125000691 - S50 CLIMATE CONTROL SYSTEM NOISY'' / (IN THE ENGINE COMPARTMENT)

The climate control works properly, but there is too much noise coming from the engine compartment
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Disconnect the services belt and check whether the noise disappears.
Do not let the engine run for long with the belt disconnected
Check whether the noise only occurs with the engine switched off		Continue to Step 2The noise disappears with the services belt disconnectedContinue according to the instructions inSee table    See table S10 ENGINE WHILSTLING / SERVICES BELT NOISY
The noise only occurs with the engine switched offCheck that it is not coming from the electric fan
The noise does not disappearContinue to Step 1
1PIPES AND COMPONENTS FIXING CHECKAll OKProblems metOperation
Check that the compressor, the pipes and the system components are correctly fixed.

In order:

  • Drier filter fixing
  • Pipes fixing (with bands and spacers)
  • No interference between the pipes and other components in the engine compartment
  • Compressor fixing to the engine
Continue to Step 2Components fixing not correctRestore the correct tightening. If necessary, replace the bands or spacers
Interference in the engine compartmentRestore the correct arrangement of the pipes
2CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis.