then you best get a portable massager, hold the key with small vise grips and massage the key while rotating it, it might move, to replace that ignition lock without the key able to move to position 2 is ummm, a heck of a job. I think a company called sauber made a pilot drill for the benz but im not sure.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)