The 2004 Passat thermostat location depends on what engine you have in the car. Problems with the thermostat occur from skipped maintenance appointments.
The coolant in your 2004 Passat’s radiator does not burn away at the same pace as gas or oil. The coolant breaks down over time and the sediment can damage the thermostat.
The 2004 Passat thermostat location can be discovered and you can replace it if need be, right at home in the driveway.
Before you begin, if you have recently driven the car, allow it to cool for an hour or more. You will have to work near the radiator and engine to locate the Passat thermostat so allowing the car time to cool will prevent accidental burns.
The Passat thermostat sits beneath the dome shaped housing. On the 1.9L Diesel thru 2.8L Afp engine you should see two bolts holding the Passat thermostat housing in place.
The thermostat in the 2.8L Afq Passat is on the same side but it sits lower on the engine. To access the thermostat on this engine you will need to remove the timing belt and a few of the pulleys.
If you decide that you want to replace the Passat’s thermostat yourself, the job should take no more than an hour to do. You will need some fresh coolant because you have to drain the radiator.
You will also need a socket wrench set and some general hand tools like pliers and screw drivers.
Lastly, don’t be cheap when it comes to taking care of your 2004 Passat. A thermostat for the Passat will cost $10 to $30 but remember, you get what you pay for.
Also depending on where you live, some auto part stores may not have the Passat thermostat in stock. It doesn’t mean that they can’t get it for you but it’s always best to call ahead
Tips: If you spill any coolant, clean it up right away because it is harmful to animals. Write a note and put it into your driver’s manual so that you have a record of when you replaced the Passat’s thermostat.
Check your repair in a few days for any signs of leaks. If there are leaks around the thermostat location there is likely debris on or under the gasket preventing it from laying flush. Don’t ignore the issue because it will get worse. Remove the thermostat and clean the gasket as well as the surface it lays on.