2025 BMW X3, 2 Series Ambient Lighting Malfunction TSB
BMW has released Service Information Bulletin SIB 63 09 25 to address issues with interior ambient lighting in 2025 BMW X3 and 2 Series Gran Coupe vehicles. Owners may experience non-functional lighting strips after a software update, often indicated by fault codes such as 804A38, 804A39, 804A3E…
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- BMW 230i
- 2025
BMW has released Service Information Bulletin SIB 63 09 25 (Revision 2, dated March 18, 2026) to address an issue where the interior ambient lighting may malfunction in certain 2025 BMW X3 and 2 Series Gran Coupe vehicles. This bulletin supersedes the previous SI B63 09 25 dated December 2025. The repair is classified as both mobile-friendly and remote software upgrade (RSU) friendly.
This technical service bulletin specifically applies to 2025 BMW 2 Series Gran Coupe (F74) models equipped with option codes 43U (Illuminated Aluminum Graphite Trim) or 43Z (M Illuminated Aluminum Hexacube Matte Trim), and 2025 BMW X3 Sports Activity Vehicle (G45) models with option code 4UR (Ambient Lighting).
Symptoms
Owners may notice that some of the interior ambient lighting strips no longer function properly after the vehicle has been programmed via ISTA/RSU to software version 25-07-5xx or higher. This indicates a BMW ambient lighting malfunction.
Fault Codes / DTCs
Technicians may find several possible fault code entries related to this issue. These codes all indicate an "Interior lights layering (IL-LIN_3): versioning incorrect" condition, specifying different LIN slave modules:
For F74 (2 Series Gran Coupe):
- 804A38: LIN slave 5
- 804A39: LIN slave 6
- 804A3E: LIN slave 11
For G45 (X3 Sports Activity Vehicle):
- 804A34: LIN slave 1
- 804A35: LIN slave 2
- 804A36: LIN slave 3
- 804A37: LIN slave 4
- 804A38: LIN slave 5
- 804A3A: LIN slave 7
- 804A47: LIN slave 8
- 804A48: LIN slave 9
It is important to note that these fault codes may or may not be present when diagnosing the issue.
Cause
The root cause of the ambient lighting malfunction is identified as unfavorable logic within the LED control unit hub. This software-related issue prevents the lighting strips from operating correctly after certain programming updates.
Repair Procedure Summary
The correction for this BMW ambient lighting malfunction involves following a test plan to properly encode the LED control unit hub. The procedure outlined in SIB 63 09 25 is as follows:
- Determine I-level: First, the vehicle's current I-level must be determined using either AIR or the Key Reader/AWP (Aftersales Workplace) applications.
- I-level Check:
- If the I-level is 26-03-530 or higher, standard diagnostic procedures should be followed.
- If the I-level is lower than 26-03-530, the vehicle needs to be programmed.
- Programming: Program the vehicle to I-level 26-03-530 or higher using ISTA 4.58.2x (released on March 3, 2026) or a newer version. The programming steps include:
- Connecting a battery charger to the vehicle.
- Connecting the programming system (ISTA 4) to the vehicle.
- Determining the necessary measures plan.
- Accepting and fully working through the measures plan for all control units requiring programming/encoding.
- Following any rework lists.
- Performing a vehicle test and deleting any fault memory if required, depending on the rework list.
- Verification: After programming is complete, verify that all individual ambient lighting elements are working and displaying properly.
Important Warnings
- Battery Charger: Always connect a BMW-approved battery charger/power supply during programming. Refer to SI B04 23 10 for more information on this requirement.
- Automatic Reprogramming: ISTA will automatically reprogram and code all programmable control modules that do not have the latest software during this process.
Required Tools or Parts
No new parts are required to perform this repair. The solution is entirely software-based, requiring the use of the ISTA diagnostic and programming system.
Claim Information
For warranty claims related to this issue, the repair code is 6331251500, described as "Light module/LED module, multicoloured interior ambient lighting Permanent malfunction." Applicable labor operations include 00 00 006 (carrying out vehicle test - main work), 00 00 556 (carrying out vehicle test - plusposition), 61 21 528 (supporting voltage of the vehicle electrical system), and 61 00 730 (program/encode control unit(s), includes deleting the fault memory).
NHTSA ID: 11030309
Galeri
2 görsel
What BMW X3 owners report
Counted from the records in our database across 23 model years.
- 2,295
- Owner complaints
- 64
- Recalls
- 1,126
- Service bulletins
- 114
- Crashes reported
- 133
- Fires reported
- 118
- Injuries reported
The 2025 model year
39 complaints, the 20th most of 23 model years on file. Owners reported 4 crashes, 1 fire and 0 injuries for this year, which also has 9 recalls on file.
Exterior Lighting, the system this article covers, accounts for 60 of 2,295 complaints (3%), including 3 for 2025.
Complaints by model year
| 2004 | 138 | |
|---|---|---|
| 2006 | 143 | |
| 2007 | 258 | |
| 2008 | 122 | |
| 2011 | 126 | |
| 2013 | 226 | |
| 2019 | 171 | |
| 2020 | 110 | |
| 2021 | 113 | |
| 2025 | 39 |
Most-reported systems
- Engine — 494
- Electrical System — 450
- Air Bags — 404
- Power Train — 247
- Seats — 218
Latest recalls for the 2025 model year
- 26V524000 — Steering (Aug 2026)
- 25V857000 — Steering (Dec 2025)
- 25V247000 — Service Brakes, Hydraulic (Apr 2025)
Recent owner reports about exterior lighting
The headlights have a shadow half way down the windshield making it very difficult to see at night. We don't feel safe driving when it is dark out. We took it to the dealer the end of January they saw what we were talking about.
Read owner complaints →When using the headlights there is a shadow across the top half of our windshield. The dealership was not able to fix, they acknowledged they could see what we are referring to. They are going to file a report with BMW.
Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.
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