The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2020 Discovery Air Suspension Fault - Stuck at Normal Height

0

Eric V. · rep 0 · May 22, 6:30 AM · 1 replies · solved · Question

Vehicle: 2020 Land Rover Discovery HSE Luxury

Hey everyone, I'm having a persistent issue with my 2020 Land Rover Discovery HSE Luxury's air suspension. Lately, I've been getting a 'Normal Height Only' message on the dash, and the vehicle just won't raise or lower. It feels like it's stuck.

I've tried restarting the car a few times, but the message keeps coming back. The ride quality also feels a bit off, stiffer than usual. I haven't heard any obvious air leaks, but it's hard to tell.

Has anyone experienced this with their Discovery? What could be causing this? I'm hoping it's not a major repair.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 6:30 AM

0

Hi Sarah, that's a common and frustrating issue with Land Rover's air suspension systems. The 'Normal Height Only' message indicates the system has detected a fault and is preventing height adjustments to maintain a safe, fixed ride height.

Here are the most common causes:

  1. Air Suspension Compressor Failure: The compressor generates air pressure for the air springs. It can wear out, become inefficient, or fail, leading to slow or no height adjustments.
  2. Air Leaks: Leaks in air lines, air springs (bags), or the valve block cause pressure loss. The compressor might run excessively, eventually failing.
  3. Height Sensor Malfunction: Faulty height sensors provide incorrect readings to the control module, preventing proper suspension adjustment.
  4. Air Suspension Control Module (ASCM) Fault: Less common, but the electronic control unit itself can malfunction, causing various suspension errors.

What to do:

  • Check Fuses: Consult your owner's manual and check fuses for the air suspension compressor and control module.
  • Listen for Leaks: Park the vehicle and listen for any hissing sounds around the wheels or under the vehicle.
  • Diagnostic Scan: Use an OBD-II scanner capable of reading Land Rover-specific codes. Common codes include:
    • C1A20: Pressure sensor fault
    • C1A36: Compressor fault
    • C1A00: Control module fault
    • C1A07: Cross-articulation sensor fault

When to see a shop: If checking fuses doesn't resolve the issue, or if you're getting persistent fault messages, it's highly recommended to take your 2020 Land Rover Discovery to a qualified Land Rover specialist or dealership. Air suspension systems are complex and require specialized tools. Driving with a faulty air suspension can lead to uneven tire wear, compromised handling, and more expensive repairs.

Menu

Help & account