFT
STEM
RIGHT
LEFT
15
Inserting the computer into the bracket
The VDO twist-click system securely connects the
computer to the handlebar bracket.
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How to insert the computer:
STEP 1
Place the computer into the bracket in a 10 o’clock position.
STEP 2
Rotate the computer to the right into the 12 o’clock position
and click it into the bracket system. A noticeable resistance
must be overcome to move it into place.
STEP 3
To remove the computer, rotate it to the left
(without pushing or pulling).
Memory aid: Rigid to the Right, Loose to the Left
LOCK
UNLOCK
. LOCK . CLICK
. UNLOCK
16
Pairing the transmitter (initial use)
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The VDO M4 WL automatically pairs the transmitter.
Once the computer has been rotated into place in the bracket,
it starts searching for the transmitter.
The transmitter search is identified by the flashing digits for:
– Speed
– Heart rate (if the heart rate option is activated)
– Cadence (if the cadence option is activated)
The VDO M4 WL has an automatic bike recognition function.
Depending on whether you are using bike 1 or bike 2,
the data is recorded for bike 1 or bike 2.
ATTENTION: When other radio signals interfere during the
pairing function, the display shows the message “Too Many
Signals”.
Confirm this message by pressing any key. You will then need
to leave this location and move to another location. Untwist
the computer from the handlbar bracket. Then reinsert the
computer into the handlebar bracket. The computer will now
attempt another pairing.
Potential source of interference:
– LED lights
– Mobile telephone
– GPS recever
– WLAN
– Anti-theft security systems inside the store
These sources can interfere with the pairing.
ATTENTION: when using the transmitter for the first time, the
bike recognition switch must be set to either BIKE 1 or BIKE 2.
Only then will the automatic bike recognition work.
Press and HOLD the button until the LED flashes.
Green flashes once = bike 1 is selected
Red flashes twice = bike 2 is selected
Function testing
Once the transmitter has been attached, check that it
functions correctly.
How to test the transmitter:
– Insert the computer into the bracket.
The speed indicator flashes. The computer now searches
for its speed transmitter.
– Lift and spin the front wheel.
The green LED on the transmitter flashes several times.
– A speed should now be displayed on the computer.
If no speed is displayed, there can be several reasons for this.
The possible reasons are described in the “Trouble-
shooting” section.
17
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