In case the BMW car key fob stops working for any reason, it serves as a warning of low battery level or that the battery is almost discharged. If this is indeed the case, the car owner will need to replace the drained battery. The key fob is essential for opening or closing the car doors and trunk.
To get the remote key fob working again, replacing the CR2032 battery with a new one is necessary. It is important to note that some cars may require a CR2450 battery.
Preparing for Battery Replacement in a BMW Key Fob
To replace the battery, a small flat-head screwdriver will be required.
Attention! If your car model does not have the comfort access feature, which automatically recognizes the approaching owner, then most likely the key fob is equipped with a special type of battery that cannot be replaced.
Usually, such key fobs are charged through the ignition lock, directly from the car's battery. If the battery fails, contacting an authorized dealer for a complete key replacement is advisable.
Each key fob is assigned a unique programming code necessary for activating the alarm system. When contacting the official dealer, the car owner will need to provide the car's VIN code to order a new key fob from the manufacturer.
Instructions for Replacing the BMW Key Fob Battery
To open the BMW key fob case, the emergency key should first be removed. To do this, press the central part of the key fob from the edge to extract the emergency key.
There should be a cover at the top of the key where the battery compartment is located. Insert the flat-head screwdriver there. Once the key is removed from the fob, a small slot will be visible on the casing, where the screwdriver should be inserted.
This is done to open the cover on the device's casing, under which the installed battery is located.
After removing the cover, the battery can be easily taken out with fingers and replaced with a new one. The standard markings on the battery are CR2032 or CR2450.
Purchasing a CR2032 or CR2450 battery is available in almost any auto parts store or electronic device retailer. It is not recommended to opt for cheap batteries as they may not hold their charge for long due to low quality.
Possible Difficulties During Replacement
If the key fob still does not work after battery replacement, try inserting it into the ignition lock for about 20 seconds. Sometimes, this helps in better synchronization with the key fob.
If the key fob still does not work, check the polarity – it is possible that the + and — signs were reversed during battery installation. If the polarity and battery are correct but the key fob still does not work, check the fuse or relay responsible for recognizing the key inserted into the ignition lock.
Companies like Energizer, Duracell, Panasonic, Maxell, Sony, Philips, Kosmos, and others manufacture the required battery models.
With a functioning BMW remote key fob, one can open and close the car doors and trunk, raise and lower the windows, open the electric hatch, and even activate the panic signal when needed.
If the key fob seems to work intermittently and fails to respond to commands when approaching the car closely, the battery most likely needs replacement, which should be done promptly.
To minimize problems and inconvenience with your car, it is advisable to regularly undergo technical inspections and maintenance at specialized service centers. This will ensure smooth and trouble-free operation of the vehicle, bringing joy to any driver.
