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.
51 23... Adjusting/replacing bump stops
The illustrations are schematic representations and are to be applied to the relevant vehicle type.
Version 1:
Following parts must not be damaged:
- (1) Bump stop
Adjust bump stop (1) to correct height by turning left or right.
Version 2:
Replace damaged bump stops (refer to EPC):
- (1) Bump stop with ejector
Press ejector (1) into bump stop and, in this position, twist approx. 90° counterclockwise with a Phillips screwdriver.
This locks the ejectors (1) in the bump stops.
Adjust bump stop (2) to correct height by turning left or right.
Unlock the ejector (1) again after completing adjustment.
Version 3:
Replace damaged bump stops (refer to EPC):
- (1) Bump stop
Turn lock (1) 45° counterclockwise.
Pull bump stop (2) upwards.
Close lid slowly until it is at the same height as the side panel.
Open lid and turn lock (1) clockwise.
Installation:
Press bump stop into panel and drive in expanding pins (3).
The graphics are schematic representations and are to be applied to the relevant vehicle type.
Prerequisite: Lid must be correctly adjusted.
Version 1:
Following parts must not be damaged:
- (1) Bump stop
Adjust bump stop (1) to correct height by turning left or right.
Type 2:
Replace damaged bump stops (refer to EPC):
- (1) Bump stop
Adjusting version 2:
Turn lock (1) 45° anticlockwise.
Pull bump stop (2) upwards.
Close lid slowly until it is at the same height as the side wall.
Open lid and turn lock (1) clockwise.
Installation note:
Press bump stop into sheet metal part and drive in expanding pins (3).
Version 3:
Lever out expanding rivets (1).
Remove bump stop (2).
Adjusting version 3:
Checking correct adjustment:
- Insert a strip of paper (normal writing paper) between bump stop and stop on body.
- Close lid. Make sure that the paper strip remains between bump stop and stop.
- The bump stop is correctly adjusted when the paper strip can be pulled out "with slight resistance".
Adjusting procedures
Screw in bump stop until the paper strip can be easily pulled out.
Then unscrew bump stop until the paper strip cannot be pulled out any more.
Screw in bump stop until the paper strip can be pulled out "with slight resistance".
Version 4:
Lever out expanding rivets (1).
Remove bump stop (2).
Adjusting version 4:
Set bump stop to the correct height by turning to the left or right.
NO RELATED
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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.