41 00... Procedure For Vehicles With Active Pedestrian Protection (AFGS) After An Accident

The AFGS system consists of the following components:

• Satellites (control unit + sensor) 
  • Sensors, inside, bumper trim, left/middle/right
  • ACSM control unit (Crash Safety Module)
• Cables and connectors 
• Engine compartment lid hinges 
  • Actuator
  • Engine compartment lid hinge
• Engine compartment lid catch 
  • Catch, engine compartment lid
  • Catch, upper section (striker)

In case of a frontal or side collision in the area of the engine compartment lid and/or the A-pillars, check the following components:

Satellites (control unit + sensor) 

• Procedure
  • Read fault memory
  • Disconnect battery and observe waiting period
  • Rectify faults
  • Reconnect battery and observe waiting period
  • Delete fault memory
  • Switch off ignition and wait at least 2 minutes (no consumers may be switched on during this period such as interior light, radio, etc.)
  • Switch on ignition.
  • Clear fault memory and if necessary rectify faults

Cables and connectors 

• Procedure
  • Check cables and connectors for damage, replace if necessary.

Procedure if AFGS was activated: 

Engine compartment lid hinges 

• Replace actuators  . See 51 23 400 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT ACTUATOR (ACTIVE PEDESTRIAN PROTECTION), VEHICLES UP TO 09/2011  or 51 23 400 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT ACTUATOR (ACTIVE PEDESTRIAN PROTECTION), VEHICLES FROM 09/2011 
• CHECK BOTH HINGES OF THE ENGINE COMPARTMENT LID AND REPLACE IF NECESSARY 
• Vehicles from 09/2011:

  If hinges are OK, repair hinges with REPAIR KIT .

Engine compartment lid catch 

• Replace both engine compartment lid catches  . See 51 23 101 REMOVING AND INSTALLING/REPLACING LEFT ACTIVE ENGINE COMPARTMENT LID LOCK or 51 23 111 REMOVING AND INSTALLING/REPLACING RIGHT ACTIVE ENGINE COMPARTMENT LID LOCK
• Check the top sections of the catch and replace if necessary.

Procedure if AFGS was not activated: 

Engine compartment lid hinges 

• Check BOTH HINGES OF THE ENGINE COMPARTMENT LID  and replace if necessary
• In case the hinge is faulty, replace actuator  . See 51 23 400 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT ACTUATOR (ACTIVE PEDESTRIAN PROTECTION), VEHICLES UP TO 09/2011  or 51 23 400 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT ACTUATOR (ACTIVE PEDESTRIAN PROTECTION), VEHICLES FROM 09/2011 .

Engine compartment lid catch 

• Check BOTH ENGINE COMPARTMENT LID CATCHES  and replace if necessary.
• Check the top section of the catch and replace if necessary.