Originally Posted by BanziBarn
What spare key thing is that?
Before LCI the E90 had a spare key in the glove compartment. First one opened the door with a flat key you could keep in your wallet. You slotted this into the 'key' in the glove compartment which inabled one to start the engine.
Don't think by smashing the window and using the key in the glove compartment one could start the engine. You had to have the flat key to slot in, then start the engine.
I am going on memory and stand to be corrected!