How Long Does a BMW Car Key Battery Last?
2 Answers
BMW car key batteries typically last for 2 years. The commonly used battery types for car remote keys are: 2032, 2016, 2025, 1620, 1632, etc. Among these, the 2032 is the most commonly used battery in the market. Additional Information: The method to replace a BMW car key battery is as follows: 1. Before replacement, understand the battery model required for your car key. Refer to the vehicle's user manual for the manufacturer-specified model to select a new key battery. 2. Remove the hidden mechanical key from the remote. Press the switch located at the edge of the gap in the middle to take out the mechanical key. 3. Use the mechanical key you just removed to insert into the edge of the gap, then use a lever motion to lift the key casing. 4. Once the key casing is opened, you will see the battery positioned deep inside. Slide it out from the gaps on both sides to remove the old battery. 5. Install the new battery, ensuring the positive and negative terminals are not reversed. Reassemble by snapping the back cover into place, completing the battery replacement.
I've been driving a BMW for several years, and the key fob battery typically lasts between one and a half to three years, depending on how frequently you use it. From my experience, if you press the unlock button multiple times daily for commuting and use the car frequently during hot summer days, you might need to replace it in just over a year. On the other hand, if the car is parked in a garage and used less often, the battery can last around three years. When the battery is running low, the key button response slows down, and the indicator light dims—that's when you should prepare to replace it. BMW key fobs use CR2032 coin batteries, which you can buy online for just a few dollars each. Simply open the key fob's back cover to install it, saving yourself unnecessary expenses at the dealership. However, it's best to use OEM batteries to avoid leakage from low-quality ones damaging the key. Also, when parking, avoid placing the key in hot spots like under the windshield to help extend its lifespan.
