How to Disassemble a MINI Key?
3 Answers
MINI key disassembly method: 1. Press the silver button on the left side of the key and forcefully remove the mechanical key; 2. Use a small flat-head screwdriver to pry open the groove at the red circle arrow position. The MINI is a compact hatchback with exterior dimensions of 3832 mm in length, 1727 mm in width, and 1453 mm in height, a wheelbase of 2495 mm, front and rear track of 1501 mm, and a curb weight of 1225 kg. The MINI is equipped with a 1.5T L3 engine, delivering a maximum horsepower of 102 hp, a maximum power of 75 kW at 3900 to 6500 rpm, a maximum torque of 190 Nm at 1380 to 3600 rpm.
I've taken apart my MINI key several times myself, always because the battery needed replacing due to aging. Usually, there's a small groove or hole on the back of the MINI key. Use a small flat-head screwdriver or plastic pry tool to gently open the shell—don't apply too much force or it might crack. Once opened, you'll see a small coin-cell battery inside, typically a CR2032 model. Carefully remove it without touching the circuit board. When replacing the battery, make sure to insert it with the correct side facing up, then close the shell, align the edges, and press a few times to secure the clips. Avoid using metal tools to touch any components during the process to prevent short circuits. After reassembly, test the buttons to ensure they work properly. If you feel unsure about prying it open or are afraid of damaging it, you can always go to a 4S store and pay a small fee—but DIY can save you a few dozen bucks, which is pretty cost-effective. The battery usually lasts one to two years, so regular checks can prevent sudden failures and the hassle they bring.
Last time I helped a friend replace the battery in a MINI key fob, and the whole process wasn't complicated. First, take a look at the small gap in the middle of the key fob. Use your fingernail or the tip of a small knife to gently pry it open until you hear a click. Inside, you'll find a small battery holder and a circuit board. The battery model is CR2032, which is very common and can be bought at any supermarket. After replacing the battery, align the cover and press it firmly. Don't worry about the shell breaking—the plastic quality is decent. Be careful when disassembling, as there might be small springs or clips inside that could fall out. After reassembling, test the remote functions. MINI key fobs from different years might have slight design variations, but most are similar and easy to handle. If the key itself has issues like unresponsive buttons, you can use an alcohol swab to clean the contact points after opening it. It feels rewarding to do it yourself, and I recommend taking a photo beforehand to remember the positions in case you forget.
