20 Most Recent 2003 Ford Expedition Questions & Answers

Question edited for clarity. Question moved to model category. It is a known issue when you change the brake light switch. It says in the link it has to be reset. https://www.google.com/search?q=2003+Ford+Expedition.+I+changed+the+brake+light+switch+on+it+and+the+cruise+control+stopped+working ..

It's blank off and on

In the link https://www.fixya.com/cars/r26142776-want_bypass_vehicle_security_system ..

You disconnected the battery. Reset the anti-theft system and engine immobilizer. https://www.google.com/search?q=2003+ford+expedition+anti+theft+reset ..

It could be a bad door ajar switch on the tailgate. You would have to put a scanner on it to see which door the computer tells you is grounded.

I just solved a similar problem with the right rear pax window by replacing the rocker switch..You don't need to take the panel off, just remove the cover on the front of the arm rest where the switch resides...Good luck. New switch is about $90.

could be the multifunction switch. there may also be a headlight relay for just the high beam. check the manual for its location

Your missing something's G-404 has nothing to do with it ! Seats - Third Row The third row seat:

• is three-passenger seat.
• a 60/40 bench seat.
• folds down for more cargo area.
• has optional power fold down seats.

Third Row Power-Fold Seat CAUTION: To prevent possible damage to the third row seat or the safety belts, make sure that the safety belts are not fastened when moving the seat to the load floor position. CAUTION: Make sure that no objects such as books, purses or briefcases are on the floor in front of the third row seats or on the seat cushion before lowering the backrest(s). The third row power-fold seat consists of the following electrical components:

• right third row seat relay.
• left third row seat relay.
• right power-fold seat motor.
• left power-fold seat motor.
• right front third row seat switch (if equipped).
• left front third row seat switch (if equipped).
• right rear third row seat switch.
• left rear third row seat switch.

For the third row power-fold seat to operate, a shared ground is supplied by the body security module (BSM) to both of the power-fold seat relays, enabling the seats to then be moved by pressing one of the third row power-fold seat switches. The third row power-fold seat operates only when the vehicle is in PARK and the liftgate glass, liftgate door or any entry door must be open. The third row power-fold seat motors transfer movement to a drive gear assembly to raise and lower the seat backrest. The power-fold seat motors rotate a short drive cable which is connected to the drive gear assembly. The relay's are located in Aux. relay box #2

I have the 03 Expy with continuous rear air unit "clicking" or more accurately flapping of the air damper while the plastic gears in the 2L2H-19E616-AA grind away into toothlessness. Ford designed this unit to find the end of travel by jamming the motor to a stop and monitoring the current to determine when to stop applying voltage. That would probably be fine if the gears were designed to handle the jammed torque or the motor did not slip out of groove and continue turning and cracking the plastic gears.

There are two white colored boxes, one is for the temp plenum door, the other the upper/lower air flow. To be sure, do what I did, turn on the ignition, rear ac/heat and listen for the obnoxious click/thump as you move the temp control from full heat to full cool, you will know which part. Disconnect the electrical connector, four bolts and it is out!

Go to your dealer, part should be about $60 or less, look on line, lots of dealers sell for this or less on internet.

Any idea what might be draining the battery ? That would be guessing , doing a elecrical test, parasitic drain or draw . Checking for current flow over the fuse's till you find to much current draw is the easiest way . We test , not guess . Guessing cause the replacement of parts that don't need to be replaced . Improved Methods to Find Parasitic Draw Battery Drains Overnight The BEST Way TO Perform Parasitic Draw Test How To Perform Parasitic Draw Test EricTheCarGuy

That would typically mean your alternator is going bad.

With drivers door open. Turn key to full on position to have full instrument lights. Then lock all doors from driver door switch. Driver door does not lock. Then turn off ignition. Remove key. Close driver door. Lock driver door with key. Alarm will not activate. Doors will be locked.

