Where is the switch for the Honda CR-V's non-functioning reverse radar?
2 Answers
Honda CR-V's reverse radar alarm switch is located on the control panel to the left of the car's center console, which is a button marked with a 'P' and a signal symbol. The principle and functions of the reverse radar are introduced as follows. Principle of the reverse radar: The reverse radar emits ultrasonic waves through ultrasonic sensors. These waves reflect back after hitting an obstacle and are received by the ultrasonic sensors. The controller then calculates the distance to the obstacle based on the time taken for the ultrasonic waves to be emitted and returned. Finally, an urgent alarm sound is emitted through the buzzer to alert the driver. Main functions of the reverse radar: Accurately measures the distance between the rear of the car and the nearest obstacle; when reversing to the limit distance, it emits an urgent warning sound to remind the driver to brake; it can repeatedly emit a voice warning sound to alert pedestrians.
Last month I worked on an old CRV that also had non-responsive radar, spent half a day troubleshooting only to find it wasn’t a switch issue at all. Here’s how to diagnose: First, clean the four sensors on the rear bumper—mud covering them can silence the system. Next, check the fuse box near the driver’s left foot—look for the 15-amp fuse marked with a reverse radar icon. Pay special attention to the tailgate wiring harness; the black rubber conduit running through the hinge often cracks and breaks. Of course, don’t forget the switch—it’s among the row of buttons under the dashboard to the right of the steering wheel, the one with a triangle and soundwave symbol. But in that last car, the real culprit was a corroded buzzer connector due to water ingress—cost eighty bucks at the shop to fix.
