1996 S320 Normal Engine Temperature
These cars should run at about 80-90 under normal operating conditions (city driving stop start traffic etc) At highway speed the car should be cooler because the speed of the car is forcing air into hitting the radiator. A little bit of movement in the temp is normal if your worried about high temp all the time then change your coolant if it's getting old that should sort it out a bit.
If what your talking about is the outside temp sensor display in the cluster (the digital one) then whatever the temp is outside it should read about that. it will also be effected by engine temp too. It's really designed to give an idea of the temp of the road surface to check for ice or melting tar.
These cars should run at about 80-90 under normal operating conditions (city driving stop start traffic etc) At highway speed the car should be cooler because the speed of the car is forcing air into hitting the radiator. A little bit of movement in the temp is normal if your worried about high temp all the time then change your coolant if it's getting old that should sort it out a bit.
If what your talking about is the outside temp sensor display in the cluster (the digital one) then whatever the temp is outside it should read about that. it will also be effected by engine temp too. It's really designed to give an idea of the temp of the road surface to check for ice or melting tar.



