[AlteBMW]

Theorectically you could repair the key, IF (1) you could find another "donor" key (maybe ebay, maybe junk yard) and (2) you could open the donor key without damaging it and put it back together. There are no visible screws on mine, just what looks like a joint that would have to be pried open. Sort of like a cell phone that needs a plastic spudge. Since your key is already damaged you could try and see what happens. (I also don't know how the integrated circuits are arranged inside (for example, what is embedded in the screen and whether there is any damage to the circuitry now. If the key still works this should not be a concern). It would be a gamble to see about using a donor key. Safest is of course to get the dealer to replace , but that is going to be pricey. Or, if you don't have RC parking, just get another regular key if you need one.