How to Replace the Key Battery for Mercedes-Benz GLA?

1 Answers
OSienna
07/30/25 7:39am
On the side of the Mercedes-Benz GLA remote, there is a PUSH button. Press this push metal head, and the mechanical key will come out. After it comes out, a small groove and a slit will be exposed on the top. Pry it open with force, and the key will split into two halves as you apply pressure. The side with the circuit board is where the battery is located. Flip it over, remove the old battery, and place a CR1632 battery in the metal frame. Then, put the circuit board back in place and close the two halves together. 1. Method for opening the car remote key to replace the battery: There is a circle on the back of the remote key with a groove in the middle. Use a coin to press into the groove and twist open the cover to see the button battery. The groove is on the edge between the front and back of the remote key. Use an appropriate tool according to the size of the groove to twist it open. Buy a new battery with the same number as the original one for replacement. 2. Working principle: First, the key emits a weak radio wave, which is received by the car antenna. The electronic control unit identifies the signal code, and then the actuator of the system performs the action of locking/unlocking.
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