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Unlocking vehicle with remote control key, function - GF80.20-P-3006A

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

Fig 1: Identifying Unlocking Vehicle With Remote Control Key Components
G04635659Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Remote control key set to "selective unlocking"  When the "unlock 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 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 transfers the command for pneumatic unlocking to the PSE control module (combined) (A37)  via the CAN bus.

If the vehicle was locked previously the PSE performs selective unlocking, i.e. it unlocks only the driver's door and tank flap.

If the driver's door and tank flap are already unlocked and another request to unlock is received, the PSE then performs global unlocking so that all of the remaining locking points are also unlocked.

Remote control key set to "global unlocking" 

When the "unlock vehicle" button is pressed the remote control key  sends the radio frequency and IR signals to the corresponding receiver in the vehicle twice immediately after one another. The result is the same as if the "unlock" button was pressed twice with the remote control key set to "selective unlocking".

Following global and selective unlocking with the remote control key the interior switches  are released.

REFER TO BASIC KNOWLEDGE Pneumatic locking/unlocking   GF80.20-P-4016A 
REFER TO BASIC KNOWLEDGE Locking with remote control key   GF80.20-P-3005A 
REFER TO BASIC KNOWLEDGE Relocking   GF80.20-P-4012A 
REFER TO BASIC KNOWLEDGE Emergency opening   GF80.20-P-4013A 
REFER TO BASIC KNOWLEDGE Automatic locking   GF80.20-P-4009A 
REFER TO BASIC KNOWLEDGE Locking/unlocking vehicle with interior switch, function   GF80.20-P-3009A 
REFER TO BASIC KNOWLEDGE Opening trunk lid 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 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 Transmitting remote control signal   GF80.20-P-4010A 
REFER TO BASIC KNOWLEDGE Receiving remote control signal   GF80.20-P-4011A