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How to Replace the Key Battery for the New Mercedes-Benz GLC?

3 Answers
MakaylaMarie
07/29/25 12:51pm
Method for replacing the key battery of the new Mercedes-Benz GLC: 1. Push the switch at the end of the key to eject the mechanical key; 2. Use the key to press against the marked position to open the casing, then use a paper strip to pry out the old battery; 3. Install the new battery, paying attention to the positive and negative poles, then reassemble the casing and mechanical key. The Mercedes-Benz GLC is the first all-new crossover model launched by Mercedes-Benz, which can essentially be considered as the coupe version of the GLK. In terms of body dimensions, the Mercedes-Benz GLC measures 4764mm in length, 1898mm in width, 1642mm in height, with a wheelbase of 2973mm. In terms of power, the Mercedes-Benz GLC offers multiple powertrain configurations, including 1.8T, 2.0T, and a 3.0-liter V6 engine for gasoline variants.
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SanRyan
08/14/25 1:28am
I've changed the battery for the new Mercedes-Benz GLC key several times, and it's quite simple. First, there's usually a small slot or button on the back of the key. Gently pry it open with a fingernail or a small coin, but don't use too much force to avoid damaging the plastic casing. Remove the old battery—it's a CR2025, commonly available in supermarket electronics sections. When installing the new one, make sure the positive side faces up. Then align it with the slot and press it back in until you hear a click, indicating it's locked in place. After that, test the key by pressing the buttons—if the light turns on, you're good to go. Doing it yourself saves time and money compared to going to the dealership. Remember to check the battery regularly, as it typically lasts one to two years. Don't wait until it's completely dead, as it could affect unlocking or starting the car. It's a quick task—just five minutes and you're done.
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GenevieveAnn
10/09/25 6:17am
My GLC key fob stopped working and I found out the battery was dead. Checked the manual - it's simple: use a key ring or small blade to pry open the back cover of the key to access the battery compartment. Remove the old CR2025 battery, buy the same model from supermarket and install the new one (make sure the polarity is correct). Snap the cover back on and test the functions. The whole process takes less than 10 minutes - don't worry about damaging the key as the plastic design is pry-resistant. Remember to keep a spare battery handy to avoid sudden failure. Get into the habit of checking the battery every six months to save money and hassle.
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