'99 S70 Engine Temperature Indicator
 

I’m noticing the engine temperature warning indicator on my ‘99S70, w/148K miles (I’m the original and proud owner) comes on when starting from a completely cold engine state (e.g. first start in the morning), remains on for a few seconds, turns off and remains off while in operation. Thisis now a daily routine. It seems notto do this when starting from a warm/hot engine state. I’m guessing a possible issue with thecontacts within the heat sensor wiring. Any suggestions on troubleshooting and solution? :confused: Any pictures showing location of sensor andrelated wiring will be helpful! :rolleyes:

Thanks!

alam

Mine comes on and stays on even though there is not temperature problem. Is it throwing any codes? I'm almost certain there are two sensors. One I know for a fact is on the bottom of the coolant overflow tank. The other I saw at the parts store and it looks completely different so it has to mount elsewhere. I'll try taking a look sometime in the next few days because I'm replacing my starter and it looks like I'll be getting very familiar with the routing underneath the hood. It looks like a good amount needs to be removed just to replace the starter.:(