I let my truck sit for about 10 days while on Thanksgiving vacation. The battery must be a little weak. When I cranked the truck the system reset. Everything was fine except the Heater and A/C controls. The heat came on and blew but the screen shows in Celsius not Fahrenheit. It is a 2003 F-150 King Ranch S-Crew.

Can anyone help on this? I looked in the owners manual and could not find anything, I'm sure it is just some crazy thing where I have to push the brake and gass while holdiong my breath all at the same time.

Thanks

 

Try pushing the Max AC and the Defrost button at the same time and it should change instantly. Make sure the system is on.

 

Torkum,

That work great, Thanks.

I got one more question. I have no air coming to the floor. even when it is set to the floor it blow out on the windsheild.

If anyone can help It is appreciated.

Will

 

Sounds like you don't have vacuum to the actuators. Look for a cracked hose between the battery and the firewall, its the vacuum line going into the firewall.