2024-2026 BMW X5 Taillamp Check Control Message TSB

BMW has released Service Information Bulletin (SIB) 63 07 25 to address an intermittent check control message related to the taillamps in certain 2024-2026 BMW X5 and 230i vehicles. This issue is attributed to a software error within the taillamp control modules.

Symptoms

Owners of affected vehicles may observe an intermittently displayed "check control message(s) for the (brake lights, taillights, side lights, turn indicator, daytime driving lights) taillamps". This message indicates a potential issue with the vehicle's rear lighting system.

Fault Codes / DTCs

When diagnosing the BMW X5 taillamp check control message, technicians may find the following fault codes stored in the vehicle's system:

• 80801E- LED driver: Communication faulty
• 80819E- LED driver: Communication faulty
• 80831E- LED driver: Communication faulty
• 80849E- LED driver: Communication faulty

These codes specifically point to communication issues with the LED drivers within the taillamp system.

Cause of the Issue

The root cause of the intermittent BMW X5 taillamp check control message is identified as a software error. This error affects the RLMAL, RLMAR, RLML, and RLMIR control units, which manage the inner and outer taillamps.

Important Warnings for Owners

BMW has stated that no permanent solution is currently available for this issue. The manufacturer is actively working on a software solution, and Service Information Bulletin (SIB) 63 07 25 will be updated once a permanent fix becomes available. Owners should be aware that any current diagnostic procedures are temporary and aim to clear the message, but the underlying software error persists.

Diagnosis and Interim Procedure

For technicians, the interim procedure outlined in SIB 63 07 25 involves several steps to diagnose and temporarily address the BMW X5 taillamp check control message:

1. Verify Customer Concern: Confirm the presence of the check control message with the customer.
2. Inspect Taillamp Operation: Visually check the functionality of all taillamps.
3. Connect Battery Charger: An approved BMW battery charger must be connected to the vehicle.
4. Connect to ISTA: The vehicle is connected to the ISTA diagnostic system, and a short test is performed.
5. Read Fault Codes: Technicians will read fault codes related to the rear taillamps and follow the associated test plans. This is where codes like 80801E, 80819E, 80831E, and 80849E may be found.
6. Check CCM History: The test plan is followed to review the history of the check control message.
7. Delete Fault Codes: Any stored fault codes are deleted, and the vehicle is allowed to enter sleep mode.
8. Reassess Functionality: The taillamp functionality is reassessed to ensure the message has cleared.
9. Inform Customer: The customer must be informed that a permanent software solution is still under development.

Warranty Information

This repair is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. The repair code associated with this issue is 6321007900, which refers to a "Rear light, side panel incorrect connection/contact." Technicians should refer to SI B01 01 20 or B01 07 20 for proper documentation and claiming procedures.

Mobile and RSU Friendly

This repair is designated as both Mobile Friendly and Remote Software Upgrade (RSU) Friendly, indicating that future software updates to resolve this issue may be deployable remotely or through mobile service appointments.

---

Source: NHTSA ID: 11023252