Coupling of the rear axle differential has reached its wear limit
Topic number

LI35.31-P-077429

Version

2

Function group

35.31 - Rear axle center assembly

Date

7/9/24

Validity

118, 177, 247 with engine 260, 282, 654
with code M005 (Vehicles with 4MATIC/all-wheel drive)

Reason for change

Complaint
Instrument cluster message "4MATIC inoperative".
The following fault code may be present in all-wheel drive control unit N15/17:
P147354 - Erroneous adaptation of the transfer case. The calibration is missing.
P14759A - The coupling of the transfer case has malfunctioned. The operating conditions for the component or the
system have not been fulfilled.

Cause
Coupling of the rear axle differential has reached the wear limit or a coupling defect is present.

Remedy
Please read off the installed part number of the rear axle differential.
For model designations (flat model series and not AMG 35 variants) 118345; 118347; 118613; 118615; 118647;
177013; 177015; 177045; 177047; 177145; 177147; 177188; 177945; 247013; 247045; 247047, 247476 247747,
247646 247647 the following applies:
•
•

If part number A2473502702 is not installed, the coupling package can be replaced. To this end, a repair kit has
been added as a replacement part.
If part number A2473502702 is installed, the installation of the coupling package repair kit is not permissible and
the rear axle differential should be replaced.

For model designations (high model series and AMG 35 variants) 177151; 177051; 118351; 118651; 177951, 247751
247753, 274651 the following applies:
•

If one of the part numbers A2473502702; A2473502503; A2473504504 has not been installed, the coupling package can be replaced. To this end, a repair kit has been added as a replacement part.

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© Copyright Mercedes-Benz AG

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•

If one of the part numbers A2473502702; A2473502503; A2473504504 has been installed, the installation of the
coupling package repair kit is not permissible and the rear axle differential should be replaced.

If the removed friction plates show signs of a pad becoming detached, please contact product support.
For example pictures of the pad becoming detached at the friction plates, see the attachment.

Attachments
File

Description

Beispielbild Reibbelag Ablösung.pdf

WIS-References
Document number

Title

Note

AR35.31-P-0002MFA

Remove/install multiplate clutch of the
rear axle differential

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
Power transmission > Transfer case > Function > Electrical fault/Fault code

Parts
Part number

ES1 ES2 Designation

A 247 350 90 04

Quantity Note

EPC

MULTIPLATE CLUTCH REPAIR KIT

X

Operation numbers/damage codes
Op. no.

Operation text

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© Copyright Mercedes-Benz AG

Time

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Damage
code

Note

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