Why does the car display screen not turn off after the engine is shut off?
1 Answers
The reason why the car display screen does not automatically turn off after the engine is shut off may be due to aging or short-circuiting of internal wiring. Solutions for the car display screen not turning off after the engine is shut off: To repair aging or short-circuiting internal wiring, a car diagnostic tool is required. Enter the SMK system to read the data stream. If the data stream shows "ACC" and "ACC input circuit and battery circuit (with the engine off)" both in the ON state, it indicates a short-circuit condition. The cause of the short circuit is likely an issue with the power supply module, requiring timely inspection and repair of the relay. The specific steps are as follows: locate and open the fuse box next to the battery; then find the relay of the power distribution module on the back, identifying the corresponding relay based on its position; try replacing it with a new relay. If the problem is resolved, it means the relay was faulty. Another possible scenario is if an audio amplifier was previously installed by the owner, the issue might be due to wiring problems (such as using a constant power line to supply the amplifier), causing abnormal power supply. In this case, simply troubleshoot the corresponding wiring.