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Noises At The Instrument Panel (68.10/45)

Publication date: 2006-01-01
Reference number: 68.10/45

NOISES AT THE INSTRUMENT PANEL

NOISES AT THE INSTRUMENT PANEL

TECHNICAL SERVICE BULLETIN

Reference Number(s): P-B-68.10/45, Date of Issue:  January 2006
MERCEDES-BENZ: Model 220
GROUP: 68 - Interior Equipment

SUBJECT

Model 220 

Noises at the Instrument Panel 

SERVICE INFORMATION

This bulletin is intended to assist in finding an effective solution to the complex topic of customer reports about "noise".

Possible causes for noises from the Instrument Panel:

Fig 1: Instrument Panel Noise Sources
G04601503
INSTRUMENT PANEL NOISES

I. Noises in area of instrument cluster at instrument panel wood trim strip Model 220 up to 392658 1-Figure 1
II. Cracking noise in the area of the instrument panel defroster vent air ducting Model 220 up to 398923 2-Figure 1
III. Noises between instrument panel and COMAND Model 220 up to 368543 3-Figure 1
IV. Rattling noise in area of the center tower rear ventilation air duct Model 220 up to 368543 4-Figure 1
V. Rattling noise in area of the center tower rear ventilation air duct Model 220 up to 404697 5-Figure 1
VI. Rattling noise at ashtray Model 220 up to 392658 6-Figure 1
VII. Vibrations noises from instrument panel Model 220 up to 404697 7-Figure 1

I. NOISES IN AREA OF INSTRUMENT CLUSTER AT INSTRUMENT PANEL WOOD TRIM STRIP

Up to VIN 392658

Cause: The wood trim strip rubs against the instrument cluster (Arrow, Fig 2).

This causes creaking noises.

  1. Remove instrument cluster (See WIS-document AR54.30-P-6015I)
  2. Apply approx. 1.5 ml Special Sliding Compound onto the upper edge of the wood trim strip (Fig 2).
  3. Install instrument cluster (See WIS-document AR54.30-P-6015I).
    Fig 2: Instrument Panel Wood Trim Strip
    G04601504

II. CRACKING NOISE IN THE AREA OF THE INSTRUMENT PANEL DEFROSTER VENT AIR DUCTING

Up to VIN 398923

Cause: Air ducting of defroster vent comes into contact with the instrument panel.

Intermittent cracking noise on left side.

  1. Loosen upper screws (right and left) of instrument panel (1-, 2- Fig 4).
  2. Pull instrument panel toward driver.
  3. Tighten screws.
  4. Conduct a road test.

    Noise still present:

  5. Remove instrument panel (See WIS-document AR68.10-P-1000M).
  6. Insert a 3 cm strip of felt (Arrows, Fig 3 - 2 strips of felt total) tightly between defroster vent and air ducting on the side.
  7. Install instrument panel (See WIS-document AR68.10-P-1000M).
    Fig 3: Felt Strip Between Defroster Vent And Air Ducting On Side
    G04601505
Fig 4: Instrument Panel Fastener Locations
G04601506

III. NOISES BETWEEN INSTRUMENT PANEL AND COMAND

Up to VIN 368543

Cause: COMAND rubs against instrument panel.

  1. Remove COMAND.

    up to 31.8.02 (See WIS-document AR82.85-P-7472I)

    as of 1.9.02 (See WIS-document AR82.85-P-1000M)

  2. Glue a 12 cm felt strip (Fig 5 - 2 strips of felt total) onto the left and right sides of the COMAND cutout.
  3. Install COMAND.

    up to 31.8.02 (See WIS-document AR82.85-P-7472I)

    as of 1.9.02 (See WIS-document AR82.85-P-1000M)

    Fig 5: Felt Strip On COMAND Cutout
    G04601507

IV. RATTLING NOISE IN AREA OF THE CENTER TOWER REAR VENTILATION AIR DUCT

Up to VIN 368543

Cause: The center tower rear ventilation air duct contacts the footwell duct.

  1. Pull out footwell carpet at right of center tower.
  2. Glue four 6 cm strips of felt between rear ventilation air duct and footwell duct (1-Fig 6).
  3. Replace footwell carpet at right of center tower.
    Fig 6: Felt Piece On Air Duct
    G04601508

V. RATTLING NOISE IN AREA OF THE CENTER TOWER REAR VENTILATION AIR DUCT

Up to VIN 404697

Cause: The tab of the rear ventilation air duct rattles against the mounting strip for the instrument panel.

