2021-2022 BMW 4 Series Wet Trunk Carpet TSB

Symptoms

Owners of certain 2021-2022 BMW 4 Series vehicles, including the 430i, M4, and M440i, may notice that the trunk floor carpet is wet. This wetness is primarily observed on the left side of the trunk area. This issue is detailed in a manufacturer communication, specifically TSB NHTSA ID 10211856.

Diagnosis

This TSB highlights a common complaint where water intrusion leads to a wet trunk floor carpet. There are no specific diagnostic trouble codes (DTCs) associated with this particular issue, as it is a physical observation of water. Technicians would typically inspect the trunk area for signs of water entry to determine the source of the leak.

Repair Procedure Summary

While the specific repair steps are not detailed in the summary provided, this 2022 BMW 430i manufacturer_communication indicates that BMW has identified a solution for the wet trunk carpet problem. Generally, repairs for water intrusion involve identifying and sealing the entry point, which could include inspecting body seams, tail light seals, or other components in the trunk area. Owners experiencing this issue should have their vehicle inspected by an authorized BMW service center.

Owner Action

If you own a 2021-2022 BMW 4 Series and have observed a wet trunk floor carpet, particularly on the left side, it is recommended to contact your local authorized BMW dealership. Reference TSB NHTSA ID 10211856 when discussing the issue. Since this is a manufacturer communication, the repair may be covered under warranty, depending on your vehicle's age and mileage. This 2022 BMW 430i manufacturer_communication helps ensure proper diagnosis and repair.

Source: NHTSA ID 10211856