How to Replace the Battery in a Mercedes-Benz GLA260 Key?
2 Answers
On the side of the Mercedes GLA remote, there is a PUSH button. Press this push metal head to release the mechanical key. After removing it, you will see a small groove and a slit at the top. Pry it open with force, and the key will split into two halves. 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 position. Then, put the circuit board back in place, close the two halves, and you're done.
Replacing the battery for a Mercedes-Benz GLA260 key is actually quite simple. I do it myself often to avoid queuing at the dealership and save money. There's usually a small groove on the back of the key—just use a small coin or thin plastic piece to gently pry it open. Inside, you'll find a standard CR2032 coin battery. First, note the battery orientation; the old one has positive/negative markings, so gently remove it. When inserting the new battery, make sure the positive side (marked with a plus sign) faces up—don’t put it in backward. Press the cover back until you hear a click. Test it by pressing the unlock button to see if the car responds. When buying a replacement, opt for reputable brands like Panasonic to avoid counterfeits. The whole process takes about a minute. Doing it yourself not only saves money but also teaches you basic maintenance. The battery typically lasts about two years before needing replacement.
