S4 Quattro Wagon V8-4.2L (BHF) (2008)
/Page-1157002.png)
-
Remove the coolant expansion tank screw - arrow -.
-
Disconnect the electrical connector from the Engine Coolant Level (ECL) Warning Switch (F66) and set aside coolant reservoir with coolant hoses
- 1 -and - 2 - connected.
-
Disconnect the gray Engine Speed (RPM) Sensor ( G28) electrical harness connector - 3 -.
-
Using a multimeter, check the Engine Speed (RPM) Sensor (G28) terminals 2 to 3 - B - for resistance.
