B120324 Service Bulletin/Repair Instructions

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.

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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

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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.

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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
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