Engine Coolant Temperature Sensor -G62-, REMOVING AND INSTALLING, VEHICLES WITHOUT HIGH-VOLTAGE SYSTEM

Special tools and workshop equipment required

Socket: T10405

Fig 1: Identifying Socket T30
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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 2: Coolant Expansion Tank

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All except Audi Q7/Q8:

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

Audi A8/Q7/Q8 with Particulate Filter:

-- Remove the plenum chamber bulkhead. Refer to PLENUM CHAMBER BULKHEAD, REMOVING AND INSTALLING .

Audi Q7/Q8 with Particulate Filter:

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-- Disconnect the connector -2- for the Dual Exhaust Temperature Sensor 1 -GX41-.

-- Remove the connector from the bracket and then free up the wires.

-- Remove the union bolt -1-, free up the pressure pipe on the clip -arrow- and move to the side.

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Continuation for All Vehicles:

Fig 3: Heat Shield For Vehicles With Particulate Filter

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-- Remove the nuts -arrows- and the bolt -2-.

-- Free up the wires and remove the heat shield -1- (example illustration).

All with Particulate Filter except Audi A8/Q7/Q8:

Fig 4: Differential Pressure Sensor

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-- Disconnect the connector -3-.

-- Remove the bolt -1- and free up the Particulate Filter Differential Pressure Sensor -G1037-.

-- Free up the wiring harness.

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-- Remove the bolts -2- and remove the bracket.

Continuation for All Vehicles:

Fig 5: Identifying Engine Coolant Temperature Sensor

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-- Disconnect the connector -1-.

-- Place a cloth underneath to catch leaking coolant.

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

Replace the O-ring after removal.

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

-- Install the vacuum pump. Refer to VACUUM PUMP, REMOVING AND INSTALLING .

-- Install the plenum chamber bulkhead. Refer to PLENUM CHAMBER BULKHEAD, REMOVING AND INSTALLING .

-- Install the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

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

Tightening Specifications

Refer to OVERVIEW - CYLINDER HEAD
Refer to OVERVIEW - ENGINE/MOTOR COOLANT TEMPERATURE SENSOR
Refer to OVERVIEW - HEATED OXYGEN SENSOR