Front Door Window Sluggish or Poorly Adjusted
Topic number

LI72.10-P-069496

Version

1

Function group

72.10 - Front door

Date

1/23/25

Validity

Special protection M/GLE Guard, code Z04 and Z05

Reason for change

Complaint
Windows of the front doors poorly adjusted/sluggish

Cause
The settings of the front windows may be set incorrectly

Remedy
Adjustment of the windows or window guides as specified in AR72.10-P-1960GQS . A video with further information
on instructions can be found in the attachment.
Description of the videos:
Safety Information:
1.

AS00.00-Z-0011-01A Risk of injury with trapped or crushed fingers when performing removal/installation and adjustment work on hoods, doors, lids and sliding roof
2.
AH67.00-P-0003-01FB Notes on avoiding damage to glass and windows of special protection vehicles
Work Procedures:
1.
2.
3.
4.
5.

6.

7.
8.

Connect the operating switch to the door wiring harness and partially raise the window (not illustrated)
Slacken and remove the upper nuts on both spacers
Carefully lift the window off the spacer and move it towards the rear against the rear window guide
Lower the window again and check the offset between the spacer and the mounting holes at the rear and front
Adjust the mounting at the rear - The window must lie parallel against the rear guide along its entire length Undo the fasteners of the bracket on the window lifter - Align the bracket with spacer to the bore in the window
mounting, first in the longitudinal direction and then vertically - Tighten the fasteners of the bracket/window lifter
(M6) 12 + 5 Nm - Fit the nut on the spacer at the top but do not tighten it
Adjust the mounting at the front - Lift the window; it must lie parallel against the rear guide along its entire length
- Undo the fasteners for fore/aft adjustment - Align the bracket with spacer to the bore in the window mounting,
first in the longitudinal direction and then vertically - Tighten the fasteners of the bracket/window lifter (M6) 12 +
5 Nm. Fit the nut on the spacer at the top and tighten it (M6) 12 + 5 Nm
Now tighten the nut on the rear spacer at the top (M6) 12 + 5 Nm
Check the movement of the window - On the outside of the window, mark the position of the window relative
to the rear window guide with tape - Open and close the window several times - The movement of the window
should run parallel and uniformly along the guide, free of any tilting motion - Repeat the adjustment procedure if
necessary

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9.

To complete the adjustment, check the window for ease of movement. To do this, measure the power consumption of the window lifter motor. The maximum current draw is approximately 9 Amps while the window is being
raised.

Attachments
File

Description

Video 01_W166 Z04_Z05.mp4

Adjustment of side window in left and right front doors,
Part 1

Video 02_W166 Z04_Z05.mp4

Adjustment of side window in left and right front doors,
Part 2

Video 03_W166 Z04_Z05.mp4

Adjustment of side window in left and right front doors,
Part 3

WIS-References
Document number

Title

Note

AR72.10-P-1000GQS

Remove door lining of front door

AR72.10-P-0900GQS

Remove/install door module

AS67.00-Z-0003-01A

Risk of injury with crushed or trapped
hands and feet when working on windows

AH67.00-P-0003-01FB

Notes on avoiding damage to glass
and windows of special protection vehicles

AR72.10-P-1960GQS

Adjust front door side window

Basic document for adjustment of side
windows

Disclaimer
NOTE: The information contained in this document is intended for use by trained, professional technicians with the
knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz
approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and
provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect
is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a
symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes
resulting in the same or similar symptoms or conditions described in this document, and trained professional service
technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained
in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.

Symptoms
Body > Glazing > Window lifting mechanism/window operation > Stiff/sluggish

Parts
Part number

ES1 ES2 Designation

Quantity Note

EPC

A0019912798

Strengthened clips

24

Valid for Z04 at the bottom and Z05
(all)

X

A0009918698

Clip

12

Valid for Z04 and standard equipment, not Z05

X

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Operation numbers/damage codes
Op. no.

Operation text

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Time

CCUSHWA

Damage
code

Note

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