Engine Coolant Temperature Sensor -G62-, REMOVING AND INSTALLING: Procedure

• The engine is cold.

Depending on the model, preliminary work may be required. Refer to COOLANT PUMP/COOLANT THERMOSTAT .

-- Quickly open the coolant reservoir cap and release any remaining pressure in the cooling system and then close it again.

Versions with Secondary Air System (Different Installation Position): 

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1-.

-- Press the release buttons on both sides and remove the secondary air injection hose -2-.

Continuation for All Vehicles: 

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1-.

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

-- Remove the bolts -2- and remove the Engine Coolant Temperature Sensor -G62- -item 3-.

• Replace the O-rings after removing them.

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

-- Fill with coolant. Refer to COOLANT, DRAINING AND FILLING .

There are additional procedures depending on the model. Refer to COOLANT PUMP/COOLANT THERMOSTAT .

Tightening Specifications 

• Refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR