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2018 E300 Air Suspension Malfunction - Rear Sagging Overnight

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Ryan M. · rep 0 · May 22, 4:14 AM · 1 replies · solved · Question

Hey everyone, I'm having a really frustrating issue with my 2018 Mercedes-Benz E300 (W213 chassis). Lately, the rear of the car seems to be sagging significantly, especially after it's been parked overnight or for several hours. When I start it up, I sometimes get a 'Malfunction' message on the dash related to the air suspension, though it usually clears after a few minutes of driving as the car levels out.

It's concerning because the ride quality feels a bit off, and I'm worried about potential damage if I keep driving it like this. The car has about 65,000 miles on it. Has anyone experienced this with their E-Class? What could be causing this intermittent sagging and the malfunction warning? Any advice on what to check first would be greatly appreciated.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:14 AM

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ClearTheCode guidance (Mercedes-Benz · Brakes & suspension)

Summary: For 2018 E300 Air Suspension Malfunction - Rear Sagging Overnight, work through these steps on your 2016+ vehicle:

  1. Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
  2. Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
  3. Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
  4. Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
  5. Test the common fix — follow model-specific service procedures; one change at a time.
  6. Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.

Owner reported: Hey everyone, I'm having a really frustrating issue with my 2018 Mercedes-Benz E300 (W213 chassis). Lately, the rear of the car seems to be sagging significantly, especially after it's been parked overnight or for several hours. When I start it up, I sometimes get a 'Malfunction' message on the dash related to the air suspension, though it usually clears after a few minutes of driving as the car l…

This is educational guidance, not a substitute for hands-on diagnosis.

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