Chassis
generic / SAE
C0317
Compressor Relay Circuit
The air suspension control module has detected a circuit fault on the compressor relay output — typically open circuit, short to ground or short to power. Self-levelling is disabled and the vehicle may sit lower than normal.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number3 / 17
Possible causes
- Compressor relay failed (stuck or open) high
- Compressor motor shorted, dragging supply down medium
- Relay wiring or connector fault low
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–700 €
- Estimated time: 0.5–3 h
- Component: compressor relay
- Component: air compressor
- Component: air suspension module
- Component: relay wiring
Sources
References
sae:J2012