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2018 Ram 1500 Air Suspension Not Leveling - "Service Air Suspension" Message

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Kevin B. · rep 0 · May 25, 2:29 AM · 1 replies · solved · Question

Hey everyone, I'm having some trouble with the air suspension on my 2018 Ram 1500 Laramie. Lately, it seems like the truck isn't leveling properly, especially overnight. I often find one corner sagging in the morning.

The "Service Air Suspension" message keeps popping up on my dash, and I can hear the compressor running a lot more than usual, sometimes even when the truck is off. It's getting pretty annoying and I'm worried about further damage.

Has anyone else experienced this with their Ram 1500? What was the fix? I'm hoping it's something simple and not a huge repair bill.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:29 AM

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ClearTheCode guidance (Ram · Brakes & suspension)

Summary: For 2018 Ram 1500 Air Suspension Not Leveling - "Service Air Suspension" Message, work through these steps on your 2015+ 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 some trouble with the air suspension on my 2018 Ram 1500 Laramie. Lately, it seems like the truck isn't leveling properly, especially overnight. I often find one corner sagging in the morning.

The "Service Air Suspension" message keeps popping up on my dash, and I can hear the compressor running a lot more than usual, sometimes even when the truck is off. It's getting pre…

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

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