Rearview System Braking problems of the 2021 BMW X5

Vehicle: 2021 BMW X5 xdrive40i (g05) mileage: 54,423 miles component: central information display (cid)/ mgu (media graphics unit) head unit safety defect: the cid intermittently goes completely blank without warning. When this occurs, the backup camera is unavailable, creating a safety hazard when reversing. Navigation, radio, apple carplay, and vehicle settings are also unavailable. Failure history/diagnosis: the first failure occurred about one month ago while I was reversing. After several hard resets and leaving the vehicle unused for two days, the display began working again. The failure occurred again yesterday when my spouse started the vehicle. I took it to bobby rahal BMW of south hills, PA. The BMW technician confirmed that the head unit (mgu) and ram (receiver audio module) are not communicating. The technician also found corrosion on the head-unit power connector and inside the head unit, suggesting moisture intrusion and/or an internal electrical short. The dealer recommended replacing the head unit, with the part costing over $4,000, plus labor and additional diagnosis to identify the source of the leak/moisture causing the corrosion. Inspection: the defect was inspected and confirmed by the BMW dealer. The failed component is available for inspection upon request. There were no police or insurance inspections. Warning signs: there were no warning lights or messages before either failure. The display simply went blank. The failure is intermittent and unpredictable. Safety concern: the cid can suddenly fail during operation, including while reversing, causing loss of the backup camera and other critical functions. Corrosion inside the head unit and on its power connector raises concern about a recurring moisture-intrusion or electrical/design defect. I request that NHTSA investigate whether this is a recurring safety defect affecting BMW X5 g05 vehicles and determine whether a recall or corrective action is warranted.

You get no warning when backing out of a parking spot all features are on but no warning.

Rear cross traffic alert does not work in the subject car. BMW owners' manual describes a system that should alert from two parking spaces away while backing out, the system gives no alert as described. What follows is my post to a BMW owner's group where members are discussing similar issues with their vehicles. This problem is a large one and needs to be investigated. Rear cross traffic alert is a critical safety system. "regional field service rep spent several hours last week with the car. Made some updates/integrations and declared the systems now working. I did some controlled testing in a parking lot in reverse with both brake applied and rolling in reverse. Zero visual or acoustic alert from the rear cross traffic alert system. I am convinced BMW and the dealers are trying to cover up this colossal failure of a very important and basic safety feature BMW says they sold us! I will give corporate one more try and then will report to NHTSA that BMW has a major defect in their cars. " I am scheduled to talk with the regional BMW engineer in the next two weeks. Is there a means for me to update this submission?.

When in reverse, the vehicle doesn't give any warning (audio or visual) that a person or vehicle is approaching on either side.

When reversing out of driveway/parking space, the rear cross traffic warning alert doesn't give any warning until my vehicle is inches from another vehicle. The system isn't sensitive enough.

System fails to notify me of pedestrians/cross traffic when backing out of driveway, parking lots, etc. Multiple near misses. Orange/red shadows on screen do not appear. Ditto for beeps.