Logic of naming sensors in VW-group is simple it contains "G" (german "Geber") + sensor number. The sensor number is unique. Here you can find fitting location, connectors and pins description, some information about sensors signals.

To our mind, sensors information is reference, so there is only simple search by sensor number.


Audi A8 4E (2002 -)
Audi A6 4F (2005- )
Audi Q7 4L (2007- )
Audi A4 8K (2008-)
Audi A3 8P (2003- )
Audi Q5 8R (2009- )

Audi A6 4F (2005- ). G18 Описание

Temperature sensor -G18


A - Bolt

B - Clip

C - Overheating cut-out -S24

D - Temperature sensor -G18

E - O-ring seal

F - Connector



The overheating cut-out -S24, the temperature sensor -G18 and the associated wiring form one unit, and can only be replaced together.



K Notes:

J At 25 °C the resistance of the temperature sensor -G18 is approx. 2.6 KOhm . It decreases as the temperature rises.

J By way of the resistance of the temperature sensor -G18 the additional heater control unit -J364

 detects the coolant temperature in the auxiliary heater and controls its various operating states and outputs according to the stored switching temperatures.


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