This question comes up from time to time on all the MB forums for all engines, and from ...
This question comes up from time to time on all the MB forums for all engines, and from reading the dozens and dozens of posts from the techs, 110 degrees is not considered hot. Some guys have called MB USA and were told the same thing. You can run your car all day at 110 and no damage will result. At 110, though, your secondary electric fan should come on, and promptly cool your car down to 100 degrees. At 100 degrees the thermostat turns the fan off.
I think the thing that scares people is that the temp gauge on Mercedes is a real gauge that shows what the temperature is instantly. All other cars, including BMW's, have buffers built in that prevents the gauge from moving until the engine gets real hot, and then the gauge starts to move up closer the red zone. We are all used to the temp gauges on Japanese and American cars where the needle on the temp gauge stays well below the halfway point and never really moves.
Also, FWIW, the fan clutches are said to very seldom go out. Some techs have posted that they've never replaced them.
This question comes up from time to time on all the MB forums for all engines, and from reading the dozens and dozens of posts from the techs, 110 degrees is not considered hot. Some guys have called MB USA and were told the same thing. You can run your car all day at 110 and no damage will result. At 110, though, your secondary electric fan should come on, and promptly cool your car down to 100 degrees. At 100 degrees the thermostat turns the fan off.
I think the thing that scares people is that the temp gauge on Mercedes is a real gauge that shows what the temperature is instantly. All other cars, including BMW's, have buffers built in that prevents the gauge from moving until the engine gets real hot, and then the gauge starts to move up closer the red zone. We are all used to the temp gauges on Japanese and American cars where the needle on the temp gauge stays well below the halfway point and never really moves.
Also, FWIW, the fan clutches are said to very seldom go out. Some techs have posted that they've never replaced them.
