How to Replace the Key Battery for Mercedes-Benz GLA?
3 Answers
To replace the key battery for Mercedes-Benz GLA, follow these steps: 1. On the side of the Mercedes-Benz GLA remote, there is a 'push' button. Press and hold the 'push' button, and the mechanical key with a metal head will come out. 2. Once the mechanical key is out, a small groove on the top will reveal a gap. Pry it open with force, and the key will split into two halves. 3. The side with the circuit board is where the battery is located. Flip it over and remove the old battery. 4. Place a new CR1632 battery in the metal frame position, then reinsert the circuit board back to its original place. Finally, close the two halves together to complete the replacement.
I've changed the battery for my Mercedes-Benz GLA key multiple times, and the process is actually quite simple - no need to go to a 4S shop. First, take out the newly purchased CR2032 button battery from the garage as a backup. When handling the key, be careful with the plastic shell. Use a small screwdriver or coin to gently pry open along the key seam - don't use brute force or the casing may crack. Then remove the old battery, make sure the new one matches the model number, and install it with correct polarity (metal side facing up, otherwise the key won't work). When closing the shell, press firmly to ensure all clips snap into place. Test the unlocking function to confirm it works - doing it myself saved me dozens of yuan, and more importantly, the key can last several more years, avoiding sudden failure that could affect driving safety. For daily storage, keep the key away from high-temperature areas to extend battery life.
I've repaired many electronic devices myself, and understanding the principle makes replacing key batteries easier. The Mercedes-Benz GLA key is powered by a small CR2032 battery. If the indicator light flashes weakly or the remote control doesn't work, it's likely due to low battery. First, prepare a new battery of the same model and find a small tool, such as a flat coin. Press it firmly against the small groove on the back of the key and gently push to open the casing. Remove the old battery, observe the electrode direction to avoid reversing it, and directly replace it with the new battery. Press it firmly and reassemble. The entire process emphasizes gentle operation because the internal circuit board is fragile and prone to breakage. After replacement, press the buttons to check the response and ensure the signal is normal. It's recommended to regularly check the battery status every two years to prevent sudden failures requiring emergency handling.
