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

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. 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.

Courtesy of AUDI OF AMERICA, LLC

Audi A3 from MY 2021/Q2 from MY 2016/Q3 from MY 2019/TT from MY 2015:

-- Remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

Continuation for All Vehicles:

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1-.

-- Place a cloth underneath to catch leaking coolant.

-- Remove clamp -2- and Engine Coolant Temperature Sensor on Radiator Outlet -G83- (example illustration).

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 clamp for secure fit.

-- Check the coolant level. Refer to COOLANT LEVEL, CHECKING AND FILLING .

Tightening Specifications

Refer to OVERVIEW - NOISE INSULATION .