U0178low severityNetwork
Lost Communication with Rain Sensor Module
on 2010 Audi Q7 3.0L TDI V6 · AWD
What this code means
Cannot communicate with the rain-sensing windshield wiper module.
Symptoms
- Auto wipers not working
- Rain sense feature disabled
- Wipers only work in manual mode
Common causes
- Rain sensor failure
- Wiring issue
- Sensor not bonded to windshield
- Fuse blown
- Windshield replacement error
Diagnostic steps
- Check rain sensor power
- Test wiring
- Verify sensor bonded to windshield properly
- Check fuse
- Inspect sensor gel pad
Repair notes
Check sensor mounting gel pad on windshield. Must be rebonded during windshield replacement.
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Other Network codes on this vehicle
00003
Control Module - Defective
01304
Radio - No Communication
01312
Powertrain Data Bus - Defective
01314
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01315
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01316
ABS Control Module - No Communication
01317
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01318
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01321
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U0001
High Speed CAN Communication Bus