What are the reasons for BMW's reverse radar not displaying?

[LaLydia]

The reasons for the reverse radar not displaying are as follows: Wiring issues: Check the wiring connection between the reverse radar and the vehicle's installation. Look for any loose connections, as poor contact can cause the reverse radar to work intermittently. Radar sensor malfunction: Inspect the reverse radar's sensors, which are quite delicate. Sometimes, they can malfunction due to car washing or high-pressure water jet cleaning (also check if the internal wiring is secure). Radar hardware failure: Check if the reverse radar itself has inherent defects or damage, or if there are loose connections. It is recommended to visit a professional repair shop for inspection.

[BriellaFitz]

Last time I drove my friend's BMW, the radar didn't respond. It might be because the sensor surface was covered with mud or ice/snow. This issue is quite common after rainy days, and you can simply clean it yourself with a soft cloth. If it still doesn't work after cleaning, perhaps the fuse is blown—check the corresponding number in the engine compartment fuse box to see if it's melted, and try replacing it with a new one. Additionally, control module failure or loose wiring connections can also cause it not to display, especially after driving on bumpy roads where connections may become unstable. Gently shaking the plug might reconnect it. I suggest starting with simple fixes to avoid risky driving, especially when reversing at night, which can be particularly dangerous. It's best to carry a flashlight to assist with visibility. If you really can't figure it out, go to a professional shop for diagnosis. During regular maintenance, pay extra attention to the radar area to ensure it's not blocked by debris.

[MacNevaeh]

Reasons for radar not displaying are often related to sensor issues. BMW models are prone to false alarms due to dirt coverage or rainwater infiltration, so thoroughly clean each probe first. Blown fuses are also a primary cause; they are located in the engine compartment's fuse box, and you can try replacing the corresponding numbered fuse. For wiring issues, aging or compression can cause short circuits or breaks, requiring careful inspection, especially in the chassis area where wear is common. Control module faults are more complex and may require professional diagnostic tools to read codes—tinkering on your own could damage more systems. I usually advise owners not to take shortcuts by disassembling parts randomly. Instead, schedule an appointment with a 4S dealership or authorized service center for a comprehensive inspection to ensure driving safety, while also checking other auxiliary systems to prevent related issues.

[DeKing]

The failure of BMW's radar system may stem from sensor blockage, such as simple issues like bird droppings or dust accumulation. First, try rinsing with soapy water to see if functionality is restored. If it's an internal fault like corroded wiring or a blown fuse, especially prone in humid environments, manually open the fuse box to check the fuse status. Abnormalities in the control unit may cause the display to disappear—restarting the vehicle system can sometimes provide a temporary fix, but timely repairs are necessary to avoid blind spot risks. As a car enthusiast, I regularly clean the radar probes to maintain sensitivity. Long-term neglect could lead to more expensive repairs. When reversing, relying on the camera or rearview mirror for assistance is safer.