NHTSA ID Number: 11020911
Manufacturer Communication Number: B511223
TSB/Document Date: 2025-07-28
Summary
After carrying out the vehicle test, one or more of the stored faults indicate that the operation of the front bottom active air flap is obstructed or blocked.
7/17/25, 5:32 AM
51 12 23_LOWER ACTIVE AIR FLAP ASSY VEH-SPECIFIC CUSTOMER SATISFACTION INITIATIVE 4/50
SIB 51 12 23
LOWER ACTIVE AIR FLAP ASSY VEH-SPECIFIC CUSTOMER
SATISFACTION INITIATIVE 4/50
2025-07-02
This Service Information Bulletin (Revision 03) replaces SI B51 12 23 dated April 2025.
What’s New:
Model added
☐
☐
THIS REPAIR IS MOBILE FRIENDLY
THIS REPAIR IS REMOTE SOFTWARE UPGRADE (RSU) FRIENDLY
MODEL
F44 (2 Series Gran
Coupe)
G05 (X5 Sports
Activity Vehicle)
G20 (3 Series Sedan)
G22 (4 Series Coupe)
G30 (5 Series Sedan)
G42 (2 Series Coupe)
G06 (X6 Sports
Activity coupe)
G23 (4 Series
Convertible)
G07 (X7 Sports
Activity Vehicle)
G26 (4 Series Gran
Coupe)
SITUATION
A vehicle listed above may arrive with a Check Control Message (CCM), and/or malfunction indicator lamp
(MIL) illuminated.
After carrying out the vehicle test, one or more of the stored faults indicate that the operation of the front
bottom active air flap is obstructed or blocked.
CORRECTION
Thoroughly inspect the front bottom air flap, when applicable, remove any contamination that is found
caught in and between the bottom air flaps (aka “blinds”) and/or the housing.
Front Lower Active Air Flap Assembly Vehicle-Specific Customer Satisfaction Initiative 4/50
For the eligible listed vehicles that qualify, and
for the issue described in the photo (item # 1
shown):
With the release of this Service Information
Bulletin under this Customer Satisfaction
Initiative, only for applicable repairs going
forward on the models listed above, BMW
of
North America, LLC (BMW
NA) will cover for
the first 4 Years / 50,000-miles, from the
vehicle’s original first in-service / delivery date.
When the Procedure outlined below is used to identify
and remove contamination that is found obstructing or
blocking normal operation of the front lower/bottom
active air flap assembly
Note: This is NOT a notice of a Recall or Service Action.
Damage and/or functional issues caused by outside influences are not covered under the BMW
limited
warranties.
Copyright ©2025 BMW
of North America, Inc.
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51 12 23_LOWER ACTIVE AIR FLAP ASSY VEH-SPECIFIC CUSTOMER SATISFACTION INITIATIVE 4/50
The coverage for this initiative’s Procedure is subject to the same vehicle eligibility requirements and
limitations criteria that applies to the BMW
New Vehicle Limited Warranty for Passenger Cars and Light
Trucks.
PROCEDURE
When an applicable vehicle arrives at your center with a Front Active Flap-related Check Control Message,
and/or malfunction indicator lamp:
1. Connect a BMW
approved battery charger, an ICOM, and perform a vehicle readout using ISTA.
2. Are there any radiator blind (flap) mechanical operation-related faults stored in the fault memory?
3. If “YES” (select), then follow the test module’s instructions to visually inspect the bottom air flap
(blind) for one, or more of the following issues that could be preventing normal flap/blind operation:
Freedom of movement
Contamination
Icing
Broken linkage**
Detached blind slats**
1. When contamination is found to be the reason why the bottom active air flap (blind) operation is
restricted, provide a photo document what is found in the WarrantyAPP, and carefully remove the
contamination (Removal of the front bumper cover is not necessary).
2. Delete the fault memory, carry out the test module’s functional check again to verify the repair, or
if physically damaged** Front Active Flaps and/or Assembly are found during “Step 3,” this Service
Information Bulletin no longer applies.
