C0355
Load Leveling System Malfunction
2001-2003 BMW 525iT E39 2.5L I6 🇨🇦
Moderate SeverityChassis
Description
Fault in the automatic load-leveling suspension system that maintains ride height under varying loads.
Symptoms
- Rear sagging under load
- Compressor running excessively
- Ride height warning
- Vehicle nose-up attitude when loaded
Common Causes
- Air spring leak
- Compressor worn
- Height sensor fault
- Leveling valve stuck on mechanical systems
Diagnostic Steps
- Check ride height at all four corners
- Inspect rear air springs for leaks
- Test compressor output
- Check height sensor operation
- Inspect leveling valve on mechanically leveled vehicles
Repair Notes
Repair leaks and replace worn components. Adjust leveling sensor linkage if needed.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0355 on Other Vehicles
Common Questions
What does code C0355 mean on a 2001-2003 BMW 525iT E39?
C0355 stands for "Load Leveling System Malfunction". Fault in the automatic load-leveling suspension system that maintains ride height under varying loads.
What are the symptoms of C0355 on a BMW 525iT E39?
Common symptoms of C0355 include: Rear sagging under load, Compressor running excessively, Ride height warning, Vehicle nose-up attitude when loaded.
What causes C0355 on a 2001-2003 BMW 525iT E39?
Common causes of C0355 include: Air spring leak, Compressor worn, Height sensor fault, Leveling valve stuck on mechanical systems.