S/X: car 'belly-flopped' (air suspension), how to safely raise it
Contents
Summary
If the air suspension has deflated and the car sits low, you cannot tow it "head-on": you can damage the bumper or battery. Raise the system first and only then move it.
What to do
- Enable Jack Mode (Controls → Service → Jack Mode, with the brake pedal pressed; Towing is a separate item) so the air suspension does not try to auto-level.
- Check 12 V: at low voltage the air suspension blocks won't wake up.
- External compressor to the service port of the air suspension/reservoir block (see the manual for your model/year): apply moderate pressure and wait for the struts to rise. Tesla's official procedure is dry nitrogen at ~10 bar only, via Toolbox/Service Mode; shop air is explicitly prohibited (moisture/contamination kill the valve block). A household compressor is only an emergency option at your own risk.
- If the port is unavailable, raise each strut in turn through the circuit (per the manual).
- After raising, set ride height to Very High, install spacers/ramps and carefully move the car.
⚠️ Don't lift the car with a jack without jack pads (battery protection). Don't overheat the strut valves with prolonged air supply.
After
- Diagnostics for leaks (soapy solution on fittings/air lines).
- Check height sensors and air suspension block errors.
- If it sags again, look for the weak point: strut/valve/compressor block/dryer.
Links
- Service Manual (Model S): Air Suspension > Air Spring Module/Reservoir and Compressor.
- Service Manual (Model X): similar procedures.
- Owner discussion (TFF-Forum, German): air suspension lowers itself when parked; a loaded S caught a curb.
https://tff-forum.de/t/automatisches-absenken-beim-parken-verhindern/29681
Sources
- https://tff-forum.de/t/automatisches-absenken-beim-parken-verhindern/29681
- https://www.tesms.org/jacking_and_lifting-2649.html
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