Continental Automotive GmbH
General System Description
remote control system is a subsystem of a Body Computer Module
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
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
ctivate functions directly or by sending a GMLAN
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
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
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
he 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
2. Low Battery Monitoring and Communication
he Vehicle Key Electronics
shall provide the capability of determining that its battery has reached near its
he Vehicle Key, including th
support use of a replaceable CR2032 battery, with continued safe operation
after completion of battery replacement by the operator.
