What's the reason for BMW X4's non-responsive reverse radar and central control?
4 Answers
It is highly likely due to poor line contact. It is necessary to promptly check the wiring and the connection points of the entire vehicle's installation to see if there are any loose connections. The following are other possible causes: Aging of the video power cable: You can try replacing it with a new power cable. If the issue is resolved, it indeed indicates a problem with the video power cable. Prolonged use of the car camera: Extended use of the car camera can lead to poor chip photosensitivity, resulting not only in a snowy screen but also potential black screen issues. Such chip abnormalities and design defects are beyond the owner's ability to resolve and require inspection, repair, or direct replacement at a repair shop.
My experience tells me that the simultaneous malfunction of the BMW X4's reversing radar and central control is most likely due to an integrated system issue, such as the central control module freezing or failing, as modern cars often bundle these functions together. It could also be a power supply problem, like a blown fuse or unstable battery voltage causing an interruption in the circuit power. Dirty sensors can also affect radar signals. Software glitches are quite common, and BMW's new systems are prone to freezing. I recommend doing a simple check first to see if anything in the fuse box is burnt out, then try a power reset by turning off the vehicle for a few minutes before restarting to see if it returns to normal. If this doesn’t work, don’t delay—seek professional repair immediately, as driving safety could be compromised. Such faults aren’t uncommon in luxury cars, but extra attention should be paid to maintenance, as aging wiring can worsen the issue.
I usually drive a BMW and have encountered similar situations where both the central control and radar systems failed. The reason could be that the battery is almost dead, and the voltage drops too low, affecting the module's operation; or the central control system software crashed, sometimes bugs appear after updates; plus, the radar sensors are dirty or blocked by foreign objects, making detection impossible; a blown fuse is an easily overlooked point—you can check the fuse box under the front footwell or in the trunk to see if the relevant fuse is broken and try replacing it with a new one. It is recommended that the owner clean the radar sensors themselves or restart the system by holding down the central control power button. If the issue recurs multiple times, it indicates a deeper hardware problem—don't risk driving and instead tow it to a 4S shop to scan for fault codes with a diagnostic tool, which is safer to avoid turning a small issue into a major one.
My BMW's reversing radar suddenly stopped working and the central control didn't respond, possibly due to a system-wide crash requiring a simple reboot; check the fuse in the trunk fuse box and replace it if blown for power supply line issues; clean the sensors if they're faulty or covered with dirt; re-secure any loose module connections or unplugged connectors; it's best to stop the car when handling these issues—don't risk starting or turning off the key, wait a while before trying again to see if it recovers. If not, take it to a repair shop for diagnosis as soon as possible to reduce misjudgment.
