The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

Air Suspension Fault - 'Normal Height Only' Message on 2020 Discovery

0

Sarah K. · rep 0 · May 22, 6:30 AM · 1 replies · solved · Question

Vehicle: 2020 Land Rover Discovery HSE

Hey everyone,

I'm experiencing a persistent issue with my 2020 Land Rover Discovery HSE. For the past few days, I've been getting the 'Normal Height Only' message on the dashboard, and the vehicle won't raise or lower itself. It seems stuck at what feels like a slightly higher than normal ride height, and the ride quality has definitely deteriorated, feeling much stiffer.

I've tried restarting the car multiple times, but the message always comes back. I also tried to manually adjust the height using the controls, but nothing happens. I haven't heard any obvious hissing sounds, but I'm not sure what else to look for.

Has anyone else encountered this with their Discovery or similar Land Rover models? What could be causing this, and is there anything I can check myself before taking it to the dealership? Any advice would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

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

0

ClearTheCode admin answer:

The 'Normal Height Only' message on your 2020 Land Rover Discovery HSE typically indicates an issue with the Electronic Air Suspension (EAS) system. This system is complex, but several common culprits can trigger this warning.

Common Causes:

  1. Air Compressor Failure: The compressor is responsible for pumping air into the suspension system. Over time, it can wear out, become noisy, or fail to build sufficient pressure.
  2. Air Leaks: Leaks can occur in the air springs (bags), air lines, or valve block. Even small leaks can cause the system to struggle, leading to the warning message.
  3. Height Sensor Malfunction: The vehicle uses height sensors at each wheel to monitor and adjust ride height. A faulty sensor can send incorrect readings to the control module, causing suspension issues.
  4. Electrical Issues: Problems with wiring, fuses, or the EAS control module itself can disrupt the system's operation.

Initial Diagnostic Steps You Can Take:

  1. Check for Audible Leaks: With the engine off, listen carefully around each wheel arch and under the vehicle for any hissing sounds, which could indicate an air leak.
  2. Observe Compressor Operation: When you start the vehicle, listen for the air compressor. It should run for a short period. If it's excessively loud, constantly running, or not running at all, it could be failing.
  3. Inspect Fuses: Consult your owner's manual for the location of the air suspension system's fuses and relays. Check them for continuity and replace any blown fuses.
  4. Scan for OBD Codes: A diagnostic scan tool can pull specific fault codes related to the air suspension. Common codes include:
    • C1A20-64: Pressure sensor fault (often related to compressor or pressure line issues).
    • C1A00-51: Control module fault or general system malfunction.

When to See a Professional Shop: If the 'Normal Height Only' message persists after basic checks, or if you notice the vehicle is leaning, sagging, or completely unable to adjust its height, it's crucial to have it inspected by a qualified Land Rover specialist. They have specialized diagnostic tools (like SDD or JLR Pathfinder) to accurately pinpoint the fault, whether it's a failing compressor, a leaky air spring, a faulty valve block, or a control module issue. Driving with a compromised air suspension can affect handling and tire wear.

Menu

Help & account