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33 01 26_REAR AXLE WHEEL BEARING COMPLAINTS

SIB 33 01 26
REAR AXLE WHEEL BEARING COMPLAINTS
2026-03-02
This Service Information Bulletin (Revision 01) replaces SI B33 01 26 dated February 2026.
What’s New (Specific text highlighted):
Parts Information

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THIS REPAIR IS MOBILE FRIENDLY
THIS REPAIR IS REMOTE SOFTWARE UPGRADE (RSU) FRIENDLY

MODEL
E-Series
U10
U11

Model Description
X2 Sports Activity Coupe
X1 Sports Activity Vehicle

Production Date
September 2022 to April 3, 2025
November 2023 to April 3, 2025

SITUATION
1. Noise complaint:
Humming or clicking type noise in the speed range of 15 – 65 mph can be heard from the rear axle. See
attached video “V33 01 26 Humming” and “V33 02 26 Clicking”
The noise may be amplified depending on road speed.
Or
2. Fault memory entry:
Customer has Dynamic Stability Control malfunction indicator lamp and/or related Check Control Message.
The following fault codes are found in the Integrated Brake module fault memory:
4809B7: Wheel speed sensor - rear left - tooth missing
4809C2: Wheel speed sensor - rear right - tooth missing
480AB4: Wheel speed sensor - rear right – noise monitoring
480AAD: Wheel speed sensor - rear left – noise monitoring

CAUSE
1. Noise complaint: Insufficient protection allows water to ingress directly into the wheel bearing which can also lead to
corrosion of the wheel bearing inner race.

And / or:

2. Fault memory entry: Foreign particles/corrosion at the interface to the wheel speed sensor.

CORRECTION
Replace both rear axle wheel bearings.

PROCEDURE
1. Noise complaint:
Replace both rear axle wheel bearings as per REP 33 41 180 Replacing the rear wheel bearing.
2. Fault memory entry:
Perform vehicle test and confirm Integrated Brake system fault memory entry of one of the listed fault codes:

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33 01 26_REAR AXLE WHEEL BEARING COMPLAINTS

4809B7: Wheel speed sensor - rear left - tooth missing
4809C2: Wheel speed sensor - rear right - tooth missing
480AB4: Wheel speed sensor - rear right – noise monitoring
480AAD: Wheel speed sensor - rear left – noise monitoring
With fault code verified, replace both rear axle wheel bearings as per REP 33 41 180 Replacing the rear wheel
bearing.

PARTS INFORMATION
To determine the part numbers that apply to the specific vehicle being repaired, enter the VIN / Chassis
number into either ETK or AIR, this will consider the specific equipment and/or options that are fitted to the
vehicle.
Part Number
31 20 8 882 498
31 10 6 894 168
34 20 6 867 544
34 20 6 850 560
31 20 6 795 249
83 12 2 296 187

Description
Wheel hub with bearing
Multi-purpose bolt (M12x1.25x33ZNS3)
Torx screw with washer (M12x1.5x43 ZNS3)
Hex bolt (M8x22)
Collar screw with spring (M16x1.5x72-8.8)
Brake pad paste

Quantity
2
8
4
4
2
1

Additionally, other materials and small parts that are not specified above, such as fluids, lubricants (in
sublet), one-time use screws, nuts, and seals, which must be replaced or installed (according to the ISTA
repair instructions/ETK/AIR), are to be selected from the Electronic Parts Catalog, and/or other approved
BMW Group’s resources according to the respective vehicle type. Invoiced these items separately under the
Repair Code listed in this bulletin.

CLAIM INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks,
or the BMW Certified Pre-Owned Program as described below.

Repair Codes:

3341033900
Or:

Rear wheel bearing Unpleasant noises (1)

3341031500

Rear wheel bearing Permanent malfunction (Related Fault
Codes Stored) (2)

Obtain the flat rate unit (FRU) allowances for the following that applies.
Labor Operation
00 00 006
Or:
00 00 556
And:

Description
Carrying out vehicle test (Main work)

Labor Allowance
As applicable

Carrying out vehicle test (Plusposition work)

As applicable

Supporting voltage of the vehicle electrical system /
recharging vehicle battery

As applicable

61 00 006*

Carrying out vehicle diagnosis, ABL (Work time) including
confirming the source of the noise is from the rear
bearings

WT FRU

Or:
00 58 500*
And:

Diagnosis Worktime Flat Rate

2 FRU

33 41 681

Replacing both bearings for rear wheels (including
removing and installing the rear brake pads and discs)

As applicable

61 21 528
And, as needed:

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If you are using a Main labor code for another repair, use the Plus code labor operation 00 00 556 instead of
00 00 006, or exclude them (including 61 21 528) when the Vehicle Test is included in another repair.
(*) Based on which one applies to your center, please refer to SI B01 01 20 or B01 07 20 for the applicable procedure for
documenting, claiming, and explaining, on the RO and in the claim comments, your diagnosis work time (WT), job/repair
work time (WT), and the vehicle repairs your center performed, unless otherwise required by State law.

BMW Group’s AIR Application Resource for Flat Rate Labor Operation Codes
To obtain the corresponding flat rate unit (FRU) allowance information from the BMW Group AIR application
resource, start by entering the Chassis Number (last seven (7) characters of the VIN), and click on the
“Search” icon. If the “Vehicle Selection” window displays two or more model possible vehicle choices, select
the applicable Model, or enter the full VIN (17 characters) instead to proceed. Click on the “Flat Rate Units”
button and enter a flat rate labor operation code number “without spaces” in the field to the right, click on the
“Search” icon to display the corresponding listing of “Flat rate unit group details” that are available and their
corresponding FRU allowances.
Maintenance Program - BMW Ultimate Care + Full (With Brake Pad Coverage)
If the vehicle has an active BMW Ultimate Care + Full maintenance program with brake pad coverage and
the Rear Brake Pad Service task shows Recommended, Due or Bundling Eligible (BE), then:
Perform the Rear Brake Pad Service task in conjunction with the above repair, and
Reset the CBS data
Only submit and claim for the brake pad service task-related parts (No labor) under the BMW Maintenance
Program Brake Repair Code that applies.

FEEDBACK REGARDING THIS BULLETIN
Technical Feedback
Warranty Feedback
Parts Feedback

To submit feedback for the technical topic of this bulletin: Submit your
feedback in the rating box at the top of this bulletin
To submit feedback for the CLAIMS section of this bulletin: Submit an IDS
ticket to the Warranty Department, or use the chat available in the
Warranty Documentation Portal
To submit feedback for the PARTS section of this bulletin: Submit an IDS
ticket to the Parts Department

Supporting Materials
Videos
33 01 26
33 02 26

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