Range Rover height sensor problems: causes and how to fix

Ah, the height sensor. Whoever thought it would be a good idea to fit this masterpiece of sensor technology should be fired. When that warning flashes, you know you’re in for a fun few days (and that’s assuming everything goes well).

The height sensor is responsible for monitoring the ride height of the vehicle. It is an essential part of the suspension system and ensures that the car maintains a consistent ride height at all times.

When the height sensor fails, it can cause a host of problems. If you’re dealing with this all-too-common problem, read on for what to do.

What models are affected?

• Land Rover Defender
• Range Rover Discovery
• Range Rover Evoque
• Range Rover Sport
• Range Rover Velar
• Range Rover Vogue

Signs and symptoms

If you are experiencing issues with your Range Rover height sensor, you may notice a few signs and symptoms.

The most common include:

• Warning message on the dashboard: This is the most obvious sign of a problem with the height sensor. You may see a message that says “Suspension Fault – Normal Height Only” or “Suspension Fault – Vehicle Resting Only.”
• Uneven ride height: The car may appear to be tilted to one side or the other. In severe cases, the car may sit low on one side.
• Rough ride: The car may experience a bumpy ride and feel unstable on the road.
• Difficulty getting into the car: The ride height may be too high, making it difficult to get in and out of the car.

List of possible OBD codes

If you perform a diagnostic scan on your Range Rover, you may see one of the following OBD codes:

• C1A20 – Left Front Height Sensor Circuit Range/Performance
• C1A21 – Right Front Height Sensor Circuit Range/Performance
• C1A22 – Left Rear Height Sensor Circuit Range/Performance
• C1A23 – Right Rear Height Sensor Circuit Range/Performance

Buying guide: Best Land Rover OBD2 scanner tools

Common causes

Several factors can cause issues with the Range Rover’s height sensor.

These include:

• Wear and tear: The sensor is subject to wear and tear over time, especially in off-road conditions.
• Corrosion: The sensor can become corroded due to exposure to dirt, water, and other elements.
• Electrical Issues: Electrical issues, such as a blown fuse or wiring problems, can cause the sensor to malfunction.
• Failed air suspension compressor: This can cause the car to ride low, which can result in issues with the height sensor.

Can it be fixed without a mechanic?

If you are very handy with cars, fixing the Range Rover’s height sensor is possible without a mechanic. But it’s not something I’d try without adequate experience and tooling.

If you are not confident in your abilities, it is best to seek professional help. You’ll thank me later.

Parts you’ll need to fix it

To fix the Range Rover’s height sensor, you will need the following parts:

• Range Rover Height Sensor
• Corrosion-resistant mounting bracket
• New sensor bolts
• Rubber grommets

Tools you’ll need to fix it

The following tools will be needed to fix your Range Rover’s height sensor:

• Metric socket set
• Torque wrench
• Wire cutters/strippers
• Heat gun
• Soldering iron and solder
• Multimeter
• Diagnostic tool

How to fix it

Follow these steps to fix your Range Rover’s height sensor:

Step 1: Remove the old height sensor

• Disconnect the battery to avoid any electrical shorts.
• Locate the height sensor. It is usually located in the rear of the vehicle.
• Remove the sensor from the bracket by removing the bolts that hold it in place.
• Disconnect the wiring harness from the sensor.

Step 2: Clean the sensor area

• Use a heat gun to heat the area around the sensor to loosen any dirt or grime.
• Use wire cutters to remove any corroded wiring or cables.
• Clean the area around the sensor with a cloth and a small amount of rubbing alcohol.

Step 3: Install the new height sensor

• Insert the new sensor into the bracket and secure it in place using the new sensor bolts.
• Attach the wiring harness to the new sensor.
• Reconnect the battery.

Step 4: Calibrate the suspension

• Start the vehicle and let the suspension system recalibrate itself. This may take a few minutes.
• Check the ride height and adjust as necessary using a diagnostic tool.

Potential alternative causes

There are several other factors that can cause issues with the Range Rover’s height sensor. These include:

• Failed air suspension compressor: This can cause the car to ride low, which can result in issues with the height sensor.
• Damaged suspension components: Damaged shocks, struts, or other suspension components can cause issues with the height sensor.
• Corroded wiring: Corroded wiring or connections can cause electrical issues with the height sensor.

FAQs

Summary

Range Rover height sensor problems can be frustrating, but they can be fixed with the right tools and some know-how.

If you encounter issues with your car’s height sensor, follow the steps outlined in this article to fix the issue and get your car back on the road.