NHTSA ID Number: 11008106
Manufacturer Communication Number: B310122
TSB/Document Date: 2024-09-29
Summary
During inspection and/or diagnosis there is noticeable dirt/grease buildup on the axles near the inner and/or outer CV boots.
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31 01 22_DIAGNOSING FRONT AXLES ISSUES
SIB 31 01 22
DIAGNOSING FRONT AXLES ISSUES
2024-09-24
This Service Information Bulletin (Revision 1) replaces SI B31 01 22 dated February 2022.
What’s New (Specific text highlighted):
Models updated
☐
THIS REPAIR IS MOBILE FRIENDLY
MODEL
F95 (X5 M Sports
Activity Vehicle)
G01 (X3 Sports
Activity Vehicle)
G07 (X7 Sports
Activity Vehicle)
F96 (X6 M Sports
Activity Coupe)
G02 (X4 Sports
Activity Coupe)
U10 (X1 Sports
Activity Vehicle)
F97 (X3 M Sports
Activity Vehicle)
G05 (X5 Sports
Activity Vehicle)
U11 (X2 Sports Activity
Coupe)
F98 (X4 M Sports
Activity Coupe)
G06 (X6 Sports
Activity Coupe)
SITUATION
During inspection and/or diagnosis there is noticeable dirt/grease buildup on the axles near the inner and/or
outer CV boots.
CAUSE
Surface contamination during component assembly. Additionally or over time, under normal operation of the
vehicle, grease builds up on the axle shafts’ CV boots.
CORRECTION
Surface contamination and/or grease build-up is normal. Do not replace the CV boot (inner) or axle
half-shaft (outer).
Only replace a CV boot (inner) or axle half-shaft (outer) under the following circumstances:
There is a crack or tear in the CV boot
There is a clamp missing from the CV boot
The clamps can be easily moved/rotated (outside boot)
There is visible grease slinging onto the components around the CV joint rotation area
PROCEDURE
Inspecting the axle CV bootsCheck for all clamps (Two for each boot)
Check that the clamps are secure to the boot
Clean the boots with a shop rag; if the contamination is dried on, use silicone spray to remove the
contamination for a better inspection (do not use brake cleaner or solvents, which have an aggressive effect
on rubber)
Examine the boots for damage (cuts, tears or punctures)
A. The following are examples of good axles/boots. Do not replace.
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31 01 22_DIAGNOSING FRONT AXLES ISSUES
Example of dirt/contamination from outside
influence (1).
Example of dirt/contamination from outside
influence (1).
Example of dirt/contamination from outside
influence (1).
Or:
B. The following are examples of torn and/or leaking CV boots that require the necessary corresponding
repair to be performed (CV boot/bellows repair kit installation or axle/output shaft replacement)
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Tear in the boot (1).
Tear or cut in the boot (1).
Tear or cut in the boot (1).
The below example is a boot that is dispersing grease around the outer carrier (1).
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PARTS INFORMATION
A repair is necessary, obtain and confirm the part numbers for your specific vehicle by entering the chassis
number in either ETK or AIR which takes into account specific equipment and/or options.
CLAIM INFORMATION
This Service Information Bulletin provides technical, diagnostic, and repair-related information.
Damaged CV boots/bellows and axle/output shafts (front and rear), or other issues caused by outside
influences, are not covered under the BMW limited warranties or program coverage that applies to the
vehicle.
QUESTIONS REGARDING THIS BULLETIN
Technical
inquiries
Warranty inquiries
Parts inquiries
Submit feedback at the top of this bulletin
Please contact the Warranty department by either using the Live Chat that’s
available in the Warranty Documentation Portal or through IDS by selecting
Coverage, Policy, Coding Questions and Mileage Corrections
Submit an IDS ticket to the Parts Department
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TSB/Document ID: B310122
Replacement Service Bulletin Number:
MFR Communication Date: 2024-09-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SUSPENSION
MFR Component System:
MFR Component Subsystem:
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