What to Do When the Car Remote Receiver Fails?
2 Answers
Dead battery or poor battery contact. The time control module in the remote key malfunctioning can also cause the remote to stop working. After applying explosion-proof sun film to some cars' front windshields, the remote door lock may become unresponsive when attempting to unlock the car from the front. Normally, the original battery of a smart key can last about two years, but severe electromagnetic interference can also cause the smart key to malfunction. Replacing the battery of a smart car key requires caution. Any mistake can burn out the circuit board inside the key. Car owners are advised to have the battery replaced at a professional 4S shop whenever possible.
Last time when I remotely locked the car, I noticed the buttons didn’t respond after pressing them for a while, and the car lights didn’t flash either. I initially thought the remote’s battery was dead. After replacing it with a new one and it still didn’t work, I realized it might be an issue with the receiver. Now, temporarily using the mechanical key to lock and unlock the car is quite troublesome, especially during rainy days when fumbling for the key outside the car feels particularly awkward. I found that when taking it to the auto repair shop for inspection, the mechanic first tests whether the signal transmission is normal with a device, then removes the interior trim to check the receiver module’s wiring. If the receiver is confirmed to be faulty, replacing it with an original one costs around six to seven hundred. It’s advised not to go for cheap aftermarket parts—a fellow car owner replaced theirs with an aftermarket one, only for it to fail after three months, ultimately requiring a replacement with an original part again.