  1. Remove ashtray (See WIS-document AR68.20-P-2400M).
  2. Remove AAC operating and control unit (N22) (See WIS-document AR83.40-P-6350M).
  3. Glue two 2 cm strips of felt between instrument panel mounting strip and rear ventilation air duct (Fig 7 and Fig 8 - 4 strips of felt total).
  4. Install AAC operating and control unit (N22) (See WIS-document AR83.40-P-6350M).
  5. Install ashtray (See WIS-document AR68.20-P-2400M).
    Fig 7: Felt Strips On Tab Of Rear Ventilation Air Duct
    G04601509
    Fig 8: Felt Strips Between Instrument Panel Mounting Strip And Rear Ventilation Air Duct
    G04601510

VI. RATTLING NOISE AT ASHTRAY

Up to VIN 392658

Cause: Ashtray makes contact with the air duct.

  1. Remove ashtray (See WIS-document AR68.20-P-2400M).
  2. Glue two 8 cm strips of felt over the lower right corner of the ashtray housing (1-Fig 9).
  3. Install ashtray (See WIS-document AR68.20-P-2400M).
    Fig 9: Felt Piece On Ashtray Housing
    G04601511

VII. VIBRATIONS NOISES FROM INSTRUMENT PANEL

Up to VIN 404697

Cause: Front passenger airbag cable tie comes into contact with the air duct.

  1. Remove right side air outlet (See WIS-document AR68.10-P-1100M).
  2. Insert a 2 cm strip of felt or foam material firmly between the tie and the instrument panel air duct (Fig 10).
  3. Install right side air outlet (See WIS-document AR68.10-P-1100M).
    Fig 10: Felt/Foam Between Tie And Instrument Panel Air Duct
    G04601512

AUXILIARY REPAIR MATERIALS

AUXILIARY REPAIR MATERIALS

Qty. Material Name Order Number
1 (1) Special Sliding Compound, Lubrication Oil (30ml) A 000 989 36 60
1 (2) Felt Strip A 000 983 17 10
(1) Sufficient for 20 cars, submit as Local Purchase - LUB00185, Qty. 1, handling is included.
(2) Sufficient for at least 4 cars (actual number depends on resolution), submit as Local Purchase - FLT00033, Qty. 1, handling is included.

IN CASE OF WARRANTY

Operation:

  1. REPAIR I - NOISES IN AREA OF INSTRUMENT CLUSTER WOOD TRIM STRIP RECTIFY (02-4728)
  2. REPAIR II - CRACKING NOISE IN THE AREA OF THE DEFROSTER VENT AIR DUCTING RECTIFY (02-4729)

    ROAD TEST, PERFORM (00-9151)

    INSTRUMENT PANEL - COMPLETE, R & R (68-4605)

  3. REPAIR III - NOISES BETWEEN INSTRUMENT CLUSTER AND COMAND RECTIFY (02-4730)
  4. REPAIR IV - RATTLING NOISE IN REAR AREA OF THE REAR VENTILATION AIR DUCT RECTIFY (02-4732)
  5. REPAIR V - RATTLING NOISE IN FRONT AREA OF REAR COMPARTMENT VENTILATION AIR DUCT RECTIFY (02-4731)
  6. REPAIR VI - RATTLING NOISE IN AREA OF FRONT ASHTRAY RECTIFY (02-4733)
  7. REPAIR VII - VIBRATION NOISES IN UPPER AREA OF INSTRUMENT PANEL RECTIFY (02-4734)
WARRANTY INFORMATION

Damage Code Operation Number Time (hrs.) Model Indicator (s)
Repair I 
6800136		 02-4728 0.4 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
Repair II 
8301436		 02-4729 0.3 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
00-9151 0.3 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
68-4605 4.5 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
Repair III 
82 851 36		 02-4730 0.7 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
Repair IV 
83 118 36		 02-4732 0.4 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
Repair V 
83 118 36		 02-4731 0.3 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
Repair VI 
68 139 36		 02-4733 0.3 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
Repair VII 
83 118 36		 02-4734 0.7 hrs. J2, J3, M1, M2, M4, M5 M6, M7, M8, M9
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