24mm?!?! thats pretty huge. i couldnt really find it. is it under the thing that pulls out like a tray right under that knob(emergency lights or something)? hehe. sorry its actually my friends car, im trying to help him out. i did take out a phillips head which you can only see or utilize when u pull the tray-handle-thingy out.

can i use graphite? what kind of teflon spray should i use?

i can only replace the key at the dealer?