How to Replace the Radiator Fan Switch
The radiator fan switch controls the radiator in your engine, so when it malfunctions the radiator will not be able work properly. And when the radiator doesn't work right, the engine won't be able to cool down quickly. And you probably know already what happens when your car engine gets overheated. So if you notice that the radiator fan isn't coming on when the engine starts to heat up or if the engine gets hotter more often than usual, the fan switch has to be checked and replaced if necessary.
Difficulty level: Easy to Moderate
- Socket set
- Work gloves
Step 1: With the car ignition off, open the hood with the lever inside the car. Continue opening it by reaching under the hood to pull the switch and release.
Step 2: Following the wires, unplug the radiator fan from the car's electrical system. Check the user manual of your car if you are not sure of which wires to unplug.
Step 3: Once the radiator fan has been unplugged, it is now safe to remove the switch from the fan assembly. You shouldn't much difficulty removing this part with the wrench and socket, but if it has a mounting bracket you will have to unscrew it first.
Step 4: With the fan switch removed, install the replacement fan switch. Make sure to tighten it enough so it wouldn't come loose later on. If the mounting screws have been loosened, tighten them as well.
Step 5: Close the hood and give your car a test run. If installed correctly the radiator fan should now work properly.
NOTE: Don't install the fan switch if the engine is still hot. If the engine has been running for a while, wait for it to cool off for a couple of minutes first before opening the hood and starting installation.