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Automatic locking, function - GF80.20-P-4009LE

MODEL 221.0 /1, 216.3 as of model year 2009 /YoM 08 

Function requirements, general 

Automatic locking, general 

The vehicle is automatically locked under certain conditions.

The automatic locking function comprises the following partial functions:

Function sequence for locking, depending on vehicle speed 

CL activated depending on vehicle speed:

The EIS control unit (N73) recognizes if the limit values are exceeded by evaluating the speed signals from the instrument cluster (A1) and transmits the "Lock" command via the interior CAN (CAN B) to the:

IMPORTANT The instrument cluster transmits the speed signal to the central gateway control unit (N93) via the central CAN (CAN F).

The central gateway control unit transmits the signal to the EIS control unit via the interior CAN.

The door control units lock:

Moreover, opening of the trunk lid via the trunk lid external operation switch (S88/8) is suppressed by the rear SAM control unit.

IMPORTANT The fuel filler flap CL motor (M14/10) is not actuated.

If, after automatic locking, the vehicle is unlocked with the left interior actuation CL switch (S85/5) or right interior actuation CL switch (S85/6) it remains unlocked even at speeds above the corresponding limit value.

The vehicle is returned to the initial state when one of the doors is opened or c. 15 is switched on and off again.

If a door is opened while driving and then closed again, and the vehicle speed is above the limit for automatic locking, the door is locked again after it is closed.

Function sequence for automatic relocking 

After the vehicle is unlocked with the transmitter key (A8/1), a waiting time of 40 s starts. After expiration of this waiting time, the vehicle is locked again, if a door or the trunk lid was not opened previously.

Relock is confirmed by optical feedback

IMPORTANT The anti-theft alarm (ATA) (on vehicles with code (551) Anti-theft alarm (ATA)) is also activated by the relocking function.

REFER TO SYSTEM WIRING DIAGRAMS Electrical function schematic for central locking (CL), automatic locking Model 216 PE80.20-P-2055-97CAA
Model 221 PE80.20-P-2055-97SAA
  Component description for instrument cluster A1
Model 216.3, model 221 (except 221.095/195)		 GF54.30-P-6000LE
Model 221.095/195 GF54.30-P-6000LEH
  Component description for COMAND controller unit A40/3
With code (526) COMAND with single DVD drive (without navigation system) or with code (527) COMAND APS with single DVD drive (with navigation system)		 GF82.85-P-3136LE
With code (529) HIGH Class Japan GF82.85-P-3136LEJ
With code (530) COMAND APS USA (with navigation system) GF82.85-P-3136LEU
  Component description for rear SAM control unit with fuse and relay module N10/2 GF54.21-P-6030LE
  Component description for left door control unit N69/1
Model 216		 GF72.29-P-4124LA
  Component description for left front door control unit N69/1
Model 221		 GF72.29-P-4141LE
  Component description for right door control unit N69/2
Model 216		 GF72.29-P-4128LA
  Component description for right front door control unit N69/2
Model 221		 GF72.29-P-4142LE
  Rear door control unit, component description N69/3, N69/4
Model 221		 GF72.29-P-6020LE
  EZS control unit, component description N73 GF80.57-P-6003LE 
  Component description for central gateway control unit N93 GF54.21-P-4170LE
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