The analysis is as follows: you can go to the 4s shop, generally replace the new, will not repair. If you want to repair yourself, the steps are as follows:
1, first of all, you need to find a more suitable soldering iron work site, electricity and good line of sight. Take out the car remote control key disassemble the remote control with a screwdriver and take out the remote control box.
2. Continue to decompose the remote control box with a screwdriver until you take out the remote control circuit board.
3. Preheat and prepare the prepared electric soldering iron.
4. Start welding. The electronic components of the circuit board are relatively sophisticated, with many small resistors and patches. The patches with poor contact need to be accurately identified and reinforced with care.
5. Reinstall the welded circuit board to the remote control box.
6, you can go to the car next to the test, click the remote control button, the response is sensitive, the door unlocked normal proof that the remote control has been repaired. The principle of active working mode is to Control the door through the Body Electronic module (ECU, Electronic Control Unit) and body control module (BCM, Body Control Management). Just press the key button to send the unlock\/lock command. After verification by the body electronic module, you can open\/close the door coil induction mode mainly by placing the encrypted chip in the key, in the process of unlocking, through the RF transceiver of the body to verify whether the key matches to determine whether the engine can be started. It is mainly used for the car to still start normally when the key is out of power. 1, when the owner enters the sensing area of the key system, as long as the hand touches the door handle, the identification \"key\" it carries will receive the low-frequency signal sent by the car, if the signal is consistent with the identification information saved in the \"key\
Car keys can be fixed if they break.
Car remote key unlocked no response, you can check the car battery power. If it is due to low battery power, or power exhaustion and other reasons, the car remote control key can not be unlocked, only need to replace the remote control key battery, you can easily repair the car remote control key fault.
After the car remote control key was dropped, or was soaked in water, the unlocking did not respond, and it was necessary to repair the remote control circuit board by detecting and repairing it. First of all, the car remote control is decomposed, and the circuit board of the remote control key is successfully removed. Then, using a multimeter and cleaning agent, the circuit and components in the circuit board are measured and wiped. Finally, it is to re-weld the circuit board of the remote control key, the valve with poor contact, and the line with virtual welding, using the electric soldering iron.
< br >
After assembling the repaired remote control key, check whether the fault is successfully repaired by testing the unlocking and locking of the car. After the test is no problem, the maintenance of the remote control key of the car is successfully completed.