Service and Cost
Typical Cost
The cost to replace or repair a coolant level sensor can vary based on several factors, including the make and model of the vehicle, and whether you choose an original equipment manufacturer (OEM) part or an aftermarket part. Generally, here is a breakdown of the potential costs:
1. Parts Cost: - The cost of a new coolant level sensor typically ranges from $20 to $100. OEM parts tend to be on the higher end of this range, while aftermarket parts are usually more affordable.
2. Labor Cost: - Labor costs can vary significantly the complexity of the replacement. On average, you might expect to pay between $50 and $150 for labor. Some vehicles may require more time to access and replace the sensor, which can increase labor costs.
3. Total Cost: - Combining parts and labor, the total cost to replace a coolant level sensor generally falls between $70 and $250.It's important to note that these are typical cost ranges and actual prices can vary. Additionally, if the sensor is integrated into a larger component or if there are additional issues with the cooling system, costs could be higher. Always get a detailed estimate from a trusted mechanic or repair shop before proceeding with repairs.
Typical Service Procedure
When replacing or repairing a coolant level sensor in a vehicle, several steps and components are typically involved to ensure the system functions correctly. Here's a general overview of what is typically included in this process:
1. Diagnosis: Before replacement, a thorough diagnosis is performed to confirm that the coolant level sensor is faulty. This may involve checking error codes with an OBD-II scanner, inspecting the sensor for physical damage, and verifying that the coolant level is correct.
2. Preparation Ensure the engine is cool to prevent burns or other injuries. Disconnect the battery to prevent electrical shorts or shocks.
3. Draining Coolant Depending on the sensor's location, it may be necessary to partially or fully drain the coolant from the system to prevent spills and allow access to the sensor.
4. Removing the Old Sensor Locate the coolant level sensor, which is typically found in the coolant reservoir or radiator. Disconnect any electrical connectors attached to the sensor. Remove any mounting hardware or clips holding the sensor in place.
5. Inspecting Related Components Check the wiring and connectors for corrosion or damage, as these can also cause sensor malfunctions. Inspect the coolant reservoir or radiator for cracks or leaks.
6. Installing the New Sensor Install the new coolant level sensor by securing it with the appropriate hardware or clips. Reconnect the electrical connector to the sensor.
7. Refilling Coolant Refill the cooling system with the appropriate type and mixture of coolant. Bleed the system to remove any air pockets, which can cause overheating or sensor malfunctions.
8. Testing Reconnect the battery. Start the engine and allow it to reach operating temperature. Check for leaks and ensure the sensor is functioning correctly by monitoring the dashboard indicator or using diagnostic tools.
9. Final Inspection Verify that the coolant level is stable and that there are no leaks. Ensure that the dashboard warning light for the coolant level is off.
10. Documentation: Record the repair or replacement in the vehicle's maintenance log for future reference.These steps can vary slightly depending on the make and model of the vehicle, as well as the specific design of the cooling system. It's always recommended to refer to the vehicle's service manual for detailed instructions specific to the vehicle in question.

What is a Coolant Level Sensor and What Does It Do?
A coolant level sensor is a component in a vehicle's cooling system that monitors the level of coolant in the reservoir or radiator. Its primary function is to ensure that there is an adequate amount of coolant in the system to prevent the engine from overheating. The sensor typically works by using a float mechanism or electronic probes to detect the coolant level.
When the coolant level drops below a certain point, the sensor sends a signal to the vehicle's onboard computer or directly to the dashboard, triggering a warning light or message to alert the driver. This allows the driver to take corrective action, such as adding more coolant, to maintain optimal engine performance and prevent potential damage.
Signs of a bad Coolant Level Sensor
A coolant level sensor is responsible for monitoring the level of coolant in the reservoir and alerting the driver if the level drops too low. If this sensor fails, it can lead to engine overheating and potential damage. Here are some signs that the coolant level sensor might be failing:
1. Erratic or False Warnings: One of the most common signs of a failing coolant level sensor is receiving erratic or false low coolant warnings on the dashboard. If the coolant level is adequate but the warning light is illuminated, the sensor might be malfunctioning.
2. No Warning When Coolant is Low: Conversely, if the coolant level is actually low and the sensor does not trigger a warning light, it may be failing. This can be particularly dangerous as it might lead to engine overheating without any prior warning.
3. Intermittent Warning Light: If the coolant warning light turns on and off intermittently without any change in the actual coolant level, it could indicate a faulty sensor or a loose connection.
4. Corrosion or Damage: Physical inspection of the sensor might reveal corrosion, damage, or buildup of debris. This can affect the sensor's ability to accurately read the coolant level.
5. Electrical Issues: Problems with the vehicle's electrical system, such as blown fuses or faulty wiring, can also affect the sensor's performance. If other electrical components are malfunctioning, it might be worth checking the sensor's connections.
6. Overheating Engine: If the engine is overheating and there is no warning from the coolant level sensor, it could be a sign that the sensor is not functioning properly.
7. Check Engine Light: In some vehicles, a failing coolant level sensor might trigger the check engine light. Diagnostic trouble codes (DTCs) related to the cooling system can be retrieved using an OBD-II scanner to confirm the issue.If you suspect that the coolant level sensor is failing, it is important to address the issue promptly. Ignoring a faulty sensor can lead to severe engine damage due to overheating. It is advisable to have the sensor inspected and, if necessary, replaced by a qualified mechanic.
How It Works
- Get a quote online or set-up a time to have your vehicle looked at.
- Pick time slots that work for you, easily, online.
- We will confirm appointments and send reminders.
- Our mechanics bring everything that is needed to you.
- All you have to do is provided a safe area for the work to be performed.
What we need from you
- A safe place to work on your vehicle
- No working on the side of busy roads
- No working on unstable or steep surfaces.
- We do not perform repairs during severe weather.
- Authorization from a property owner or management.
- Repair work done in a parking lot or at your requires permission.
- We do not do repairs in areas restricted by law.
Common Questions
Service Area
Our primary service area is greater Grand Rapids and includes Comstock Park, East Grand Rapids, Grandville, Kentwood, Walker, and Wyoming
Our secondary service area is provided by our Belding location and includes: Belding, Greenville, Ionia and the sorrounding areas.
Contact us if you have any questions about where we provide services.