Engine Coolant Temperature Sensor On Radiator Outlet -G83-, Removing And Installing

Procedure 

• The engine is cold.

-- Remove the cover -1- toward the rear in direction of -arrows- and remove.

Courtesy of AUDI OF AMERICA, LLC

-- To reduce the residual pressure in the cooling system, briefly open the coolant expansion tank cap -1- by releasing the retainer in direction of -arrow-.

-- Reinstall the cap until it engages.

-- Remove the right front wheel spoiler. Refer to OVERVIEW - FRONT WHEEL HOUSING LINER .

2.9L Engine:

-- Disconnect the connector -1-.

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

-- Remove the bolt -2- and the Engine Coolant Temperature Sensor on Radiator Outlet -G83-.

3.0L Engine:

-- Disconnect the connector -1-.

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

-- Remove the bolt -2- and the Engine Coolant Temperature Sensor on Radiator Outlet -G83-.

All:

• Replace the O-rings after removing them.

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

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

Tightening Specifications 

• Refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR .
• Refer to OVERVIEW - FRONT WHEEL HOUSING LINER .