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

Procedure 

• The engine is cold.

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

Fig 1: Coolant Expansion Tank

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -2-.

Courtesy of AUDI OF AMERICA, LLC

-- Place a cloth underneath to catch leaking coolant.

-- Remove the bolt -1- and the Engine Coolant Temperature Sensor on Radiator Outlet -G83-.

• Replace the O-ring after removal.

-- To prevent coolant loss, install the new coolant temperature sensor immediately.

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

Tightening Specifications 

• Refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR