Especially in the summer time, when i drive my car and then turn it off, it then builds up a lot of heat within the engine while i am parked before it cools down, so much so that sometimes the A/C compressor does not engage if the temp is too high if restarted shortly after. When i do start the car, it does cool down immediately to normal temperatures. Is there a problem or is this normal? I am worried about excessive engine wear due to heat while it sits parked....Newer cars have fans that run for a while after the engine is shut off. Is there some way to get my Mercedes to do this? Thanks - Mike