How to Replace the Battery in a Mercedes-Benz C32 Key?

2 Answers
Harmony
07/24/25 1:15pm
Method to replace the battery in a Mercedes-Benz C32 key: 1. Locate the sliding switch on the car key, slide it to open the mechanical key, and pull out the mechanical key. 2. Use the just-removed metal key to pry open the key cover, separating the key into 3 parts, which will reveal the battery location. 3. Remove the old battery, insert the new one, and close the key cover to complete the process. Here are some related details: 1. The Mercedes-Benz C-Class is the best-selling model in the family and the most comprehensive in terms of variants among all Mercedes-Benz series. The new C-Class sedan is equipped with active safety systems, intelligent lighting systems, preventive safety systems, passenger safety protection systems, and rescue tools, making it comfortable, refined, practical, and top-notch in safety. The C-Class sedan can take several measures based on the type and severity of an accident: automatically shutting off the engine and cutting off the fuel supply. Hazard warning lights and emergency interior lights are automatically activated, and if necessary, side windows are partially lowered and doors are automatically unlocked. 2. Handling performance is a major highlight of the Mercedes-Benz C-Class: the steering wheel is very light; the transmission is excellent, with smooth gear shifts, and the tires have good grip, but road noise is somewhat loud; the brakes are responsive, and the suspension system is firm yet flexible, allowing minimal body tilt during high-speed cornering, providing a comfortable driving and riding experience.
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JasonFitz
08/11/25 7:18am
Changing the battery for a Mercedes C32 key is quite simple, and I often do it myself. First, look at the back of the key—there's a small groove or a tiny button design. Use a small screwdriver or a coin to gently pry it open, and it will split into two halves. Don't use too much force to avoid scratching the casing. Inside, you'll find a flat, coin-shaped battery, model CR2032. Remove the old battery, noting its position carefully, and place the new one with the positive side facing downward, pressing it firmly. When reassembling, align the clips and press them together. Test the buttons to ensure the remote is responsive. Remember to choose the correct battery model, which is available at supermarkets, to avoid buying the wrong one. It's a cost-effective tip to replace the battery every year or two to prevent the inconvenience of a dead battery, saving you a trip to the dealership.
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