Electronic Ignition Lock Control Unit Component Description - GF80.57-P-6001LF

Model 217, 222 

Model 222 as of 01.06.2017, model 217 as of 01.12.2017, shown on model 222 

Location 

The electronic ignition lock control unit is located in the center console.

Model 222 up to 31.05.2017, model 217 up to 30.11.2017, shown on model 222.0 

Courtesy of MERCEDES-BENZ USA

Location 

The electronic ignition lock control unit is located on the right, next to the steering column.

Tasks 

The electronic ignition lock control unit has the following tasks:

• Central gateway (interface between CAN buses (controller area network) and chassis FlexRay (Flex E)) 
• Reading in of signals 
• Evaluation of input factors 
• Output of signals 
• Power supply and data exchange with the transmitter key (A8/1) (up to 31.05.2017 (model 222) and/or 30.11.2017 (model 217)) 

Central gateway (interface CAN and chassis FlexRay) 

The processor for controlling the central gateway functions also acts as an interface between the following data bus systems:

• Interior CAN (CAN B)
• Diagnostic CAN (CAN D)
• User interface CAN (CAN HMI)
• Periphery CAN (CAN PER)
• Chassis FlexRay

Reading in of signals 

The input factors are read in via the following connections:

• Direct line 
• Interior CAN 
• Diagnostic CAN 
• User interface CAN 
• Peripherals CAN 
• Chassis FlexRay 

Direct line 

The following signals are read in via direct lines:

• Terminal 30
• Circuit 30 (emergency battery supply)
• Status of left front door main catch microswitch (A85s2) in left front door lock (A85)
• KEYLESS-GO start/stop button status (S2/3) (as of 01.06.2017 (model 222) and/or 01.12.2017 (model 217))
• KEYLESS-GO wake-up line (as of 01.06.2017 (model 222) and/or 01.12.2017 (model 217))

Interior CAN 

The signals are read in by the electronic ignition lock control unit via the interior CAN.

Diagnostic CAN 

The signals are read in from the electronic ignition lock control unit via diagnostic CAN.

User interface CAN 

The signals are read in from the electronic ignition lock control unit via user interface CAN.

Peripherals CAN 

The signals are read in from the electronic ignition lock control unit via periphery CAN.

Chassis FlexRay 

The signals are read in from the electronic ignition lock control unit via chassis FlexRay.

Evaluation of input factors 

The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.

Output of signals 

Signals are output via the following lines:

• Direct line 
• Interior CAN 
• Diagnostic CAN 
• User interface CAN 
• Peripherals CAN 
• Chassis FlexRay 

Direct line 

The emergency path to shift to gear range "P" is actuated via a direct line.

Interior CAN 

The signals are transmitted to the electronic ignition lock control unit via the interior CAN.

Diagnostic CAN 

The signals are sent from the electronic ignition lock control unit via diagnostic CAN.

User interface CAN 

The signals are sent from the electronic ignition lock control unit via user interface CAN.

Peripherals CAN 

The signals are sent from the electronic ignition lock control unit via periphery CAN.

Chassis FlexRay 

The signals are sent from the electronic ignition lock control unit via chassis FlexRay.

Power supply and data exchange with the transmitter key (up to 31.05.2017 (model 222) and/or 30.11.2017 (model 217)) 

When the transmitter key is inserted into the electronic ignition lock control unit, it switches on the inductive power transmission for power supply to the transmitter key. Encrypted data is exchanged between the transmitter key and the electronic ignition lock control unit for identification of the transmitter key.

Electric wiring diagram for electronic ignition lock control unit (EZS)

PE54.21-P-2104-97SEA