2002 Ford Expedition Climate Control System

that is a service manual question, in the manual. SM
DLC is OBD2 scan port, 22 devices. if OPTED day one new
even 4wd.

https://eautorepair.net/Marketing/Default.asp

It sounds to me like a direct short I think you need a sparky to keep the cost down

It sounds like one of 2 things happened:
1. You blew a fuse, be sure to check the fuse panel
2. You knocked the power block to the climate control system loose. Check that the power block leading to the climate controll is tight into the control unit

Overheated??...has nothing to do with no lites on.Check your fuses 1st worse case is fried control panel.heat coming out because climate system inop

HI Shawn
first check that you don't have a stuck button
if all are OK .
then check the control unit see if You smell a burning smell coming from the control head.if so you need to replace it

I think you should go for manual first after that it would be easy for you to solve your problem. I had visited this site past 2 months before for my vehicle and find it quite helpful may be you will also get something useful here
Ford Expedition 2003 2006 WorkSHOP Service repair manual Download

First where is the coolant temp at on the gauge, If the water isnt getting to 180 to 210 then you may have a stuck open thermostat.. Its also possible your water pump impellers are deteriorated to the point they dont push enough water. This is all based on knowing that noone put stop leak in the system. Stop leak could clog the heater core but not effect the engine and it could of caused the themostat to stick open. Also its possible your climate control knob is bad. I've seen then crack. Pull it off and look. Also listen with the fan on. Listen for the doors changing. Also do you have duel climate control. If you have heat in the back but not in the front then i'd suspect a control issue. If you have the same front anfd back I would suspect a coolant issue.

replace the control head

you have a loss of vacuum. There is a small diameter black plastic tube from the engine compartment that feeds the climate controls. Check at back of control head, or there is a plastic connector under dash were other color tubes join to operate the other actuators of the system the black tube must have vacuum when engine is running. check under hood the black tube is spliced. separate the tube and check for vacuum The tube enters the firewall near the heater hoses.

Electronics involved !
The climate control seat system is able to heat and cool the front seats. Each climate controlled seat is operated by push-buttons on the dual automatic temperature controller (EATC) located on the instrument panel. Each front seat temperature is then monitored and controlled by the dual climate control seat module (dual CCSM) located underneath the passenger front seat cushion.

Both the driver and front passenger climate controlled seats are independently controlled electronically by the dual climate controlled seat module (CCSM) mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a diagnostic tool to command the dual CCSM, diagnostic testing can be carried out with the ignition switch key ON engine OFF (KOEO). The system receives power from central junction box (CJB) fuse 118 (30A) through circuit 1153 (RD/BK) feeding battery voltage into dual CCSM C3265b pins 1 and 24. If power is disconnected from either pin 1 or 24 of dual CCSM C3265b, only 1 seat will be disabled (pin 1 for driver seat, pin 24 for passenger seat), the other will remain operational. Since both climate controlled seats operate independently, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.

Sorry , but it would be best for you to take it to the dealer or someother qualified repair shop.