What to Do When the Car Doesn't Respond to the Key Fob?

1 Answers
SophieRose
07/24/25 10:34pm
Dead battery is just one of the reasons causing the key fob to "malfunction". Other reasons include radio frequency interference nearby, interference from thieves, decoding, etc. Here is some extended information: 1. If you find that the remote key doesn't respond when unlocking or locking the car, and you observe that the small light on the key doesn't flash, it's very likely that the battery inside the key is dead and needs to be replaced. 2. The normal service life of the battery inside the remote key is 2-3 years. Depending on usage conditions, some car owners have even used it for 5-8 years without replacement. 3. The working mechanism of the remote key is a wireless communication system composed of a transmitter and receiver, which belongs to low-power radio equipment. The control system in the car identifies the signal code through the electronic control unit (ECU).
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