NHTSA ID Number: 11003208
Manufacturer Communication Number: LI83.10-P-077934
TSB/Document Date: 2024-07-04
Summary
Complaint Noise can be heard coming from the air conditioning system at higher blower motor speeds. Cause Leaves/foreign objects have entered through the water drain grille in the water drain thereby causing an imbalance and noise in the blower wheel. Remedy Instructions for the installation of Retrofit Kit TOP598-MFA2 Bermuda foam for model series X243/X247 A2478351400 Sealing frame A2478351500 Sealing frame A2478351600 Sealing frame A2478351700 Sealing frame A2478351800 Sealing frame A2478351900 Sealing frame A2478300104 Housing cover A2478320200 Drainage fitting Steps: 1- Remove windshield wiper as per work instructions: AR82.30-P-6100MFA 2- Remove water baffle cover as per work instructions:AR83.10-P-1411MFB 3- Thoroughly clean body/body-in-white at marked positions and remove plastic cover to air inlet. Then extract air filter. 4- Attach body-in-white foam A2478351600 to cutout at body-in-white. If necessary, fix part in place with light pressure. 5- Attach foam mat A2478351400 to previously cleaned part of body-in-white. Ensure that hole of foam mat is over the hole in the body-in-white. 6- Attach sealing frame A2478351800 along edge as shown in picture. Ensure that the plastic strip is inserted flush with the offset in the previously attached foam mat. 7- Attach sealing frame A2478351700 as shown in the picture. Take care here as the strip should be attached flush to the foam strip positioned lengthwise and must run vertically on the body-in-white downward in the direction of the seam. 8- Attach sealing frame A2478351900 as shown in the picture. Ensure that the foam strip must run along the seam and must be curved outward along the running direction at the end. (As a guide, the curvature should run so that there is a space of approx. 1 cm between the foam strip and the threaded hole). Alternatively, if the corresponding foam in the right picture is present, place the sealing frame A2478351900 along the foam as shown in the picture. 9- Insert drainage fitting A2478320200. When doing so, ensure that the foam flap is aligned in the direction of the fender as shown in the picture and does not fold upward during insertion. Insert fitting with light pressure until it audibly engages. 10- Attach sealing frame A2478351500 to water baffle as in the picture and insert inlet sieve A2478300104 (see picture). 11- Insert water baffle. When doing so, ensure that sealing frame A2478351600 does not fall out of position. Also ensure that the foam frames A2478351700, A2478351800 and A2478351900 run between the body-in-white and the water baffle (see picture). 12 - Clean out the water drains of any debris and ensure proper water flow away from the blower area. 13- Reinstallation of water baffle and windshield wiper (see step 1).
Noise from fan motor
Topic number
LI83.10-P-077934
Version
1
Function group
83.10 - Ventilation
Date
6/5/24
Validity
X243 left-hand drive vehicle, X247 left-hand drive vehicle
Reason for change
Complaint
Noise can be heard coming from the air conditioning system at higher blower motor speeds.
Cause
Leaves/foreign objects have entered through the water drain grille in the water drain thereby causing an imbalance
and noise in the blower wheel.
Remedy
Instructions for the installation of Retrofit Kit TOP598-MFA2 Bermuda foam for model series X243/X247
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© Copyright Mercedes
-Benz AG
CCUSHWA
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A2478351400 Sealing frame
A2478351500 Sealing frame
A2478351600 Sealing frame
A2478351700 Sealing frame
A2478351800 Sealing frame
A2478351900 Sealing frame
A2478300104 Housing cover
A2478320200 Drainage fitting
Steps:
1- Remove windshield wiper as per work instructions: AR82.30-P-6100MFA
2- Remove water baffle cover as per work instructions:AR83.10-P-1411MFB
3- Thoroughly clean body/body-in-white at marked positions and remove plastic cover to air inlet.
Then extract air filter.
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© Copyright Mercedes-Benz AG
CCUSHWA
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4- Attach body-in-white foam A2478351600 to cutout at body-in-white.
If necessary, fix part in place with light pressure.
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© Copyright Mercedes-Benz AG
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© Copyright Mercedes-Benz AG
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5- Attach foam mat A2478351400 to previously cleaned part of body-in-white.
Ensure that hole of foam mat is over the hole in the body-in-white.
6- Attach sealing frame A2478351800 along edge as shown in picture. Ensure that the plastic strip is inserted flush
with the offset in the previously attached foam mat.
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© Copyright Mercedes-Benz AG
CCUSHWA
Page 5 / 14
7- Attach sealing frame A2478351700 as shown in the picture. Take care here as the strip should be attached flush to
the foam strip
positioned lengthwise and must run vertically on the body-in-white downward in the direction of the seam.
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© Copyright Mercedes-Benz AG
CCUSHWA
Page 6 / 14
8- Attach sealing frame A2478351900 as shown in the picture. Ensure that the foam strip must run along the seam
and must be curved outward along the running direction at the end. (As a guide, the curvature should run so that
there is a space of approx. 1 cm between the foam strip and the threaded hole). Alternatively, if the corresponding foam in the right picture is present, place the sealing frame A2478351900 along the foam as shown in the picture.
9- Insert drainage fitting A2478320200. When doing so, ensure that the foam flap is aligned in the direction of the fender as shown in
the picture and does not fold upward during insertion. Insert fitting with light pressure until it audibly engages.
04.07.2024 00:16
© Copyright Mercedes-Benz AG
CCUSHWA
Page 7 / 14
10- Attach sealing frame A2478351500 to water baffle as in the picture and insert inlet sieve A2478300104 (see picture).
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© Copyright Mercedes-Benz AG
CCUSHWA
Page 8 / 14
11- Insert water baffle. When doing so, ensure that sealing frame A2478351600 does not fall out of position. Also ensure that the foam frames A2478351700, A2478351800 and A2478351900 run between the body-in-white and the
water baffle (see picture).
12 - Clean out the water drains of any debris and ensure proper water flow away from the blower area.
13- Reinstallation of water baffle and windshield wiper (see step 1).
Attachments
File
Description
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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 > Air conditioning > Air conditioning > Noise
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC
A2478300104
Housing cover
1
X
A2478351400
Sealing frame
1
X
A2478351500
Sealing frame
1
X
A2478351600
Sealing frame
1
X
A2478351700
Sealing frame
1
X
A2478351800
Sealing frame
1
X
A2478351900
Sealing frame
1
X
A2478320200
Drainage fitting
1
X
Operation numbers/damage codes
Op. no.
Operation text
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© Copyright Mercedes-Benz AG
Time
CCUSHWA
Damage
code
Note
8322136
Blower motor noise
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TSB/Document ID: LI83.10-P-077934
Replacement Service Bulletin Number:
MFR Communication Date: 2024-06-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: VISIBILITY/WIPER
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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