2024 BMW X1 / 5 Series Taillamp Condensation SIB 63 10 23

Owners of 2024 BMW X1 (U11) and 5 Series Sedan (G60) models may notice moisture or condensation inside their vehicle's rear taillamps. BMW Service Information Bulletin SIB 63 10 23, issued on August 19, 2024, provides guidance to technicians on how to diagnose and address this condition. This bulletin is Revision 1 and replaces a previous version, SI B63 10 23, dated August 2023. A new model has been added to the scope of this bulletin.

Symptoms of Taillamp Condensation

The primary symptom is visible condensation on the inner surface of one or both of the vehicle's rear taillamps. This can affect either the inner or outer sections of the taillamp assembly.

Understanding the Cause

BMW identifies two main causes for water or moisture inside the taillamps, and distinguishing between them is crucial for proper resolution:

1. Normal Thermal/Environmental Conditions: Condensation can form due to natural temperature and humidity fluctuations. This is not considered a defect and does not require repair. The taillamps are designed to vent this moisture naturally.
2. Defective Taillamp Housing: If water or moisture is present due to a physical issue with the taillamp housing itself, such as a leak or damage, this is considered a defect and warrants repair.

Diagnosis and Repair Procedure

Technicians are instructed to first determine the cause of the moisture. If the BMW X1 taillamp condensation is due to normal environmental conditions, no correction is necessary. The taillamps are designed to dissipate this type of condensation through their venting system. BMW specifies that the taillamps should dissipate the condensation through venting within 24 hours, provided the vehicle is sitting in temperatures between 68 and 77 degrees Fahrenheit.

If the taillamps do not vent or dry within the described timeframe, a more thorough inspection is required. Technicians must inspect the taillamp for leaks or damage. If a defect is found, the taillamp should be replaced as needed to resolve the issue.

Parts and Claim Information

Replacement parts are only required in situations where a physical issue with the taillamp assemblies or related components is identified as the cause of excessive water entry. In such cases, the vehicle should be repaired as necessary based on the specific issue found. To determine the correct part number for a specific vehicle, technicians must enter the VIN/chassis number into either ETK or AIR systems, which will identify the appropriate equipment and options.

This Service Information Bulletin SIB 63 10 23 provides technical, diagnosis, and repair-related information. Repairs addressing a verified defect in materials and/or workmanship are covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Claims must be submitted according to established warranty policy and procedures. Technicians are advised to refer to AIR for corresponding Repair Codes, flat rate labor operation codes (including diagnosis), and applicable flat rate unit (FRU) allowances. Only one Main labor operation code can be claimed per repair visit. For detailed procedures on documenting and claiming diagnosis and repair work time, technicians should refer to SI B01 01 20 or SI B01 07 20.

Important Considerations for Owners

If you observe BMW X1 taillamp condensation, it's important to understand that it may be a normal condition that will resolve itself. No correction is needed if the moisture is caused by natural thermal and environmental factors, as the taillamps are designed to vent this out. However, if the condensation persists beyond 24 hours in appropriate temperatures, or if there's visible water/moisture indicating a leak, then a repair may be necessary. This repair is noted as