What to Do When Your Car Electronic Key Fails?
2 Answers
If your car remote key is damaged, you can go to a 4S shop to replace it with a new one. Here are the steps to repair a car key: 1. First, find a suitable workspace for soldering with good lighting and power supply. Use a screwdriver to open the remote key and take out the remote control box. 2. Continue to disassemble the remote control box with a screwdriver until you can remove the remote circuit board. 3. Preheat the soldering iron. 4. Start soldering. The electronic components on the circuit board are delicate, with many small resistors and surface-mounted devices (SMDs). Accurately identify any poorly connected SMDs and carefully reinforce them with soldering. 5. Reassemble the soldered circuit board back into the remote control box. 6. Test the remote by pressing the buttons near your car. If the response is quick and the car doors unlock normally, it indicates that the remote has been successfully repaired.
Last time my car key stopped working, I quickly checked the battery. Often, when a key fails, it's just a dead battery. Simply go to a store to buy a new battery and replace it—it only costs a few dollars. If the key still doesn’t work after replacing the battery, the internal circuit might be damaged. In that case, I would try using the spare key. If all else fails, I’d visit a 4S shop or a professional repair center for help. Technicians there have the equipment to test the key signal or reprogram it. As for the cost, an original key might cost over a thousand, but some accessory stores sell cheaper alternatives. Remember not to disassemble the key randomly—waterproofing is crucial, as water damage can easily break it. Storing the key in a dry place can also extend its lifespan.
