How to Replace the Battery in a Mistra Key?
2 Answers
Method for replacing the battery in a Mistra key: 1. Pull out the mechanical key, then use a flathead screwdriver to slowly pry open the side; 2. Open the key cover and remove the old battery; 3. Insert the new battery, paying attention to the positive and negative polarity; 4. Snap the battery cover back on and reassemble the key. Taking the 2021 Mistra as an example, it is a mid-size sedan with body dimensions of 4780mm in length, 1815mm in width, and 1460mm in height, a wheelbase of 2770mm, a minimum ground clearance of 116mm, and a curb weight of 1357kg. This vehicle is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 170PS, a maximum torque of 253Nm, and a maximum power of 125kW, paired with a 7-speed dual-clutch transmission.
I've changed the battery in my Mistra key fob several times myself, so here are some tips. There's a fine seam or groove on the back of the key fob – you'll need a small tool like a coin or flathead screwdriver to pry it open. Be gentle to avoid cracking the casing. Inside, you'll typically find a flat, round CR2032 battery; remember to install the new one with the positive side facing up. Before replacing, lay the key fob flat on a table to prevent the battery from popping out. After the swap, immediately test the lock/unlock functions to check if the remote range is back to normal. In daily use, if the key fob stops responding after a few presses or the range shortens, it's a sign the battery is running low. Generally, replace it every 2 years – you can buy these batteries for just a few bucks at supermarkets, saving dozens compared to dealership prices. Keep your hands dry and static-free during the process for a simple and safe replacement.
