Low coolant Light /chk engKeeps Coming on???

07 freightliner century Detroit series 60.

Freightliner has replaced 4 coolant sensor and the issue won't go away. I pulled the sensor clip and put a clothespin in it but that didn't work.

Are there wires behind the coolant tank or isbthe front wire/sensor the only wire coming into the coolant reservoir?

This light shuts the truck off immediately so it's a big problem

Also noticed the light seems to come on mainly when cruise is set...and then after it comes on for about 5 seconds it goes away...and then the cruise won't work until the truck comes to a stop again

Also was going to try and clean the sensor as the coolant could be getting carbon in it? Can freightliner test the coolant?

Help please thanks

 

Thank you.. I will talk to freightliner. Should I still have the coolant tested?

Each time the sensor has been replaced....the light usually won't come on for about a week or so....which makes me believe it takes that long before the new sensor gets dirty enough where it can't read there's coolant. The light used to stay on for a few minutes.. Right now it flashes for 5 seconds

 

It came on a few times today when I wasn't on cruise. I also notice it seems to come on more later in the afternoon after the trucks been running all day. Also... If I'm on cruise and under throttle then if I have to hit the brake and throttle abrublty stops and has set it off

 

Where are the grounds to check? Seems odd this is the only thing messing up with a bad groynd