How to Disassemble an Old Mercedes Car Key?
2 Answers
Method to disassemble an old Mercedes car key: Flip open the tab at the rear end of the key to remove the mechanical key. Insert the mechanical key into the side slot of the key, press the internal gray button, and with the other hand, push the rear end of the key upward. When a gap appears, you can remove the mechanical key. The letters at the front of Mercedes cars indicate the type and class: A-Class is a small single-compartment car, C-Class is a compact sedan, E-Class is a mid-size sedan, S-Class is a luxury sedan, M-Class is an SUV, G-Class is an off-road vehicle, V-Class is a multi-purpose van, SLK is a compact sports car, CLK is a mid-size sports car, SL is a luxury sports car, CL is a luxury coupe, and SLR is a supercar.
I used to frequently help friends disassemble old Mercedes car keys, especially the classic flip key models. The first step is to locate the small cross-head screw on the back of the key, usually hidden in the seam, and gently unscrew it with a small Phillips screwdriver. If there's no screw, there might be clips instead—use a plastic pry tool to carefully open the side gap, avoiding metal tools to prevent scratching the casing. Once opened, you'll see the battery compartment and circuit board. If replacing a CR2032 battery, be cautious not to touch internal components; use tweezers to assist in removing the old battery and insert the new one before testing the button functions. When reassembling, align the cover properly and press the clips firmly or screw back the fastener. The plastic on older Mercedes keys tends to be brittle, and excessive force may break the clips, so I recommend keeping spare parts on hand just in case. The whole process takes about five minutes—just a bit of patience and you're good to go.
