NHTSA ID Number: 11023155
Manufacturer Communication Number: LI72.20-P-079685
TSB/Document Date: 2025-09-17
Summary
Complaint Bulging and contact of the rear spoiler when hatch is opened (picture 1-1). When opening the rear hatch, the rear spoiler rests at the roof edge, which can result in damage to the rear spoiler and roof if the hatch is forcefully opened when the rear spoiler is bulged over (picture 1-2). Cause In the event of higher outside temperatures, the spoiler of the rear-end door thermally expands and may be above the roof by several millimeters. When opening the rear hatch when the rear spoiler is in a bulged condition, this can result in a collision between the rear spoiler and the roof edge. The cause may be related to fastening clips of the rear spoiler that have become loose. Remedy Remove rear spoiler, replace all fastening clips. Install rear spoiler again. In the event of damage, repair the vehicle. After assembly of the rear spoiler, check whether the clip is completely locked: When the rear-end door is open, press against the rear spoiler with your thumbs with around 5 kg of pressure (picture) 4). If it is possible to easily press the rear spoiler against the roof edge, the clip is not locked or may be damaged.
Rear Hatch Top Spoiler Contacting Roof Edge
Or Flexing When Opening The Hatch Fully
Topic number
LI72.20-P-079685
Version
1
Function group
72.20 - Tailgate, rear door
Date
9/15/25
Validity
X247, X243 - EQB and GLB models
Reason for change
Complaint
Bulging and contact of the rear spoiler when hatch is opened (picture 1-1). When opening the rear hatch, the rear
spoiler rests at the roof edge, which can result in damage to the rear spoiler and roof if the hatch is forcefully opened
when the rear spoiler is bulged over (picture 1-2).
Attachments
File
Description
Bild 1-1.jpg
Bulging of the rear spoiler against the roof edge
Bild 1-2.jpg
Rear spoiler collides with the roof edge and can cause
consequential damage to the rear spoiler and roof edge
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© Copyright Mercedes-Benz
AG
CCUSHWA
Page 1 / 4
Cause
In the event of higher outside temperatures, the spoiler of the rear-end door thermally expands and may be above the
roof by several millimeters.
When opening the rear hatch when the rear spoiler is in a bulged condition, this can result in a collision between the
rear spoiler and the roof edge.
The cause may be related to fastening clips of the rear spoiler that have become loose.
Remedy
Remove rear spoiler, replace all fastening clips. Install rear spoiler again. In the event of damage, repair the vehicle.
After assembly of the rear spoiler, check whether the clip is completely locked:
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© Copyright Mercedes-Benz AG
CCUSHWA
Page 2 / 4
When the rear-end door is open, press against the rear spoiler with your thumbs with around 5 kg of pressure (picture
4). If it is possible to easily press the rear spoiler against the
roof edge, the clip is not locked or may be damaged.
Attachments
File
Description
Bild 2.jpg
Only W247: Remove black fixing pins on the external rear
spoiler in their entirety
Bild 3.jpg
Only W247: Seal openings on the rear-end door caused
by the lack of fixing pins with protective film
Bild 4.jpg
Check of locking of center fastening clip of rear spoiler
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
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© Copyright Mercedes-Benz AG
CCUSHWA
Page 3 / 4
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 > Door/Flap > Hood/flap > Trunk lid/liftgate > Inaccurate fit
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC
Hexagon nut
4
Only W247: Self-locking nut, tightening torque 4 Nm
X
A1779890085
Protective film
1
Only W247: Cut protective film accordingly so that the holes for the fixing
pins are covered after gluing on the
film.
X
Operation numbers/damage codes
Op. no.
Operation text
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© Copyright Mercedes-Benz AG
Time
Damage
code
H
88335
CCUSHWA
Note
Page 4 / 4
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TSB/Document ID: LI72.20-P-079685
Replacement Service Bulletin Number:
MFR Communication Date: 2025-09-16
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: STRUCTURE:BODY
MFR Component System:
MFR Component Subsystem:
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