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Home >> Mercedes Benz >> 2000 >> ML430 >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Anti-Theft & Central Locking System -- 163 Chassis >> Basic Knowledge >> Unlocking with remote control key, function - GF80.20-P-3006GH

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

MODEL 163 

Interlinkage 

Fig 1: Unlocking With Remote Control Key Function
G04608430

When the "Unlock vehicle" button is pressed, the remote control key  transmits a radio signal. This signal contains the code for checking the access authorization and the command to unlock the vehicle. The signal is received via the antenna on the A-pillar on the driver side by the receiver in the all-activity module (AAM) (N10)  The AAM decodes the signal and checks the authorization code  the code is valid, the vehicle is unlocked electrically  and the central locking switch (S21s10)  in the central console is released. Moreover, the interior lighting  is switched on.

Unlocking is accomplished in two stages  :

If the button of the remote control key is pressed when the vehicle was locked previously, the AAM unlocks the driver's door and tank flap  . When the "Unlock vehicle" button is pressed again, i.e. driver's door and tank flap are already unlocked, the remaining doors and tailgate  are unlocked by the AAM.

IMPORTANT After unlocking with the remote control key, the vehicle can relock automatically:

Both features are programmable with the AAM version coding.

IMPORTANT as of 1.3.98:

When the "Unlock vehicle" button is pressed twice immediately in sequence  , the AAM unlocks all  vehicle doors and the tailgate simultaneously.

When the "Unlock tailgate" button is pressed, only the tailgate is unlocked.

Confirmation with turn signal lamps (as of 12.99): 

When the vehicle is unlocked with the remote control key, all turn signal lamps flash momentarily as a confirmation.

If the hazard warning flasher is switched on, this confirmation is not given.

  Locking with remote control key, function   GF80.20-P-3005GH 
  Locking/unlocking vehicle with interior switch, function   GF80.20-P-3009GH 
  Access authorization   GF80.35-P-0002GH 
  Electric locking/unlocking, function   GF80.20-P-4017GH 
  Switching interior lights on/off automatically, function   GF82.20-P-2009GH
  Relocking, function   GF80.20-P-4012GH 
  Selfarming   GF80.50-P-2002GH 
  Remote control key with transponder task/design/function   GF80.30-P-4001GH 
  All-activity module (AAM) position/task/desig/function up to 11.99 GF54.21-P-4100GH
    as of 12.99 GF54.21-P-4100GK