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2018 S560 Airmatic Malfunction - Car Sagging & Warning Message

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Chris P. · rep 0 · May 22, 4:15 AM · 1 replies · solved · Question

Vehicle: 2018 Mercedes-Benz S560

Hey everyone,

My 2018 Mercedes-Benz S560 has been acting up lately. The air suspension feels really off, especially on the passenger side front, which seems to be sagging more than the rest of the car. I'm also getting a 'Malfunction' message on the dash related to the Airmatic system.

It's making the ride really uncomfortable and I'm worried about driving it too much. Has anyone experienced this with their S-Class? What could be causing it? I'm hoping it's not a super expensive fix.

Any advice or similar experiences would be greatly appreciated before I take it to the dealer.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:15 AM

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ClearTheCode admin answer:

An Airmatic malfunction on a Mercedes-Benz S-Class, especially with sagging, is a common issue that typically points to a problem within the air suspension system. This system relies on air springs, a compressor, and various sensors to maintain ride height and comfort.

  1. Common Causes:

    • Leaking Air Spring/Strut: This is the most frequent culprit. Over time, the rubber components of the air springs can crack or develop leaks, causing air to escape and the vehicle to sag, often on one corner.
    • Airmatic Compressor Failure: The compressor is responsible for pumping air into the system. If it's weak or has failed, it won't be able to maintain proper pressure.
    • Valve Block Issues: The valve block directs air to individual air springs. A faulty valve block can cause uneven inflation or deflation.
    • Sensor Malfunction: Ride height sensors or pressure sensors can send incorrect data to the control unit, leading to incorrect ride height adjustments. Common OBD codes might include C1525 (Airmatic pressure sensor fault) or C1533 (Airmatic system pressure too low).

  2. When to See a Shop:

    • Immediately: If the vehicle is significantly sagging, especially to the point where tires might rub, or if the 'Malfunction' message persists, it's crucial to have it inspected by a qualified Mercedes-Benz specialist. Driving with a compromised air suspension can lead to further damage to other suspension components, tires, and potentially affect vehicle handling and safety.
    • Diagnostics: A shop will use specialized diagnostic tools to read fault codes and perform system tests to pinpoint the exact component failure. They can also visually inspect the air springs for leaks using soapy water.

Addressing this promptly will help prevent more extensive and costly repairs down the line.

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