Contents: Returning the pedestrian protection…⬇ Details and components of the…⬇ Returning the pedestrian protection…⬇ Returning the locking lever to its…⬇
Caution! When working with the airbag control unit, observe the general safety rules for handling pyrotechnic airbag modules, seat belt pretensioners and battery disconnect devices.
Remove the center console cover into the driver's and front passenger's footwell. Disconnect the battery terminals. Loosen the nut in the front part of the footwell on the driver's side "3". Unlock the connector locking mechanism "5" in the front passenger's footwell. Disconnect the connector from the ECU. Disconnect the connector in the footwell in front of the front passenger seat. To do this, unlock the lock and move the lock "5" "arrow". Loosen the nuts -1, 4-. Raise the airbag control unit "2" and remove it from the studs toward the front passenger.
Note: For clarity, the front panel and the heating and air conditioning module are not shown in the illustration.
Installation
Installation in reverse order.
Note: Check that the control unit connector is securely connected and locks into place with an audible click.
Turn on the ignition. Connect the battery terminals. Follow the rules for reusing and replacing the control unit.
Note: If after installation the airbag indicator lamp "K75" signals an error, interrogate, clear and interrogate the event recorder again.
Returning the pedestrian protection system loop to its original position after activation
Danger! Observe safety regulations when handling activators. Discharge yourself of electrostatic charge before working with pyrotechnic components and before disconnecting the activation and ground wires! Electrostatic discharge can trigger the airbags. To do this, you can, for example, touch the body or the door lock pawl with your hand. After activating the pedestrian protection system, check other components and wires in the engine compartment and in the water drainage box for possible damage. Repair or replace damaged components. Replace the wiring. After the pedestrian protection system has been triggered, the airbag control unit can continue to be used. A loop that was not damaged when the pedestrian protection system was triggered can continue to be used up to 3 times by returning it to its original position. Do not use a loop that was damaged when the pedestrian protection system was triggered. Activators must be replaced after the pedestrian protection system has been triggered. A bonnet that was not damaged when the pedestrian protection system was triggered can continue to be used by returning the loop to its original position. If the hood is damaged when the pedestrian protection system is activated, it must be (depending on the extent of damage) repair or replace.
Details and components of the pedestrian protection system loop after activation
1. Middle part of the pedestrian protection system loop
2. Holes from cut rivets
3. Upper part of the pedestrian protection system loop: Secured to the bonnet. The loop is removed in the same way as on a vehicle with a non-activated pedestrian protection system.
4. Upper stop buttonhole lock lever: Press the upper stop buttonhole lock lever back to its original position by hand
5. Spacer washer - new: Replace
6. Lower part of the pedestrian protection system loop: Fastened to the side member. The loop is removed in the same way as on a vehicle with a non-activated pedestrian protection system.
7. Shear rivets - new: Replace
8. Activated activator. Removal: Disconnect the connector in the water drainage box. Unscrew the nut. The activator is installed in the same way as on a car with a non-activated pedestrian protection system. Before working with pyrotechnic units and before disconnecting the activation and ground wires, remove the electrostatic charge from yourself! An electrostatic discharge can cause the airbags to deploy. To do this, you can, for example, touch the body or the door lock pawl with your hand.
9. Nut: 9 Nm
Returning the pedestrian protection system hinges to their original position
Note: The pedestrian protection system hinges do not need to be removed to return them to their original position. The pedestrian protection system hinges must be returned to their original position on both sides of the vehicle.
Disconnect the battery terminals. Remove the activated activator. Raise the loop slightly. Press the locking lever "1" by hand in the direction of the "arrow" to its original position.
Returning the locking lever to its original position
I. Locking lever "1" in the activated position.
II. Locking lever "1" in the initial position.
Move the upper part of the loop "3" relative to the middle part "2" so that the pin "4" takes the upper position, and the holes from the cut rivets are covered. Install new shear rivets "1" and spacer washer "2" using riveting pliers, for example "VAG 1765B". Install a new activator.
Turn on ignition. Connect battery terminals. Check hood fit. Interrogate and clear airbag control unit event recorder. After replacement, the control unit must be coded and adapted.
