The solutions I guess would be 1) install a remote start (there's a write up on it somewhere on this forum) or 2) avoid valets.

I choose the latter because with mine, the average valet won't understand the pull/push start switch on the old diesels, and not only would there be a starting issue, I cringe thinking of someone trying to turn the key off without pushing the knob in to stop the engine first. Then there's the "pull up" interlock for reverse gear on the manual transmission - that's asking for trouble too, not to mention my bad 1st & second gear synchros (how many people habitually double-clutch these days?)

I was in Pasadena, CA a few years ago and happened by a big fundraiser event where all these movie-star types were headed into a mansion dressed in their expensive clothes. The "valets" (college kids I'd bet) were parking cars along the residential street which was on a slight hill. I watched one grind gears, stall a few times, and hit the curb a few times too while trying to park. He seemed amused by it, too. Good thing the owner didn't see it and the car wasn't a Lamborghini or anything. And you're supposed to TIP the valet after they mess up your car?

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1976 240D "Katja"