The “coolant level low” warning on your Range rover is one of the most common problems with this vehicle whether you have the Range Rover Sport, Evoque, Vogue, or Velar.
Fortunately, I had a lot of these vehicles in my workshop with the same issue and this article I am going to share what the main cause is and how to fix this coolant level low fault on your Range rover.
What Does Range Rover Coolant Level Low Mean?
In simple terms, this message means that the coolant level in your Range Rover is low.
The way this works is your Range Rover coolant reservoir (expansion tank) has a sensor called “Coolant Level Sensor” which sends a signal to your Range Rover’s ECU (Electronic Control Unit) when the coolant level drops below a certain point.
From my experience, in most cases, this message is not caused by a low coolant level itself but by a bad sensor.
Now, let’s look at the main causes of the “Coolant level low” on a Range Rover
What Causes the “Coolant Level Low” On a Range Rover?
There are a lot of things that could cause a coolant warning on a range rover, here are the most common ones based on my experience as a mechanic.
1. Faulty Coolant Level Sensor:
The number one cause for a coolant level low fault message on your Range rover is a fault coolant level sensor.
This sensor is responsible for monitoring the coolant level in the system and sending a signal to the ECU to indicate when the coolant is low.
If this sensor fails, it will send the wrong signal to ECU which causes it to think that there is not enough coolant in your engine when there’s actually plenty.
Unfortunately, this is very common with range rovers, the sensor itself is known to fail way earlier than you would expect.
The sensor is located at the bottom of the coolant reservoir, so it is very easy to check.
If you have a coolant level low message on your Range Rover and the coolant is not low, then this may be your problem.
The fix for this is simple, just replace the sensor but I recommend changing the whole coolant reservoir since it is relatively affordable (you can get one at the dealer for anywhere between £30($37) – £50 ($61) and comes with a new sensor.
2. Low Coolant Level:
This one is pretty straightforward, all you need to do is open the bonnet (hood) and check the coolant level. If it is low, top it off with the correct amount of coolant (Above the minimum mark but below the maximum mark).
This one should be obvious but some people tend to forget about it when trying to diagnose an issue with their Range Rover
3. Leaking Coolant Reservoir:
Another common cause from my experience is a leaking coolant reservoir.
This often happens if you overfill your Range Rover and drive off without noticing that some of the excess coolant has leaked out.
The easiest way to diagnose this issue is just to check the level of coolant in the bottle and then check underneath the vehicle for any signs of leakage.
How to Fix Low Coolant Level on a Range Rover
First things first, check the coolant level if it is below the minimum mark then top it off with the correct coolant type for your range rover (Range rover recommends OAT Coolant).
If you check the Coolant bottle and the coolant is where it should be then you will need to replace the whole coolant reservoir (expansion tank) since this might be caused by a damaged sensor or a cracked bottle.
You can get a new coolant reservoir at the nearest Landrover dealership. Here is a video on how to replace the Expansion tank