COMPATIBLE WITH: VL2020 3-series BMW E46 E90 E91 E92 E93 LX8 FZV LX8FZV Key Fob KeyFob. Please, notice that to replace the battery you’ll have to disassemble the Key Fob. Replacement also requires some technical abilities. If You are not sure that can correctly disassemble the Key Fob and install the battery, we recommend you to ask a specialist to help you. The pins are located at 90 degrees! You would need to have some soldering skills in order to replace the battery.