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Coolant Temperature Sensor Replacement
Typical Cost: Low
Mobile Repair? Yes
Typical Lead Time: 24 - 48 hours depending on part availability
What does a coolant temperature sensor do?
The coolant temperature sensor sends a signal to both the engine ECU and the dashboard temperature gauge (where fitted) to indicate the running temperature of the cooling system.
How does a coolant temperature sensor work and what are the components?
The coolant temperature sensor is a simple resistance sensor that has a feed voltage and a return voltage signal to the engine control unit (and temperature gauge) that is altered as the unit heats up.
Typical symptoms that require a coolant temperature sensor to be replaced.
Typically a failed temperature sensor will not read at all or reads at maximum. If the engine is running as normal, without overheating and the gauge is at zero or maximum, it’s highly probable the sensor has failed.
What happens during a cooling temperature sensor replacement?
Changing coolant temperature sensor is a routine repair for all mechanics and can be done both kerbside as well as in the workshop, providing it is safe to do so.
Whilst there are variations between manufacturers, the basics are pretty similar.
The mechanic will;
- Assess the situation by reading the diagnostic codes and checking live data
- Once confirmed that the coolant temperature sensor is faulty, continue on to replacing it.
- Once replaced, start the engine and recheck the error codes
What does this repair cover?
Unless otherwise stated, the quote for your coolant temperature sensor to be replaced will cover;
- The cost of the coolant temperature sensor
- Coming to you
- Fitting of the parts
- Disposal of the old parts (unless you request to keep them)
- VAT (if applicable)
- 12 months parts and labour warranty
What to search for on the ClickMechanic site?
Coolant temperature sensor replacement
Associated repairs
Thermostat replacement
How much does it cost to have a coolant temperature sensor replaced?
The cost of a coolant temperature sensor replacement depends on your car and what parts your car's manufacturer recommends.
Find out what you could save by visiting ClickMechanic
https://www.clickmechanic.com/bookings/car
FAQ’s
Can I supply my own parts?
No, we will not fit customer supplied parts unless they are a brand new item, purchased from a dealership with the receipt as proof of purchase. There is no flexibility over this due to insurance and warranty issues.
What happens if the mechanic finds that the coolant temperature sensor doesn’t require changing and the problem is due to another issue?
In this scenario, the mechanic will provide a no obligation quote for the correct repair. Should you accept this, the mechanic can alter the booking accordingly. If you decide not to go ahead with the alternative repair, the mechanic can change the booking to a call out and diagnostic booking and charge according to the time spent with the vehicle and call out.