Why does the remote key fail after replacing the battery?

1 Answers
VonMatthew
07/30/25 12:19am
Car remote key failure after battery replacement may be due to aging internal wiring. Remote key failure: After replacing the car battery, it needs to be re-matched. At this time, the relevant systems in the car need to be reconnected. Insert the key, turn it to the "II" position, and then quickly reset it to the "0" position. Infrared signal blocked: The car's remote key does not emit an infrared signal. It is highly likely due to aging internal wiring. Check system failure: The car's check system cannot recognize the smart card. It may be due to a malfunction in the remote key module.
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