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.
Anti-block device for wiper motor, function - GF82.30-P-4008PP
MODELS 203.0/ 2/ 7
Lock-up recognition
Lockup of the wiper motor (M6/1) is detected by the front SAM control unit with fuse and relay module (N10/1) via the absence of cam switch signals
Lockup protection for function, wiping in stage 2
If the signal from the cam switch is missing for longer than 4 seconds, the front SAM control unit with fuse and relay module (N10/1) switches the wiper motor (M6/1) back to stage 1.
If the signal does not appear for a further 8 seconds, the front SAM control unit with fuse and relay module (N10/1) switches the wiper motor (M6/1) off.
If though during this 8 seconds a signal is received from the cam switch, the wiper motor (M6/1) is switched on again to stage 2.
Lockup protection for one-touch wiping, intermittent wiping, washing and stage 1 wiping functions
With these functions the front SAM control unit with fuse and relay module (N10/1) switches the wiper motor (M6/1) off if no cam switch signals are received for longer than 12 seconds.
In all cases, the lock-up protection is discontinued when the relevant function is requested again by pressing the combination switch (S4) or circuit 15R is switched on again.
If the wiper motor (M6/1) locks up again after discontinuation of the lock-up protection feature, it is switched off again as described above.
| Wiper motor, location/task/design/function | GF82.30-P-4104PP | ||
| Front SAM control unit with fuse and relay module location/task/design | GF54.21-P-4108PP |
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.