Why does my optimized idle not work reliably?

Driving a 2018 Freightliner Cascadia. When I turn the switch in the sleeper berth with the optimized idle turned on, the air conditioner comes on like it's supposed to, but the air conditioner only runs for about 15 minutes, then turns off. And then I have to take the key out of the ignition, put it back in, and restart the process. Thanks for your help.

 

Are you putting it into optimized idle in the front first?

 

Yes

 

What is your current temperature, external/internal? And company truck or o/o?

 

How do I find out the internal and external temperature? Company truck

 

Should know your external temperature, check the dash. My suggestion would be to contact your shop guys ASAP in the AM and see if something might be wrong in the programming.

 

I have the thermostat set to 68, and the temperature in Texas right now is 83 if that is what you are asking. Too hot to sleep without the air conditioner working

 

I see it now, it says 70 degrees on the dash. It's working now, I just hope it will keep working without having to keep resetting it

 

Hopefully it keep going all night. When you say a/c stops after 15 minutes do you mean the engine a/c or the electric a/c ? They work together. If you turn on Interior Comfort Mode. The computer will start the engine and use the regular engine a/c to cool the truck. Then it will shut engine off and the electric a/c in sleeper will turn on and cool the sleeper again

If the batteries get low for the electric a/c it should start engine to recharge batteries and cool the sleeper again with engine a/c for 2 hours to recharge the batteries.

If not getting good air flow from sleeper vents the air filter might need to be cleaned

 

Both the engine AC and electric AC shut off after 15 minutes