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As a proud Range Rover owner for many years, I have experienced my fair share of reliability issues with this luxurious vehicle. One of the many problems I have encountered is the interior lights not shutting off.
It is quite frustrating to come back to a car with a dead battery due to the lights being left on all night! So, if you’re dealing with the same issue, let’s dive in and fix it together.
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 this issue, you’ll notice that the interior lights simply won’t turn off, even when you close the doors, turn off the ignition, or hit the “Override” button.
This not only drains your battery, but it can also be quite an annoyance if you’re driving late at night.
List of possible OBD codes
When it comes to Range Rover interior lights not shutting off, you might encounter different OBD codes, which include:
- B2496 – Door switch for the driver or front passenger
- B2497 – Door switch for the rear left
- B2498 – Door switch for the rear right
- U0122 – Lost communication with vehicle Dynamics Control Module
The causes of interior lights that refuse to turn off could vary.
Here are some of the most common reasons:
- Door switch failure: The door switches can fail, resulting in the vehicle thinking that one or more doors are open, even when they’re closed.
- Failed latch: This can also signal the door is open, even when it’s closed.
- Failed relay: The relay controlling the interior lights may fail, causing them to stay on.
- Malfunctioning multi-function unit (MFU): The MFU controls the locking and unlocking signals that turn the lights on and off. When it’s faulty, it can cause these lights not to turn off.
- Stuck override button: On some Range Rover models, there’s an override button that can keep the interior lights on. If it gets stuck, it can cause the lights not to turn off.
Can it be fixed without a mechanic?
If the cause of the issue is minor, such as a faulty door switch or failed latch, then it is possible to fix it without a mechanic.
However, if the problem turns out to be more complex, such as a malfunctioning multi-function unit, it’s better to seek the assistance of a certified mechanic.
Parts you’ll need to fix it
Here are some of the parts that you might need to fix the issue:
- Replacement door switches
- Replacement latch
- Replacement relay
- Replacement multi-function unit
- Replacement override button
Tools you’ll need to fix it
To fix this issue, you might need the following tools:
- OBD scanner
- Replacement parts
How to fix it
If you’re ready to tackle the problem on your own, here’s how to fix it step by step:
- Use a multimeter to test the door switches. If the readings indicate that the switch is faulty, replace it.
- Perform a visual inspection of the latch. If it appears damaged, replace it.
- Check the fuses and relays that control the interior lights to see if any are faulty. Replace any that are not functioning properly.
- Test the multi-function unit by using an OBD scanner. If it’s malfunctioning, replace it.
- Inspect the override button to see if it’s stuck. If it is, carefully remove it and replace it with a new one.
Potential alternative causes
While the causes listed above are the most common, there are other possible reasons why your Range Rover’s interior lights won’t turn off.
Some of the potential alternative causes can include issues with:
- Anti-theft systems
- Light bulbs
- Wiring harnesses
Can a dead battery be caused by the interior lights not turning off?
Yes, if the lights are left on for an extended period, it can drain the battery and cause it to die.
Can I fix a stuck override button myself?
Yes, but you need to be careful not to damage anything while removing and replacing it.
Will a faulty multi-function unit cause other problems with my Range Rover?
Yes, it can cause problems with other vehicle components, such as the door locks and alarm system.
Range Rover interior lights that won’t turn off can be attributed to various causes, such as a faulty door switch, a stuck override button, or even a faulty multi-function unit.
While some causes can be fixed without needing a mechanic, others might require the expertise of a certified professional. So, if you experience this issue, perform a thorough inspection and take the necessary steps to fix it.
Last updated and verified on 4th September 2023