AIRMATIC Malfunction: Diagnose & Solution Guide

Mercedes-Benz E-Class W213 dashboard showing AIRMATIC suspension malfunction message

AIRMATIC Malfunction in Mercedes-Benz E-Class W213: A Diagnostic Case Study

The AIRMATIC suspension system in the Mercedes-Benz E Class W213 is one of the features that defines the luxury driving experience. By automatically adjusting ride height and damping characteristics, it ensures optimal comfort, handling, and stability across a wide range of driving conditions.

But when the dreaded “AIRMATIC malfunction” message appears on the dashboard, it’s a clear sign that something is wrong. Ignoring this warning can lead to poor ride quality, compromised safety, and costly repairs.

In this case study, we’ll explore a real-world example of an AIRMATIC malfunction in a Mercedes-Benz E-Class W213, breaking down the diagnostic process, identifying the fault, and detailing the steps taken to restore the suspension system.

Customer Complaint

  • Vehicle: Mercedes-Benz E-Class W213
  • Issue: “AIRMATIC malfunction” warning displayed on the dashboard.

The customer expressed concern that the suspension system might fail completely, as the E-Class relies heavily on AIRMATIC to deliver the smooth ride expected of a Mercedes.

Diagnostic Process

Step 1: Complaint Verification

The first step was to confirm the issue. With the ignition on, the “AIRMATIC malfunction” message was clearly visible on the cluster.

Mercedes-Benz E-Class W213 dashboard showing AIRMATIC suspension malfunction message
Mercedes W213 AIRMATIC Malfunction Warning

Step 2: Xentry Diagnostic Scan

The vehicle was connected to Xentry Diagnostics, Mercedes-Benz’s official diagnostic tool. Several fault codes were retrieved from the N51/3 Air Body Control Unit:

  • C153213: Right front damping valve malfunction – open circuit.
  • C153313: Right front damping valve 2 malfunction – open circuit.
  • U041686: Implausible data received from the traction system control unit – incorrect signal.

These codes suggested a problem specifically affecting the right front damping valves.

Technician using Xentry diagnostic tool to scan AIRMATIC system on Mercedes W213
Mercedes Xentry Diagnostic for AIRMATIC Fault Codes

Step 3: Fault Code Analysis

  1. – C153213 & C153313 → Both highlighted open circuits in the right front damping valves. Likely causes included damaged wiring, faulty connectors, or defective valves.
  2. – U041686 → Showed implausible data coming from the traction control system. This was likely a secondary fault, triggered by the malfunctioning damping valves.
AIRMATIC Malfunction
AIRMATIC Malfunction

Step 4: Step-by-Step Diagnostic Checks

1. Voltage & Wiring Check

  • The connectors leading to the right front damping valves were tested.
  • Voltage supply was within expected range, ruling out power issues.

2. AIRMATIC Control Unit Inspection

  • Physical inspection of the control unit and connectors showed no corrosion or damage.
AIRMATIC Malfunction
AIRMATIC Malfunction

3. Resistance Check of Damping Valves

  • Resistance values were measured at the damping valves.
  • One valve showed normal resistance, but damping valve 2 recorded abnormally high resistance, confirming an internal fault.
AIRMATIC Malfunction
Close-up of Mercedes-Benz E-Class W213 faulty damping valve causing suspension malfunction
Faulty AIRMATIC Damping Valve in Mercedes W213

Resolution & Repair Process

With the diagnosis complete, the repair process was carried out:

  1. .1. Replacement of Faulty Damping Valve
    • The defective right front damping valve 2 was removed and replaced with a new OEM Mercedes-Benz part.
  2. 2. System Reset & Calibration
    • Fault codes were cleared using Xentry.
    • The AIRMATIC system was recalibrated to ensure proper function of the new valve.
  3. 3. Test Drive & Quality Check
    • After replacement, the vehicle was test driven.
    • No new fault codes appeared, and the “AIRMATIC malfunction” warning was gone.
    • Suspension operated smoothly in all modes, confirming the fix.
Mercedes-Benz E-Class W213 test driven after successful AIRMATIC malfunction repair and calibration
Mercedes-Benz W213 Road Test After AIRMATIC Repair

Symptom –> Cause –> Fix Table

SymptomPossible CauseRepair Solution
“AIRMATIC malfunction” warning on dashboardFaulty damping valve, wiring issue, or control unit errorDiagnose with Xentry, replace defective valve, recalibrate
Vehicle rides rough or bouncyFailed damping valves or strutsInspect damping system, replace faulty valve/strut
Leaning to one sideAir leak in spring or valve blockPerform leak test, replace air spring or valve block
Suspension fails to raiseCompressor fault or electrical failureReplace compressor, check relay and power supply
Frequent compressor activitySystem leak or worn valveInspect hoses, repair leaks, replace faulty components

Explore More Mercedes Suspension Issues

For a deeper dive into suspension problems such as uneven ride height, AIRMATIC malfunctions, “Stop Vehicle Too Low” warnings, and vibration faults, visit our hub: Mercedes-Benz Suspension Issues – Symptoms, Causes & Fixes. There you’ll find grouped case studies, step-by-step diagnostics, symptom, cause, fix tables, and preventive tips to keep your Mercedes riding smoothly.

Common Causes of AIRMATIC Malfunctions in the W213

  • – Damping valve failure (as in this case).
  • – Air leaks in struts, lines, or valve blocks.
  • – Faulty compressor unable to generate sufficient pressure.
  • – Sensor errors from height or pressure sensors.
  • – Control unit faults leading to communication errors.

Symptoms Owners Should Watch For

  • “AIRMATIC malfunction” message on the dashboard.
  • Car sitting too low, especially after being parked overnight.
  • Rough, bouncy, or unstable ride.
  • Suspension not responding when switching modes.
  • Compressor running constantly or making loud noises.
  • Vehicle leaning to one side.

FAQs

Q: Can I drive my Mercedes with an AIRMATIC malfunction?
A: Yes, but it’s not recommended. The suspension may be uneven or unresponsive, affecting safety and comfort.

Q: How much does it cost to repair an AIRMATIC malfunction?
A: Costs vary depending on the fault. Damping valve replacement can range from $700–$1,500, while compressor or air spring replacement may cost more.

Q: Do I need to replace both damping valves if one fails?
A: Not always, but it’s best practice to inspect both. Replacing in pairs may prevent uneven performance.

Q: How long does the AIRMATIC system last?
A: With proper maintenance, most components last 6–10 years. Regular inspections help catch leaks or faults early.

Q: What tools are needed to diagnose AIRMATIC problems?
A: Professional tools like Xentry Diagnostics are required for accurate fault code reading, live data analysis, and system calibration.

Conclusion

This case study of an AIRMATIC malfunction in the Mercedes-Benz E-Class W213 demonstrates how a systematic diagnostic approach can save time and prevent unnecessary part replacements.

By analyzing fault codes, checking voltages, and measuring resistance, the issue was traced to a defective right front damping valve. Replacing the faulty valve and recalibrating the system restored the E-Class to its smooth, comfortable ride quality.

For Mercedes owners, the lesson is clear: never ignore an AIRMATIC warning. With timely diagnosis and repair, you can maintain the safety, comfort, and prestige that make a Mercedes truly stand out.

Author

Written by Mercedes Expert
With years of hands-on experience diagnosing and repairing Mercedes-Benz systems, he brings technical depth and practical case studies to help car owners, technicians, and enthusiasts troubleshoot complex automotive issues. His work focuses on clear repair guides, OEM-level procedures, and knowledge-sharing to empower both professionals and drivers.
Last Updated: September 2025