2427589 - L57 WINDSCREEN MISTING WITH THE FORMATION OF CONDENSATION

On vehicles equipped with a windscreen misting sensor, when the air conditioning is on and there is condensation, it does not work and the windscreen mists up.The climate control system should intervene, forcing the recirculation flap into the dynamic air position, activating the compressor, controlling the distribution of air to the windscreen and activating the heated rear windscreen.
Results of the tests
0PRELIMINARY CHECKAll OKProblems metOperation

Check:

  • that the misting sensor lens in the windscreen is not obstructed by foreign bodies
Continue to Step 1Misting sensor lens obstructed by foreign bodiesClean the lens
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the Examiner and check for errors at the climate control node. See Test   5040DB  Check on operation of windscreen misting sensor Continue to Step 2The Examiner warns of a misting sensor errorReplace the misting sensor
The Examiner warns of a misting sensor errorRenew the wiring
The Examiner warns of a misting sensor errorRestore power supply
2CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Replace the misting sensor and check that the fault is no longer presentEnd of diagnosis