BMW Remote Key Batteries – Simple Answers and Replacement Procedures
BMW currently uses about three different shaped key remotes. The service process for each is different, as we have outlined below.
For ease of identification, we have grouped these into three forms: rectangle, slant, and diamond. You’ll find additional details and procedures below.
Early “Rectangle” Key Remotes
The simple answer to battery replacement is that it depends on whether the key is a “Comfort Access” or a “Standard” key.
Details are below so you can tell the difference between the two.
BMW Comfort Access Key
If the car still starts with the key in your pocket, you have Comfort access.
If this feature is present, you have a replaceable battery.
The back of the key also has a small square removable cover, which may not be readily apparent.
– Serviceable Remote.
The battery recharges from the dash. It works very well for about 10 years, and then it’s time for a new key.
– Unserviceable Remote (unless you have access to a small, fine laser to split the welded plastic seam).
BMW “Slant” Key
This key is used in many 2011, 2012, 2013, 2014, 2015, 2016, and 2017 F-Series Models.
Such as the 3, 5, and 7 series and the X3.
The good news is that these keys do have a replaceable battery.
– Serviceable Remote.
BMW “Diamond” Key
The battery in this key is not designed to be replaced.
It is, however, possible to replace the battery in this key by cutting the case and soldering a new battery.
To replace this BMW key battery, you will need a VL2020 battery.
This procedure is not recommended by the manufacturer.
– Unserviceable Remote (unless you have access to a small, fine laser to split the welded plastic seam.)
Service Procedures For Each Key Type – Click To Enlarge
Conclusion
Replacing batteries in your BMW remote key is a pretty straightforward procedure, if you follow the details supplied here. If you have question, please stop by, we keep most remote batteries in stock, and are delighted to help you and your BMW.
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Our goal is to save you money, not spend it. This is why each car we service gets a free Courtesy Maintenance Inspection during its first service visit. If additional work, or service is needed, we’ll gladly advise and offer a free estimate!
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