Melanie Reiff
Updated on Nov 16, 2022
The coolant level sensor informs the driver if the engine’s coolant levels are low. If the sensor is malfunctioning, you won’t know when it’s time to replace your coolant, leading to engine overheating and other issues.
Don’t wait for the issue to get worse—replace your coolant level sensor as soon as possible to avoid costly repairs.
Read this guide by car insurance broker Jerry to learn everything you need to know about a coolant level sensor replacement.
The exact cost varies between different Bentley models. For example, newer vehicle models are usually made with more expensive materials, so recent or high-end models will cost more, especially if your service requires a part replacement. Use the table below to estimate the cost for your own vehicle.
CarTotal Cost EstimateParts CostLabor CostAverage Dealer PriceEstimated Service Duration

What is a coolant level sensor?

The coolant level sensor, as its name suggests, keeps track of the coolant level in the engine. When working properly, the coolant level sensor informs the driver when their coolant level is too low, which can prevent overheating and engine damage.
The coolant sensor will set off some form of “Check Coolant” warning or symbol when your coolant level is too low.
The sensor usually either floats in the coolant reservoir or is positioned under the coolant reservoir’s cap.

When do I need to replace my coolant level sensor?

Knowing when to replace the coolant level sensor can be tricky since a broken coolant sensor won’t be able to tell you something is wrong.
The two indicators the coolant level sensor isn’t working are:
  • The warning light is on even if the reservoir is full of coolant
  • The warning light is not going off even when coolant levels are too low
You’ll want to get your coolant level sensor repaired as soon as possible. Low coolant can cause engine overheating and other problems. This can lead to much costlier repairs down the road.

How to replace a coolant level sensor

Here’s how a mechanic will replace your malfunctioning coolant level sensor:
  • The coolant reservoir is opened
  • The coolant reservoir will be drained to below the level of the sensor
  • The electrical connection is removed and the coolant level sensor is removed
  • A new sensor is installed and the coolant is replaced
Once the new sensor is installed, the car will be run to test that everything is working properly.

How to find cheap car insurance

Once you’ve replaced your coolant level sensor, consider replacing your car insurance policy too!
Using the insurance brokerage app Jerry is an easy way to find great insurance coverage at an affordable price. Just download the app and go through a fast, free sign-up process to gain access to dozens of competitive car insurance quotes. Use these quotes, along with Jerry’s personalized recommendations, to find a new insurance policy.
Once you’ve made your pick, Jerry helps with all the paperwork associated with signing up, switching over, and canceling an old policy.
Join now and see why the average Jerry user saves almost $900 a year!
Keep in mind that your location is another factor that determines the final cost of repairs. Areas with higher cost of living will usually have more expensive car repair services, especially if there’s less local competition. Check out the table below for an estimate of what Bentley drivers pay in different cities.
CityCarTotal Cost EstimateParts CostLabor CostAverage Dealer PriceEstimated Service Duration
Jerry doesn’t just offer fair price repair estimates for Bentley drivers! Our team of writers has collected everything you need to know for every car. Here’s how much the repair costs for some popular cars:
CarTotal Cost EstimateParts CostLabor CostAverage Dealer PriceEstimated Service Duration
The cost of repairs might vary depending on which Bentley you drive, but there’s an easy way to save money for the services you need! Just download the Jerry app for help lowering your insurance premiums. In less than 45 seconds, Jerry collects all of your information from your existing insurer. Choose from competitive quotes from top insurance companies and Jerry takes care of the rest—securing your new policy and helping you cancel your old one upon request.
With an average annual savings of $887, Jerry can help you free up funds for the repairs your Bentley’s needs.
The content contained in this article is for informational purposes only and should not be used in lieu of seeking professional advice. We encourage you to consult with a certified technician or mechanic if you have specific questions or concerns relating to any of the topics covered herein. Under no circumstances will we be liable for any loss or damage caused by your reliance on any content.