What is the reason why the reversing radar of Jetta VS5 does not display the distance?
4 Answers
Damage to the radar power line or failure of the radar probe circuit. Reversing Radar: The reversing radar is an anti-collision radar for reversing, also called a parking assist device. It mainly consists of ultrasonic sensors, controllers, displays, etc. It is a safety auxiliary device when the car is parked or reversing. It can inform the driver of the surrounding obstacles through sound or more intuitive display, relieving the troubles caused by the driver's looking around when parking, reversing, and starting the vehicle, and helping the driver eliminate blind spots and blurred vision defects. Working Principle of Reversing Radar: Based on the principle of animal bionics, it informs the driver of the surrounding obstacles through sound or more intuitive display, relieving the troubles caused by the driver's looking around when parking, reversing, and starting the vehicle, and helping the driver eliminate blind spots and blurred vision defects, thereby improving driving safety.
It's quite common for the reversing radar not to display distance readings – eight times out of ten, it's because the radar sensors are dirty or covered in mud, which interferes with signal transmission. The Jetta VS5 relies on these radar sensors to detect obstacles behind when reversing. If the sensor surfaces are coated with grime, the signal gets blocked and fails to show distance readings. Another possibility is a minor glitch in the radar control unit, like loose or corroded wiring connections, causing abnormal data transmission. Additionally, a blown fuse could also disrupt the radar system's operation. My advice is to first park and inspect the sensors, gently wiping them clean with a damp cloth to ensure they're unobstructed. If that doesn't fix it, check if the relevant fuse in the fuse box is intact, or consider visiting a 4S shop to scan for potential error codes with diagnostic equipment. Don't panic if the reversing radar fails – activating the rearview mirror and turn-assist lights can serve as temporary solutions. For safety, avoid forcing the reverse maneuver; instead, troubleshoot step by step to prevent costly scratches that'll make your heart ache for the car.
My car is also a Jetta VS5. A while ago, the distance display suddenly disappeared while reversing, which really freaked me out. Later, I found out that the probe connecting wire got pinched by the door, and the aging wires caused poor contact, leading to signal interruption. Additionally, if there's a bug in the radar module software or it's not updated in time, it might also stop displaying data. When checking, don’t forget to test other sensor functions, such as whether the parking warning sound is still working. If the sound is normal but the distance isn’t displayed, the problem lies in the display part, possibly due to a loose connection in the dashboard or the main screen interface. I recommend trying to unplug and replug the radar connector yourself to see if it resets successfully. In daily driving, be careful not to let luggage or rainwater affect the probe position—these little things are quite fragile. If there’s an issue, fix it promptly. Safe driving is more important than anything else. Remember, don’t rely solely on the radar when reversing; take a few extra glances behind to ensure safety.
Radar not displaying distance is commonly caused by sensor malfunctions, where the probe being covered by dirt affects signal transmission accuracy, or due to short circuits or broken wires. Overheating or water ingress in the electronic control unit can also lead to failures. Additionally, blown fuses and unstable power supply are potential factors. I recommend regularly cleaning the probes, ensuring the health of the power supply system, and avoiding modifications that could affect the original radar. If you encounter this issue, prioritize checking basic elements before rushing to repair.
