NHTSA ID Number: 10240155
Manufacturer Communication Number: LI42.10-P-076753
TSB/Document Date: 2023-08-02
Summary
Complaint Brake squeal Cause Frictional vibrations. There is no effect to braking capability. Remedy >> Refer to LI42.10-P-063502. If bedding in the brakes does not remedy the issue: a) If the noises are coming from the front axle => Affix linings with biadhesive film (see attachments for front axle) 1. Remove brake linings of front axle 2. Cleaning all contact points on brake lining and brake caliper/carrier
3. Apply an adhesive film to the backplate of the piston-side brake lining (only in the area of the center piston) 4. Position and affix brake pad foil as per the attachment (clean bonding surface) 5. After installing the brake linings, actuate the brake for 30 seconds b) If the noises are coming from the rear axle => Grease the lining as per the specification (see attachments for rear axle) 1. Remove brake pads of rear axle 2. Cleaning all contact points on brake lining and brake caliper/carrier 3. Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating paste A001 989 87 51 4. Be absolutely certain to not allow paste between friction surfaces of the pad and disc! If no remedy is possible with these measures, please create a TIPS case.
Brake squealing from the steel braking system (code B06)
Topic number
LI42.10-P-076753
Version
1
Function group
42.10 - Service brake
Date
7/27/23
Validity
232.450, 232.480, 232.481
Reason for change
Complaint
Brake squeal
Cause
Frictional vibrations. There is no effect to braking capability.
Remedy
>> Refer to LI42.10-P-063502.
If bedding in the brakes does not remedy the issue:
a) If the noises are coming from the front axle => Affix linings with biadhesive film (see attachments for front axle)
1.
2.
3.
4.
5.
Remove brake linings of front axle
Cleaning all contact points on brake lining and brake caliper/carrier
Apply an adhesive film to the backplate of the piston-side brake lining (only in the area of the center piston)
Position and affix brake pad foil as per the attachment (clean bonding surface)
After installing the brake linings, actuate the brake for 30 seconds
b) If the noises are coming from the rear axle => Grease the lining as per the specification (see attachments for rear
axle)
1.
2.
3.
4.
Remove brake pads of rear axle
Cleaning all contact points on brake lining and brake caliper/carrier
Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating
paste A001 989 87 51
Be absolutely certain to not allow paste between friction surfaces of the pad and disc!
If no remedy is possible with these measures, please create a TIPS case.
Attachments
File
Description
Position Klebefolie R232.png
Front axle lining
27.07.2023 16:43:07
© Copyright Mercedes-Benz AG
EDWMARK
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Bereich Befettung (rot) R232.png
Rear axle lining
WIS-References
Document number
Title
Note
AR42.10-P-1610SLY
Remove/check/install front axle brake Model 232 with code B06 (Brake capads
liper painted silver) except code B07
(AMG - ceramic brake system) Model 232 with code U69 (Brake caliper painted yellow) except code B07
(AMG - ceramic brake system) Model 232 with code U70 (Brake caliper
painted red) except code B07 (AMG ceramic brake system)
AR42.10-P-1710SLY
Remove/check/install brake linings of Model 232 with code B06 (Brake carear axle
liper painted silver) except code B07
(AMG - ceramic brake system) Model 232 with code U69 (Brake caliper painted yellow) except code B07
(AMG - ceramic brake system) Model 232 with code U70 (Brake caliper
painted red) except code B07 (AMG ceramic brake system)
SI00.00-P-0086A
Guidelines for queries relating to technical complaints
Symptoms
Chassis/suspension > Brake system > Service brake > Noises > Squeals
Parts
27.07.2023 16:43:07
© Copyright Mercedes-Benz AG
EDWMARK
Page 2 / 3
Part number
ES1 ES2 Designation
Quantity Note
A 190 423 32 00
Brakepad foil
n.B.
A 000 989 8751
Copper paste
n.B.
EPC
Adjust during installation
X
X
Operation numbers/damage codes
Op. no.
Operation text
401590
REMOVE/INSTALL WHEELS (2)
27.07.2023 16:43:07
© Copyright Mercedes-Benz AG
Time
Damage
code
Note
4220136
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Page 3 / 3
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Ideal for hydraulic and disc brakes
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
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TSB/Document ID: LI42.10-P-076753
Replacement Service Bulletin Number:
MFR Communication Date: 2023-07-28
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES, HYDRAULIC
MFR Component System:
MFR Component Subsystem:
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