Hi,
Is it normal for the temp gauge to rise between 80 and 100 on the(w220) s500's, mine does this on hot days or when i drive a little aggressive.

 

It is ok for the temp gauge to be at 100'C, especially on hot days and in traffic. When time permits, consider a cooling system flush, including coolant reservoir clean out, and refill with good quality antifreeze 50/50. Oil change places and of course the dealer can do this if beyond DIY.

 

mine is usually between 80*- 85*C
even on hot days. also clean out your radiator & a/c condensorfins with compressed air or water.

 

Thanksfor the info guys.