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Locking with remote control key, function - GF80.20-P-3005A

MODEL 202 as of 1.6.97, 208, 210.081 /281, 210 (except 210.081 /281) as of 1.3.97 

Fig 1: Identifying Locking With Remote Control Key Components
G04635658Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

When the "lock vehicle" button is pressed the remote control key  sends a radio frequency and infrared signal to the corresponding receivers in the vehicle. These receive the signal and transfer the contents on to the electronic ignition switch (EIS) control module (N73)  via the CAN bus. The EIS checks the code for access authorization. If the check indicates that the code is valid, the EIS transmits the "lock" command to the PSE control module (combined) (A37)  via the CAN bus. The PSE control module then locks the doors pneumatically  .

In addition the interior switches, i.e. the interior switch (CL) (S6s1)  and remote trunk release switch (N71s15)  are disabled.

When the remote control key is inserted into the electronic ignition switch (EIS) control module (N73)  after locking, the interior switches  are enabled again. The central locking is then in the same state as after locking with the interior switch (CL) (S6s1). 

REFER TO BASIC KNOWLEDGE Unlocking with remote control key   GF80.20-P-3006A 
REFER TO BASIC KNOWLEDGE Locking/unlocking pneumatically   GF80.20-P-4016A 
REFER TO BASIC KNOWLEDGE Pneumatic system equipment (PSE) control module   GF80.20-P-4106A 
REFER TO BASIC KNOWLEDGE Electronic ignition switch (EIS) control module   GF80.57-P-4102A 
REFER TO BASIC KNOWLEDGE Locking/unlocking vehicle with interior switch, function   GF80.20-P-3009A 
REFER TO BASIC KNOWLEDGE Opening trunk with interior switch, function except model 208.4 (convertible) GF80.20-P-3012A 
    Model 208.4 (convertible) GF80.20-P-3012KA
REFER TO BASIC KNOWLEDGE Transmitting remote control signal   GF80.20-P-4010A 
REFER TO BASIC KNOWLEDGE Receiving remote control signal   GF80.20-P-4011A