The day before yesterday I start getting a strange problem with my '96 GS300 Sport. Insert the key, wait for the steering wheel to assume its position, turn the key and just get a single click, no turning over. So I though s**t, flat battery. All dash lights come on as they should. Turn the key again, same thing. Take key out, put it back in and turn and the car starts up fine. Everytime I try and start her up now I have to go through various turn on/off and key removal routines. It does the same thing with both keys. Any ideas? Keys/imobiliser problem, ignition switch, battery?