Electrical System owner reports: BMW X3 years in the records

The records describe a possible crash, fire, injury, or loss of control.

“AUTOMATIC BRAKING SPONTANEOUSLY ACTIVATED WITHOUT CAUSE. HAPPENED 2 TIMES. MOST RECENT INCIDENT CAUSED INJURIES TO THE DRIVER AND ALMOST CAUSED A SEVERE ACCIDENT. THIS IS A FULL STOP FROM APPROXIMATELY 40 MPH”

The records describe a possible crash, fire, injury, or loss of control.

“Our 2019 BMW X3 M40i shows "EMERGENCY CALL SYSTEM MALFUNCTION" which means the "SOS" system, which is crucial for post-collision response, fails. Erhardt BMW in Bloomfield Hills, Michigan confirmed water leakage due to defective sealing around the roof-mounted shark fin antenna damaged the Telematics Control Box (TCB) and now requires replacement. The estimated cost is $3,600. Some quick research revealed this to be a repeated problem with my vehicle. BMW has acknowledged it as a defect in 2017-2023 model year BMW M440i, M550i, X1, X3, X4, X5, X6, X7, 330, 340i and 750i vehicles and fix it at no cost, but only for citizens of [XXX] , as reported by [XXX] of [XXX] . For details, see: [XXX] . This seems unfair to non [XXX] residents like me [XXX] ). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)”

The records describe a possible crash, fire, injury, or loss of control.

“Main dashboard display is partially blocked by a message stating “emergency call system malfunction.” Apparently the roof mounted antenna’s seal fails and allows water into the electronics for the emergency call system. Upon failure, it also stops the Bluetooth microphone for the cell phone to stop working. The dealer quoted the repair at $3,200. Judging from a google search, this is a common problem among this generation of BMW vehicles.”

The records describe a possible crash, fire, injury, or loss of control.

“The vehicle's Telematics Control Box (TCB), located beneath the roof-mounted shark fin antenna, failed due to water intrusion and internal corrosion. The failure produced the following fault codes confirmed by BMW of Norwood, MA: B7F341 (backup battery hardware defective), B7F33C (internal ECU error), and B7F327 (microphone short circuit to ground), along with cascading faults across multiple other vehicle modules. Symptoms included a persistent 'Emergency Call System Malfunction' warning on the instrument cluster, loss of GPS/navigation accuracy, and loss of odometer display. The shark fin antenna base seal — a foam tape and adhesive system — had likely deteriorated after approximately 6-7 years of service, consistent with a pattern of failures reported by numerous other owners of 2017-2023 BMW X1, X3, X4, X5, X6, X7, M440i, M550i, 330, 340i, and 750i vehicles. BMW dealer quoted $3,300 for repair. An independent BMW specialist quoted $3,500. BMW North America declined to cover the repair as the vehicle is out of warranty, despite acknowledging the issue as known. This failure mode is the subject of active class action litigation (Craft v. BMW of North America LLC, Case No. 1:24-cv-06826, U.S. District Court for the District of New Jersey) and an ongoing investigation by Sauder Schelkopf LLC on behalf of affected owners. SAFETY CONCERN: The failure disables the Intelligent Emergency Call system, which automatically contacts emergency services in the event of a serious accident. Additionally, the persistent warning obscures the instrument cluster including the odometer display, impairing normal vehicle operation. Water intrusion reaching vehicle electronics represents a broader safety risk if it propagates to safety-critical modules. ACTION REQUESTED: Formal investigation into the adequacy of the shark fin antenna sealing design across affected model years, and consideration of a recall or extended warranty to cover TCB replacement costs for affected owners.”

The records describe a possible crash, fire, injury, or loss of control.

“I am reporting a water intrusion issue in my 2019 BMW X3 involving both the roof-mounted “shark fin” antenna and the sunroof. Water enters the vehicle during normal rain conditions and has caused failure of the emergency call (SOS) system. This presents a serious safety concern, as the emergency communication system may not function in the event of a crash or emergency. Water intrusion also creates a risk of electrical damage and potential malfunction of critical vehicle systems while driving. The vehicle has been properly maintained, and this issue appears to be related to known defects involving water leaks from roof components in BMW vehicles. The total repair cost to address these issues is $4,650.”

The records describe a possible crash, fire, injury, or loss of control.

“My 2019 BMW X3 (G01 chassis) displays a persistent "Emergency Call System Malfunction" warning on the instrument cluster that cannot be dismissed or reset by the owner. The warning appears every time the vehicle is started and remains on the dashboard throughout operation. This is a known defect caused by failure of the Telematics Communication Box (TCB) module, which is commonly triggered by water intrusion through a defective seal on the roof-mounted shark fin antenna housing. BMW has acknowledged this issue through Technical Service Bulletin SIB B65 12 22 (Roof-Mounted Antenna Housing Seal Not Adhering), yet has not issued a recall or offered a no-cost repair to affected owners. This defect presents the following safety concerns: 1. The persistent, non-dismissible warning light desensitizes the driver to critical dashboard warnings, undermining the purpose of the vehicle's warning system. When drivers are conditioned to ignore a permanent warning, they are more likely to overlook new, actionable safety alerts. 2. The emergency call (eCall) system itself is rendered non-functional, meaning the vehicle will not automatically contact emergency services in the event of a serious collision where the driver is incapacitated. 3. The warning creates a visual distraction on the instrument cluster during driving. BMW's only offered remedy is full replacement of the TCB module at a cost of 1,500â“2,500 to the owner, despite this being a manufacturing defect (faulty antenna seal adhesive) and not a wear item. The defective component is located under the headliner and is not accessible for owner maintenance. This issue is widespread across 2017â“2023 BMW models equipped with the shark fin antenna, including the X3, X4, X5, X6, X7, 3 Series, and 5 Series. A class action lawsuit has been filed against BMW of North America regarding this defect. Numerous complaints have been submitted to NHTSA and documented extensively on BMW owner forums. I am requesting that NHTSA”

The records describe a possible crash, fire, injury, or loss of control.

“Beginning in July–August 2025, my 2019 BMW X3 (VIN [XXX] ) began experiencing multiple safety‑critical system failures affecting federally regulated components. The rearview camera intermittently failed to activate and later stopped functioning entirely, resulting in loss of rear visibility required under FMVSS 111. The Emergency Call (eCall) system displayed repeated malfunction warnings, indicating loss of automatic crash notification capability. The vehicle also displayed “Driver Assistance Restricted,” “Collision Warning Malfunction,” and pedestrian detection failure messages, showing that forward collision warning and related ADAS functions were not operating properly. During the same period, the telematics control unit (TCU) lost functionality. This caused loss of ConnectedDrive services, backend communication, remote diagnostics, remote status reporting, and safety‑related over‑the‑air updates. These failures match known BMW defect patterns involving water intrusion into the antenna/telematics module and backend provisioning issues. I submitted a detailed written escalation to BMW of North America. BMW issued two brief responses on February 11–12, 2026 that did not address any of the safety issues, did not provide the engineering basis for excluding my VIN from the applicable recall, and redirected me to a dealer, which has no authority over recall determinations. BMW closed the case without providing any investigation results, defect determination, or technical explanation, contrary to obligations under 49 CFR § 573. These failures materially impair federally regulated safety functions, including rear visibility, collision avoidance, emergency crash notification, and telematics‑based safety communication. The pattern suggests a potential broader defect affecting additional vehicles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)”