Engine Coolant Temperature Sensor on Radiator Outlet -G83-, REMOVING AND INSTALLING

WARNING: This page is about a different car, the 2024 Audi Q3 and 2023 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.

Procedure

The engine is cold.

-- Briefly open the coolant expansion tank cap -arrow- and release any residual pressure in the cooling system and then close it again until it locks.

Fig 1: Identifying Coolant Reservoir Cap

Courtesy of AUDI

-- Disconnect the connector -1-.

Fig 2: Component Location Engine Coolant Temperature Sensor

Courtesy of AUDI

-- Place a cloth underneath to catch any escaping coolant.

-- Remove the clamp -2- and Engine Coolant Temperature Sensor on Radiator Outlet -G83- -item 3-.

Replace the O-ring after removal.

-- Insert the new engine coolant temperature sensor immediately so that as little coolant is lost as possible.

-- Check the coolant level. Refer to Coolant Level, Checking .