Continental Automotive 5WK50079, 5WK50073 User Manual

IC:7812D

5WK50073

FCC ID:KR55WK50073

IC:7812D

5WK50079

FCC ID:KR55WK50079

Continental Automotive GmbH

User Manual / Functional

Description

of the

Continental

RF Transmitter

Global A Flap Key

Type

5WK50079

5WK50073

IC:7812D

5WK50073

FCC ID:KR55WK50073

IC:7812D

5WK50079

FCC ID:KR55WK50079

Continental Automotive GmbH

General System Description

The RF

remote control system is a subsystem of a Body Computer Module

(BCM) for an aut

omotive carline.

It consists out of a tuning free RF

transmitter in the key and the receiver

module, which is directly connected to BCM control unit.

General description RF transmitter

The RF Transmitter is contained within the head of the vehicle key. I

t contains

a microprocessor controlled RF transmitter for sending commands to the RF

receiver to remotely control certain vehicle functions, including Lock, Unlock,

Trunk, Panic and Remote Start. The RF receiver then sends received

messages to the BCM to a

ctivate functions directly or by sending a GMLAN

message.

The RF transmitter also communicates with the immobilizer base station via a

LF inductive link to authorize the vehicle to start. The transmitter contains a

unique ID code and a vehicle password tha

t is used in a mutual

authentication process with the base station. A successful mutual

authentication is required before the vehicle engine is allowed to be started.

The transmitters will have different buttons (2, 3, 4 or 5) and different

frequencies. Th

e 2 and 3 buttons versions are depopulated versions of the 4

button transmitter. The 5 button design is a same layout like the 4 button

transmitter but one micro switch is located at different positions.

The Vehicle Key Electronics shall provide the follo

wing functions:

1. Secure GM RF Link

-the Vehicle Key Electronics shall provide for a secure

RF data link between customer

carried transmitters and the RF receiver. This

link shall be uniquely keyed to individual physical transmitter units, providing

both

fixed and rolling codes.

2. Low Battery Monitoring and Communication

-the Vehicle Key Electronics

shall provide the capability of determining that its battery has reached near its

end of useful life.

3. Replaceable battery

-the Vehicle Key, including th

e Key Electronics, shall

support use of a replaceable CR2032 battery, with continued safe operation

after completion of battery replacement by the operator.

IC:7812D

5WK50073

FCC ID:KR55WK50073

IC:7812D

5WK50079

FCC ID:KR55WK50079

Continental Automotive GmbH

Buttons

The action is performed until:

the button that triggered the test mode is pressed a

gain-timeout is reached (250ms)

other button is pressed, in which case the action shall be stopped and

the corresponding action for the new button shall be started)

ButtonName

(RKEfunction)

Switch

PCF7941

input

testpoint

RKEcommand byte

Panic

S021

P10

P021

0x02

Trunk2

S022

P12

P022

0x01

Lock

S023

P11

P023

0x04

EngineStart

S024

P22

P024

0x10

Trunk1

S025

P21

P025

0x01

Unlock

S026

P13

P026

0x08

GM GLOBAL A Switch Description

Transmitter Variants

Frequenc

Switch number

Serial

Number

of button

433,92

314,90

S021

S022

S023

S024

S025

S026

5WK5 0073

5XXXXXX

5WK5 0074

4XXXXX5WK5 0075

3XXXX

5WK5 0076

2XXX5WK5 0079

5XXXXXX

5WK5 0080

4XXXXX5WK5 0081

3XXXX

5WK5 0082

2XXX5WK5 0157

3XXXX

5WK5 0158

3XXXX

5WY64000

4XXXX

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