I have a 06 plate saab 93 (1.9 turbodiesel) and I cannot turn te ignition keyat all.
The steering lock is not on (well, it wasn't but it is now after testing to check if it wason or not!!) and I believe the battery is dead as there is no power to lights etc in the car.
Would a dead battery also be the reason why I cannot turn the ignition key???!