I would suspect that there should not be too much damage other than to the cooling system since you ran at high temperature for such a short time. If you had been running at 105 degrees for an extended interval then there might be cause for concern. Best way to know for sure though is to ask your mechanic tomorrow when the cooling system is fixed.

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Jason Priest
1999 E430
1995 E420 - retired
1986 420SEL - retired