C0305low severityChassis
Suspension Control Mode Switch Circuit
on 2002 BMW 540iT E39 4.4L V8 M62 Touring · RWD
What this code means
Malfunction in the driver-selectable suspension mode switch (comfort/sport/auto).
Symptoms
- Suspension mode cannot be changed
- Stuck in one mode
- Switch indicator not illuminating
- Warning light on
Common causes
- Faulty mode switch
- Switch connector corroded
- Wiring damage
- Module input failure
Diagnostic steps
- Test switch resistance in each position
- Check switch connector
- Inspect wiring
- Monitor switch input at module with scan tool
Repair notes
Replace suspension mode switch.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic