80-90 degrees is where you want to be. If your freon is low, it may cause the low-speed fans not to operate and you could see the temp creep up to the point that the high-speed fans would kick in (around 105).

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles