Q: I have a 2005 vw jetta 2.5. Trying to find location of Coolant Temperature Sensor?

asked by on January 08, 2018

2005 vw jetta 2.5. Radiator fan runs when car is off and kills battery. Looking for Coolant Temperature Sensor and unable to locate it. Can you help?

My car has 129000 miles.
My car has an automatic transmission.

As you face the front of the car, the coolant temperature sensor is on the right side of the top of the engine. You will see a clip that holds the sensor to the engine mounting surface. Look for a plastic top on the sensor (gray or black) and a two-wire terminal wiring harness plugged into the plastic top. The sensor is merely one component in the radiator fan circuit and may not account for the misoperation of the fan. There is also a relay and that relay could simply be stuck closed and/or the circuit commanding the relay could be always powered on due to a short circuit. In any event, all components should be tested prior to condemning them, both to save money and speed the diagnostic. If you desire that a mechanic resolve this, simply request an electrical component diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Engine is knocking loudly and has a weak acceleration.

You may have damaged the engine bearings by running it low on oil. I would suggest not driving it until you have an engine mechanic listen to and diagnose where the noise is coming from. If the noise is up...

Blown fuse or computer system?

Since you shorted the electrical system, you may have damaged electrical components. The main fuses that power each and every circuit on the car may have been shorted and burned out. You should first check each and every fuse in...

After i changed the crankshaft position sensor, i have a code p0302 which is a misfiring code.

The crankshaft and both camshaft position sensors should be replaced at the same time. Nissan had recalls on these sensors. Also, a simple compression test should be performed to verify no mechanical issues exist. This car is known to have...

Related articles

A Buyer’s Guide to the 2012 Volkswagen Routan
For For those who need a vehicle that focuses on people-moving and little else, the 2012 Volkswagen Routan just might hit the mark. With improved fuel economy and responsiveness compared to the Chrysler platform on which it is based, this...
2005 Jeep Wrangler vs. 2005 Chevrolet Blazer: Which One Should I Buy?
Sport SUVs are a class all of their own; these vehicles are meant for a fun drive through the woods and across the trail – but not necessarily to Grandma’s house! Think instead about going through the creek and through...
A Buyer’s Guide to the 2012 Volkswagen Jetta SportWagen
The The station wagon is making a big comeback with American car buyers. While SUVs are still popular, we’ve seen a lot more sales of compact SUVs, crossover utility vehicles, and sport wagons lately. Among those, the 2012 Volkwagen Jetta...