1. It is found that the car back up alarm does not ring. First check whether the mainframe power cord is connected and whether there is current; then check whether the radar mainframe cord is loose. If there is no problem with both, the problem may lie in the radar itself.
2. If it is determined that the problem is the car back up alarm, the first thing to consider is that the buzzer is broken. At this point, you need to buy a buzzer and install it; in addition, consider whether your car is available recently. Modified. If you do this, the wire of the car back up alarm may be damaged during the modification process. This requires inspection of the car in the original construction workshop or 4S workshop.
3. When it is found that the car back up alarm does not sound, first check whether the line connection at the bumper is intact, and then check whether the reversing light is on when the reverse gear is engaged, if not, check that the connection switch of the reversing light is damaged. Then, you can check whether the computer displays fault codes and whether there is no problem with these items, and then check whether there is a problem with the car back up alarm itself.
Abstract: The above are the corresponding check steps after the car back up alarm does not sound, and several possible solutions. I hope that when you encounter this situation, you will not be caught off guard. The most important thing is to solve the problem in time, so as not to cause greater disaster.