In the R1250RT User Manual (2021) the replacement battery for the Keyless Ride radio-operated key (Fob) is shown as a CR 1632 (Page 63). Not so. The correct size for this battery is the CR 2032. The manual must be punished! Society must consider both Rights and Duty. If duty is compelled, citizens may feel their rights abridged. Remove the two yellow connectors from the hood lock left and right. That is all you need to do before coding the car. After that you need to edit VO, remove 8TF option, and save you modified VO. Under the VCM upload the modified VO, click "Write FA FP" and go to EXPERT MODE -> CODING and code your ACSM module. Product Number: 10-4920-2 Manufacturer's Part Number: ELU49/L5/H8. SPECS - GROUP #: L5/49/H8 - CCA: 850 - CA: 975 - RC: 170 - GROUP #: 49 - CCA: 850. I'm sure you'd find more choices and better prices in US. Physical installation was a breeze as well as new battery registration using Foxwell NT510 scanner tool. G. 2007 BMW X3 [0.00] 2013 BMW X5 [0.00] Key fob battery - non-CA. Merry Christmas everybody. 2013 E70 Started getting a warning that battery needs recharging on key fob. This is the sealed type so the battery is not intended to be owner replaced. Has anyone had luck breaking the case open and replacing the battery? HOW TO REPLACE KEY FOB ON BMW F10 F11 F30 F31 F32 F36 X3 X4 X5 X6 BMW PARTS: Key Fob stopped working all of a sudden. Hello Bimmer Gurus! I have a 2011 535i xDrive with comfort access and 56,xxx miles. The vehicle has always been a nice drive and everything works. Two days ago, went to get a hair cut, came out and couldn't open my doors normally with the fob is my pocket. Took the fob out and tried to manually open it Both say be very careful in selecting the battery -- must be a real Panasonic VL2020, and not the CR2025, ML2020, etc. The "pro" said go with the 180 degree leads, modify both leads, and solder on a short piece of wire to one lead not the battery itself to prevent heat damage (see his pics). BMW key fob battery replacement 5 and 7 series. This will help you if you need to change the key battery in this type of BMW key. It is a CR2450 battery Tran It is possible that the Energizer batteries can't supply enough current for the key and the voltage drops too low. I looked at the battery datasheets, but the load current has not been specified by either manufacturer. These batteries were designed for a very small load. My F11 keyfob has a much larger CR2450 battery.. Consumers today have various options to obtain a replacement BMW key. Of course, a main BMW dealer is always an option - usually more expensive. A clone key is also an option. We do not recommend these due to some problems which can occur during diagnostic procedures. We strongly recommend that if you are going to have a replacement BMW key 1O1CZm5.