14 volts charge is correct. Standing voltage on a good fully charge battery is 13.2 volts or so. I check one on charge with a 6 amp charger and it was 14.2 volts. It dropped to 13.8 with charger off.

If replacing the blower motor resistor (under the passenger side dash, mounted on the front blower motor assembly) does not fix the problem, then the other likely candidates are listed below. (in your case, since both the front and the rear blower motors are not working, it is most likely #1 or #2, but it could still be #3. Hope its #1 or #2, which are both inexpensive to replace: 1. Blower Motor fuse. The blower motor fuse is located in the ENGINE COMPARTMENT fuse box (not in the inside the vehicle dash panel fuse box). It is the 40 amp (Orange) fuse located in the 4th position from the metal clip side. To open the box lift the plastic tab on the box end away from the box, until the lid lifts up. It is hinged on the other end. The 40amp Orange Blower Motor fuse is sandwiched between 3 RED 50 amp fuses on one side, and a 30amp and siver-metal-cased, and 20 amp fuse on the other side, in the central column of the fuse box. This is the most common failure of the system. You can pull the fuse with a pair of pliers, and inspect it. If blown, the metal u-turn shaped wire ribbon in the fuse will clearly have a burned break in it. Or you can test it with the continuity setting of a volt meter. A good picture is available at the URL below. https://i.ytimg.com/vi/joAmtVZL_ck/maxresdefault.jpg 2. Blower Motor Relay. (Located under the dash, on the driver's side, to the RIGHT of the driver's steering wheel). It is in a block of 3 or 4 relays, see the owners manual for which one, or swap in a new relay to each of the 4 positions one at a time. All four relays use the same standard Ford relay component.) DO THIS STEP ONLY AFTER CHECKING THAT the FUSE IS GOOD (in step 1). 3. Blower Motor electronic speed control unit is bad. (under the dash on the passenger side behind the glove box. To get at this you must remove the glove box rear backplate (6 screws, 2 on the latch, 2 others on the top, 2 at the bottom on each edge. The one at the bottom console edge is hard to find, but its there.) Then unbolt and replace with a new electronic controller unit. Expensive from dealer, I would get one at a junk yard, self pull if comfortable with DIY, and otherwise pay more for it to be removed by the yard, or a yard puller hire-able employee.) Unbolt the controller, and unplug it, plug in and bolt in new one. ONLY ATTEMPT #3 if you have checked BOTH #1 and #2 first. #1 is by far the most common #2, next most common, the controller least common (but the do fail sometimes.)

Download owner guide first printing from below link

http://www.motorcraftservice.com/vdirs/SPubs/default.asp?TYPE=OWNERGUIDE&pageid=oghome&gutsid=spubs_serv_all_new&MARKET_LANG=US-EN&YEAR=2003&VEHICLE=Expedition

after downloading go to page number 231 where you get the fuse box diagram
fuse for the radio is #7 in the fuse box diagram

it works completely

You will find the diagram under the cover of the fuse box. But if its missing, refer to this link to find the fuse map for your car: https://www.autogenius.info/ford-expedition-2003-2006-fuse-box-diagram/

"The hot water check valve line runs into the firewall..it goes to the port closet to the passenger side. The main vacuum hose from the engine runs across to the canister behind the battery. There are two check valves in the main line. 1st check valve is close to the engine and its just a straight valve and the other check valve is close by the computer and has a tee built in it. The tee part runs down to the only and last port running into the firewall and there you have. Air and heat coming out the vents or defrost when you command" Someone else did the hard work for me. Good luck.

sounds like water in gas. add gas line antifreeze. 2 bottleshould do it.

check the seliniod under the shifter mine was faulty so i got an electrician to by pass till part came in

i know this is an old post but this is happening to my truck to, ford expedition 2003, after swapping the relays i can get it to work but now is happening more often about once a week, sometimes i have to swamp several times until it starts. Any suggestions?