194002011 - H006 POOR DRIVING COMFORT - AT REAR

The customer complains of poor driving comfort especially noticeable at the back.
1ROAD TEST TO EVALUATE THE DRIVING COMFORTAll OKProblems encounteredOperation
Carry out a road test to evaluate the driving comfort of the rear suspension    See Test 44A ROAD TEST FOR COMFORT EVALUATIONEnd of diagnosisSubjective judgement compared with the reference vehicle 6Acceptable behaviour of the vehicle
Subjective judgement compared with the reference vehicle 5.5Move on to Step 2
Subjective judgement compared with the reference vehicle 3-4Move on to Step 3
2END OF TRAVEL BUFFER CHECKAll OKProblems encounteredOperation
Check that the end of travel buffer for the rear spring is not faulty carrying out    See Test 4420AA CHECK ON REAR SUSPENSION SPRING END OF TRAVEL BUFFERMove on to Step 3End of travel buffer deteriorated.Replace the mountingOp. 4420W14 REAR SUSPENSION END BUFFER - REPLACE
3SHOCK ABSORBER EFFICIENCY CHECKAll OKProblems encounteredOperation
Check the efficiency of the shock absorbers by carrying out manual compression manoeuvres (resting on the wheel arch by the centre of the wheel), which should be carried out on both sides of the vehicle.Move on to Step 4Sudden return without dampingReplace the shock absorber that is not working properly    Op. 4420A30 REAR SUSPENSION SHOCK ABSORBER (ONE), LEFT OR RIGHT - R.R. - CHECK WHEEL GEOMETRY SEPARATELY
4VEHICLE GEOMETRY CHECKAll OKProblems encounteredOperation
After replacing the shock absorbers, check the geometryEnd of diagnosisGeometry values do not conformRestore the geometry to the correct values.    Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY