Symptom Related Diagnostic Procedures

WM 911049 Eliminating noise symptoms - Reworking PCM and air-conditioning system regulator

General information

Symptoms

Creaking/clicking noises from around the PCM/air-conditioning system regulator.

Causes and remedial action

Relative movements between the PCM/air-conditioning system regulator and the basic centre console carrier at the front can cause creaking/clicking noises while driving.

If a complaint is received, tricot tape or transparent Teflon tape must be affixed to the PCM/air-conditioning system regulator to remedy the situation on vehicles manufactured before the specified date of introduction March 2006.

Dates of Introduction





Dates of Introduction






Tools and materials

999.551.127.40 Tricot tape => Adhesive tape

000.043.204.83 Teflon tape => Adhesive tape

Preliminary work

1. Remove PCM. => 91101900 Removing and installing PCM display and operator control unit - section on "Removing"
2. Remove air-conditioning system regulator. => 87021900 Removing and installing air-conditioning system regulator - section on "Removing"

Reworking PCM and air-conditioning system regulator

1. Remedial action 1
1.1. Cut a strip of tricot tape approx. 200 mm long.





Sticking on tricot tape

1.2. Cut two strips of tricot tape each approx. 85 mm long.
1.3. Stick tricot tape -1- on the PCM flange -2- at the top and bottom.
1.4. Cut two strips of Teflon tape measuring 50 and 60 mm long.





Sticking on Teflon tape

1.5. Stick Teflon tape -1- on the two PCM guide cams -2- at the left and right.
1.6. Cut a strip of Teflon tape measuring 50 mm x 180 mm.





Sticking on Teflon tape

1.7. Stick Teflon tape -1- on the top of the PCM housing -2-.
2. Remedial action 2
2.1. Cut four strips of tricot tape each approx. 25 mm long.





Sticking on tricot tape

2.2. Stick tricot tape -1- around the four spacers for the air-conditioning system regulator -2-.

Subsequent work

1. Install air-conditioning system regulator. => 87021900 Removing and installing air-conditioning system regulator - section on "Removing"
2. Install PCM. => 91101900 Removing and installing PCM display and operator control unit - section on "Installing"

Working times

91104900: Reworking PCM display and operator control unit; Labor time 70 TU