Why does the Mercedes car key suddenly lose its sensing function?

1 Answers
IrisRose
07/29/25 6:16pm
There are several reasons why the Mercedes car key suddenly loses its sensing function: The key battery is dead: The battery in the smart key also needs to be replaced. When the battery reaches the end of its service life, it may cause the inability to unlock the car. The vehicle battery is dead: This is also a reason why the vehicle cannot start. If the vehicle battery is dead, it will prevent the car from starting. It could also be that the battery has reached its lifespan and needs replacement. Magnetic interference: There may be strong interfering items nearby that disrupt the car's sensor, preventing it from detecting the key's presence. In such cases, the vehicle cannot be started either.
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