Pickup an extra and replace it when changing out your coolant sensor.

Coolant Temps Erratic? Change your coolant temp sensor with a new genuine replacement. This features the green 4-pin connector and includes a new o-ring seal.

Add Clip?:

Yes (add $0.55)

No

Cooling Problems? If you're having cooling issues, check to make sure your fans are operating correctly. Broken blades, or bad bearings, or a bad control module can quickly cause your Audi to heat up faster than it should. Replace your fan control...

Coolant Acting Up? If you're having coolant leaks or just unusual coolant temp problems, you may need a new coolant temp sensor and seal ring. These should be replaced at at the first time of any coolant leaks,or whenever you replace your coolant...