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Key Fob: https://www.aliexpress.us/item/2251832844453595.html?spm=a2g0o.order_list.order_list_main.21.21ef1802oOPkFg&gatewayAdapt=glo2usa Key Blade: https://www.aliexpress.us/item/2251832842093891.html?spm=a2g0o.order_list.order_list_main.31.21ef1802oOPkFg&gatewayAdapt=glo2usa Soldering Iron: Quicko T12-942 Flux: Chipquik 0:00 Disassembly 1:05 Battery Issue? 1:49 Soldering 6:30 New key fob shell "The quality overall is pretty good. The fob fits well in the ignition, possibly even better than the old one. The keyblade is high quality and fits perfectly in the door locks. The buttons felt a little stiff at first, but after breaking them in they feel great now. I suppose having this thing now will make it easier to replace the battery in the future too (non-CA) Downsides: the BMW logo is nice and shiny, but it's just a cheap sticker. The adhesive seems to be pretty strong at least. After a few weeks the sticker wore off, and I ended up replacing it with an OEM emblem. Also, the original keyfob was kind of a pain to crack open, as it's sealed shut. But with patience, I was able to cut it open after like 5 min. Some YouTube videos suggest baking it in an oven. I definitely wouldn't do that and is totally unnecessary. You just need a sharp blade."