Symptoms
- Air suspension warning light or message on the dashboard
- Vehicle sits noticeably lower than normal
- Ride feels harsher or bouncier than usual
Likely causes
- CommonAir leak in a spring, line, or fittingAir suspension systems rely on sealed air springs and lines; any leak drops pressure and triggers a warning.
- CommonFailing air compressorThe compressor that maintains system pressure can wear out over time, especially in older vehicles.
- PossibleFaulty height sensorA sensor reporting incorrect ride height can trigger the warning even without an actual leak.
What to do
- Note whether the vehicle looks visibly lower on one or more corners.
- Listen for a hissing sound near the air springs or lines when the vehicle is parked and the system is running.
- Avoid driving long distances if the system has fully deflated on one corner, since it can affect handling.
- Have a shop scan the system for stored fault codes to identify whether it's a leak, sensor, or compressor issue.
- Have the specific faulty component repaired or replaced based on the diagnosis.
Tools and parts
Air suspension air spring or compressorSearch: “air suspension parts for [your car model]”
When to call a pro
Air suspension diagnosis requires a scan tool and specific system knowledge, so this is best handled at a shop familiar with your vehicle's system.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.