Went out to start my car this morning, a 98 M3 sedan, placed my key in the ignition, gave it a turn and it turned and turned and turned! completely around, 360 degrees! and didn't engage the starter. Thinking this was rather odd, I removed the key with a puzzled look on my face, glanced at the key and ignition cylinder and tried again. This time the key turned about 3/4 of the way around before the starter engaged and the engine started. No warning lights illuminated on the dash and no error messages on the OBC. No bells, whistles or alarms went off. Drove it a few miles and ran a few errands. Got my haircut and when I came back out to the parking lot, the car started right up normally, no problems. Went home and pulled out the trustly Bentley manual and did a little search in the ignitions.
Decided the problem was one of several things. Either the ignition lock cylinder, the ignition switch ring antenna, the entire ignition switch assembly unit, or possibly the EWS II control module. Mostly guesses on my part, but before I delve too deeply into my system, I was wondering if anyone else ran across this sort of problem.
Looking forward to numerous responses :P