How to Change the Battery in BMW Key Fob
Your automobile key fob may run out of batteries just like anything else, usually at the worst possible moment. Fortunately, changing these batteries is not difficult.
Key fobs are remote controls with RFID chips and antennas. Radio waves from the key fob operate the car's locking mechanism using a radio frequency ID reader. Each key fob sends an RFID tag that the car's reader can read.
Modern BMWs include a key fob, either embedded into the key or a separate device with lock and unlock buttons that you can attach to your keychain. Batteries power these key fobs, which connect wirelessly with your car.
Even though key fob batteries may last five years or more, a bad battery may prevent you from starting or entering the car remotely. The good news is: key fob batteries are straightforward to replace.
This Step-by-Step Instruction Explains How to Replace your Key Fob's Battery.
Check the Plastic for the Embossed Battery Type
Certain key fobs will have the battery type written on the outside. In this manner, you may choose your battery at the shop before unlocking the key fob. The three most well-known brands of key fob batteries are Panasonic, Energizer, and Duracell.
Find the Point at Which the Fob's Two Halves Merge
The majority of key fobs split in half and open like clamshells. Where the two parts may be divided will have a seam; sometimes, that seam can even have a notch. If the ignition switch on your BMW of Peoria, AZ still requires you to enter the key, just hang the fob from that keychain; the weight of your home keys may cause the ignition cylinder to wear out, which might be dangerous.
Pry Gently at the Notch or Seam
Only one tool is required to replace the battery in your key fob. To open the fob along the center, carefully pull apart the two parts using a tiny, thin, flat-bladed screwdriver (or, occasionally, a strong fingernail). You shouldn't be able to lock your keys inside most automobiles with key fobs or transponder keys, but you should be ready if anything untoward occurs. By the way, this key finder might be useful if you often misplace your keys.
Examine the Positive and Negative Ends of the Battery Orientation
The battery will often have a plus and minus sign, be labeled with the battery size, and resemble a tiny coin. Take careful note of the battery's orientation. It must be installed in the same manner once you've bought a new battery in the same size.
Remove the Old Battery and Insert the New One
Usually, you can easily remove the battery by pressing on it with your finger. However, if you're experiencing problems, a flat-bladed screwdriver could be useful. Place the new battery in with the plus and minus signals facing in the same direction.
Close your Key Fob and Check that it Works
Reassembling the fob and testing its buttons is the opposite of disassembling it. Everything ought to be like new all around.
You can now replace the battery in your key fob with ease. How much does it cost to replace a BMW key? Just the cost of the battery (or professional assistance, if you need it!).
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