So my daugther tries and tries, but can't get the key to turn in the ignition (1992 300D). Calls AAA, they send a locksmith. Locksmith tries various things, but eventually breaks the key off in the ignition. So the car gets towed.

The Mercedes tech (very reputable and experienced guy) tells us that, because the locksmith broke the key, the repair will involve significant additional expense; and that, at least with a Mercedes, if the key won't turn you simply need to get it towed. So, just for my amusement, I called the locksmith. His claim is that, in a situation like that (where the key absolutely will not turn), the repair that's needed will be the same parts and labor whether or not the key is broken off. Therefore there's no financial risk in trying to force the key.

I'm inclined to believe the MB tech. What are your thoughts?

We'll certainly be pursuing the matter with AAA, so I'm trying to get my ducks in a row before we file a claim.

Thanks.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife