Overview - Engine Coolant Temperature Sensor

Fig 1: Exploded View Of Engine Coolant Temperature Sensor

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 9 Nm
2. Motor Temperature Sensor -G407-
   • Removing and Installing. Refer to Motor Temperature Sensor -G407-, REMOVING AND INSTALLING .
3. O-Ring/Centering Ring
   • Allocation. Refer to Fig 2.
4. Bolt
   • 4.5 Nm
   • Thread cutting
   • Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
5. Engine Coolant Temperature Sensor on Radiator Outlet -G83-
   • Removing and installing. Refer to Engine Coolant Temperature Sensor on Radiator Outlet -G83-, REMOVING AND INSTALLING .
6. O-Rings
   • Replace after removing

Allocation of the O-Ring/Centering Ring 

Fig 2: Allocation of the O-Ring/Centering Ring

Courtesy of AUDI OF AMERICA, LLC

• Check the centering ring -1- for damage; if it is, then replace the engine coolant temperature sensor.
• Always replace the O-ring -2- after disassembly.