One of the keys that came with the MIL's 116i had a flat battery die to non use. We used @[Gar]'s trick of leaving it on an electric toothbrush stand overnight to charge it back up and now it starts the car so it's still coded properly. [emoji3]
However, the buttons won't control the central locking. I assume it just needs to be programmed to the car. Does anyone know they procedure to program a rectangular key? I've inly ever done it with an old fashioned e39 style key.
Thanks
John