Symptoms
- Suspension icon lit on the dash
- Car may sit unevenly or lower/higher than normal
- Ride may feel harsher or bouncier than usual
Likely causes
- CommonAir suspension leakAir springs and their lines can develop leaks over time, especially with age.
- CommonFailing air compressor (air suspension)The compressor can't maintain proper ride height if it's weak or failing.
- PossibleHeight sensor faultFeeds incorrect ride height data to the suspension computer.
- PossibleFailing electronic damper or shock moduleOn adjustable damping systems, a module can fail and default to a fixed setting.
What to do
- Look at the car from outside to see if it sits noticeably lower on one side or overall.
- Note if the ride feels unusually harsh, bouncy, or uneven compared to normal.
- Avoid heavy loads or towing until the system is checked, since it can worsen the issue.
- Have the code read at a shop that's familiar with your vehicle's suspension type.
- Have air lines, the compressor, or height sensors inspected and repaired as indicated by the scan.
- Get an alignment check afterward if the car was sitting unevenly for a while.
Tools and parts
Air suspension air spring/strutSearch: “air suspension strut for your car make and model”
When to call a pro
See a suspension specialist or dealer, since air and adjustable suspension repairs usually require specific diagnostic tools.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.