NHTSA Complaint #11700942 — 2016 BMW X5

Because of this water intrusion, the following safety systems have malfunctioned or failed: • ABS and DSC (stability control) warnings • Chassis stabilization warning • Frontal collision and pedestrian warning malfunction • Airbag system warning • Loss of audible warning tones • MOST bus communication failure • Electrical modules intermittently shutting down or throwing codes These failures affect braking, stability control, crash avoidance, and driver alerts, creating a significant safety risk while driving. This is not normal wear or maintenance. Many BMW owners have reported the same issue: clogged or poorly designed sunroof drains that route water directly into areas containing critical electronics. Once water reaches these modules, it causes electrical shorts and safety system failures that require expensive repairs. BMW dealerships typically diagnose this as “water damage,” but the location of the drains and the placement of the electronics indicate a design flaw that allows a simple drain issue to disable major safety systems. I am filing this complaint because the water intrusion should not be able to cause total failure of ABS, DSC, collision warning, and airbag-related systems. This is a safety-related design defect, not wear and tear. I request NHTSA review and investigate BMW sunroof drain failures and their impact on essential vehicle safety functions.