Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
41 00... Procedure For Vehicles With Active Pedestrian Protection After An Accident (AFGS)
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
- Turn off ignition and wait at least 2 minutes (no consumers may be switched on during this period such as e.g. interior lights, 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 REPLACING ACTUATOR (VEHICLES UP TO 09/2011) or REPLACING ACTUATOR (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 REPLACING LEFT ACTIVE ENGINE COMPARTMENT LID LOCK and 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
- Only if the hinges are faulty, replace the actuator. See REPLACING ACTUATOR (VEHICLES UP TO 09/2011) or REPLACING ACTUATOR (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.
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