Always connect a BMW
-approved battery charger/power supply (SI B04 23 10).
Note: If “NO” contamination is found in the bottom air flap, this SIB does not pertain to the vehicle.
Continue with your diagnosis and refer to AIR for other Service Information Bulletins that may
apply.
**Physically damaged Front Active Flaps and/or Assembly (Detached blind slats, linkage/broken housing,
etc.) that are determined to be caused by an outside influence and are not covered under the BMW
limited
warranties.
Please refer to SI B01 03 25, B01 07 25, and/or B01 08 25 for other specific vehicle coverage and/or related
customer initiative work that may be available.
PARTS INFORMATION
No part replacements apply to the Procedure.
CLAIM INFORMATION
This Service Information Bulletin provides technical, diagnosis, and repair-related information.
Damage and/or functional issues caused by outside influences are not covered under the BMW
limited
warranties.
Front Lower Active Air Flap Assembly Vehicle-Specific Customer Satisfaction Initiative
For the models listed above that qualify, this Customer Satisfaction Initiative is available for eligible repairs
that were performed on, and after June 1, 2023. Similar repairs performed prior to this date, including
reimbursement requests, are not eligible.
Copyright ©2025 BMW
of North America, Inc.
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51 12 23_LOWER ACTIVE AIR FLAP ASSY VEH-SPECIFIC CUSTOMER SATISFACTION INITIATIVE 4/50
This Customer Satisfaction Initiative applies to the eligible US-specification BMW
vehicles that are
registered, operated, and have their covered repair performed by an authorized BMW
center in the United
States (including Puerto Rico).
This Customer Satisfaction Initiative procedure is covered for the first 4 Years (48 months) / 50,000-miles,
whichever occurs first, from the vehicle’s original first in-service / delivery date.
Repair Code:
85800210NA
Front Lower Active Air Flap Assembly- Customer
Satisfaction Initiative
Obtain the flat rate unit (FRU) allowances for the following that applies.
Labor Operation
00 00 006
Description
Carrying out vehicle test (Main work)
Labor Allowance
As applicable
Carrying out vehicle test (Pluspostion work)
As applicable
Supporting voltage of the vehicle electrical system /
recharging vehicle battery
As applicable
Carrying out vehicle diagnosis, ABL (Work time) (All
centers) (Includes checking radiator blind/flap, removing
any contamination, deleting the fault memory, and
carrying out the functional check again)
2 FRU
Removing and installing/replacing underbody protection
(front) together with 61 00 006 (For access to the rear
lower/bottom flap assembly area when needed)
As applicable
Or:
00 00 556
And:
61 21 528
And:
61 00 006*
When, necessary:
51 47 500
And
00 58 999
Lump Sum Payment for Picture Documentation
1 FRU
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 (including 61 21 528) when the Vehicle Test is included in another repair.
Claim Comments
This repair procedure has been developed as a customer goodwill satisfaction measure. Please reference
Service Information Bulletin number B51 12 23, and that this repair was performed is a Customer
Satisfaction Initiative, on the RO and in the claim comments.
Other Repairs (Other Radiator Bottom/lower Blind/Flap CCMs, Faults Codes, Issues)
If after performing the ISTA diagnostics, related test plans, and/or visual inspection, a defect in material and
workmanship is verified and confirmed, claim qualifying and eligible work with the applicable Repair Code
and the labor operations in AIR, or as outlined in any applicable Service Information Bulletins (including the
diagnosis that applies*).
(*) 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![]()
NorthOperation
America, Inc.
BMW
Group’s AIR ApplicationCopyright
Resource©2025
for Flat
RateofLabor
Codes
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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.
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
Copyright ©2025 BMW
of North America, Inc.
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Copyright ©2025 BMW
of North America, Inc.
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TSB/Document ID: B511223
Replacement Service Bulletin Number:
MFR Communication Date: 2025-07-02
MFR Internal Campaign ID/Software Version: 85800210NA
Communication Type: Warranty Program/Extension
NHTSA Components: STRUCTURE:BODY
MFR Component System:
MFR Component Subsystem:
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