What are the reasons why the car key has power but cannot be sensed?

1 Answers
DiDakota
07/29/25 12:35pm
There are several reasons why a car key has power but cannot be sensed: 1. Key fob malfunction: This could be due to damage from mechanical impact on internal circuits or burnt transmitter components caused by water exposure. 2. Dead battery: The car's sensor cannot function and thus cannot receive signals from the key. 3. Electromagnetic interference: If the environment has strong electromagnetic interference, it can disrupt signal transmission. 4. Poor soldering in the power distribution box: Loose connections from poor soldering can cause sensor failure. 5. Faulty sensor module: This is equivalent to losing the "receiver," making signals from the car key ineffective.
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