2/16/26, 5:41 AM

12 03 24_B48P AND B48R ENGINE: FC 034AEF EXHAUST COLD START, NOT CONTROLLABLE

SIB 12 03 24
B48P AND B48R ENGINE: FC 034AEF EXHAUST COLD START, NOT CONTROLLABLE
2026-02-12
This Service Information Bulletin (Revision 6) replaces SI B12 03 24 dated February 2026.
What’s New:
Procedure

☐
☐

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

MODEL
U11 X1 Sports Activity Vehicle
U10 X2 Sports Activity Vehicle

SITUATION
The Engine Malfunction Warning is illuminated, and the following fault code is stored in the DMEFC 034AEF Exhaust Cold Start, Not Controllable

CAUSE
A DME calibration error.

PROCEDURE

Online Patch Activation with ISTA 4.57.3x released on January 26th,2026.
ISTA 4.57.3x with installed service data package is required for the programming/encoding.
Vehicle I-level must be 25-11-560 or higher prior to starting the programming. This prevents possible
WAVE failures.
This patch should only be used for FC 034AEF Exhaust Cold Start, Not Controllable
Model
U11, U10

Target Integration level
U006-26-03-527

Note that ISTA will automatically reprogram and code all programmable control modules that do not have
the latest software.
Always connect a BMW-approved battery charger/power supply (SI B04 23 10) when performing
programming.
For information on programming and coding with ISTA, refer to DealerSpeed / TIS / Technical
Documentation / Diagnostics and Programming / Programming Documentation.
Online patch activation with ISTA

Attention! With ISTA 4.57.3x, the I-level U006-26-03-527 is expected to be activated online from
02.10.2026 and offered for download within the programming session.

Attention! After downloading online i-level you will see target i-level change to U006-26-03-527.
© 2026 BMW OF NORTH AMERICA, LLC. ALL RIGHTS RESERVED
about:blank

1/5

2/16/26, 5:41 AM

12 03 24_B48P AND B48R ENGINE: FC 034AEF EXHAUST COLD START, NOT CONTROLLABLE

See compass item 84820 ISTA: How does programming work with Online I level software?
Connect the battery charger to the vehicle
Connect the programming system to the vehicle (ISTA 4)
Determine the measures plan

Attention! You will be prompted with the below request you must choose “Activate online integration
level”. This will only appear until the future release of ISTA 4.58.2x. In the event you must program the
vehicle for another reason use the “Continue” tab and ISTA will use the latest I-level prior to the patch.

Attention! In some cases, you may not receive the prompt to activate the online I-level. In these
cases, you will need to manually select the DME for programming and coding. Once you select “execute
measures plan” the prompt to activate the online level will appear. If you are still having issues with
activating the online I-level, you will need to check/refresh your ISTA login.

Accept or work through the entire measures plan with the control units to be programmed/encoded
and, if necessary, activated
Follow the rework list.
Depending on the rework list, carry out a vehicle test and delete the fault memory, if required
The programming must be carried out using the I levels given above or a later one! Please observe
the information regarding programming in the workshop system and the corresponding notes in the user
documentation.

CLAIM INFORMATION
© 2026 BMW OF NORTH AMERICA, LLC. ALL RIGHTS RESERVED
about:blank

2/5

2/16/26, 5:41 AM

12 03 24_B48P AND B48R ENGINE: FC 034AEF EXHAUST COLD START, NOT CONTROLLABLE

Vehicle Programming and Encoding
During this workshop visit, the affected vehicle may also show one or more programming and encoding Technical Campaign
repairs open, the programming and encoding procedure may only be invoiced one time.
Select one of these open Technical Campaigns to perform and submit for updating the vehicle to the required Ilevel, or higher when applicable (Includes labor operation codes 00 00 006/556, 61 21 528 and 61 00 730).
Please be sure to also perform any additional before and/or after work (including attaching labels) as required by
the open campaigns on the vehicle. Close any other open programming and encoding Campaign repairs as outlined
in the corresponding Service Information Bulletin.

Only when the above does not apply, the BMW software solution is then covered under the terms of the
BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks (Including CA 7/70, Federal 8/80),
or the BMW Certified Pre-Owned Program as described below.
Repair Code:

1136019900

Camshaft adjusting unit (VANOS) Fault code stored in
diagnosis fault code memory (no warning lamp)

Obtain the flat rate unit (FRU) allowances for the following that applies.

Labor
Operation
00 00 006

Description

Labor Allowance

Carrying out vehicle test (Main work)

As applicable

Carrying out vehicle test (Plusposition work)

As applicable

Supporting voltage of the vehicle electrical system /
recharging vehicle battery

As applicable

Carrying out vehicle diagnosis, ABL (Work time)

WT FRU

Diagnosis Worktime Flat Rate

2 FRU

Program/encode control unit(s), includes deleting the fault
memory

As applicable

Or:
00 00 556
And:
61 21 528
And, as needed:
61 00 006*
Or:
00 58 500*
And:
61 00 730

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.
Work time labor operation codes 61 00 006 and 00 58 500 are not considered Main labor operations.
Vehicle Programming and Encoding – Additional Work (RO and Claim Comments Required)
This procedure automatically reprograms and encodes any vehicle control modules that do not have the latest software Ilevel.

If one or more control modules fail during the reprogramming procedure, claim the required consequential
repair work procedures to address this issue (including performing the IRAP Control Unit Recovery first as
required, refer to the SIB in AIR) under the Repair Code in this bulletin together with the corresponding labor
operation codes and their flat rate unit (FRU) allowance(s), including the diagnosis* that applies.
Please explain the additional work procedures that were performed (The why and the what) on the repair order and in the
claim comments.
© 2026 BMW OF NORTH AMERICA, LLC. ALL RIGHTS RESERVED
about:blank

3/5

2/16/26, 5:41 AM

12 03 24_B48P AND B48R ENGINE: FC 034AEF EXHAUST COLD START, NOT CONTROLLABLE

For covered repairs that address control module failures that occurred prior to performing this
reprogramming procedure, claim this work with the appliable Repair Code listed in AIR together with the
corresponding labor operation codes and their flat rate unit (FRU) allowance(s), 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 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 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

© 2026 BMW OF NORTH AMERICA, LLC. ALL RIGHTS RESERVED
about:blank

4/5

2/16/26, 5:41 AM

12 03 24_B48P AND B48R ENGINE: FC 034AEF EXHAUST COLD START, NOT CONTROLLABLE

© 2026 BMW OF NORTH AMERICA, LLC. ALL RIGHTS RESERVED
about:blank

5/5