Yes.
I believe the 2003 - and newer have the LATCH System. Check related link below... How the LATCH System Works on Car Seats
I have a 2002 Jeep Grand Cherokee Laredo...It does NOT have a latch system.
I'm not sure if they are the same or not, but I had the same problem with a 2000 Ford Ranger. The fix given on another web site for the Ranger is to spray the door latch (in the hole on the edge of the open door that mates with the latch device on the door jamb) with WD40. If the Expedition system is like the Ranger, the light switch is in door latch & WD40 will fix it for a few months, at least. Hope this works.
The 2008 Ford Expedition has a V8 engine.
The 2008 Ford Expedition has 24 valves.
28 5A Radio 2008 Expedition
The 2008 Ford Expedition has a 6-speed automatic.
The 2008 Ford Expedition is a gas-powered vehicle.
Probably inside the door latch mechanism
there should be a latch or your drivers key will open it
Do not exceed the weight of 45 lbs on any Latch system.
The 2008 Ford Expedition has a 22.8 degrees angle of approach.