Hello all! We’ve got an 85 300D. A few months ago, out of the blue, the key wouldn’t turn. After looking online, I found that this is common on the older Mercedes. I got it to finally start and took it straight to the shop. They replaced the ignition cylinder. So now it has a new key for the ignition. It was fine for a few weeks but now it does it again from time to time. So far, I’m able to wiggle the key and force the wheel lock back and forth and it’ll start. It’s my girlfriends primary transportation. She doesn’t feel she can rely on it. It seems it’s not so much the ignition cylinder but the steering wheel lock. Could this be disabled? Anyone else go through this? Thanks!