mr7743
Member
Hey fellow ford owners,
I've got a puzzling 4x4 issue on my 2005 Expedition that I just picked up. Here's what's happening:
- 4x4 lights work during startup check
- When I engage 4x4, no lights turn on
- Auto 4x4 seems to work (message center confirms, tested in sand)
- 4HI light doesn't turn on when 4hi is turned on
- 4LO won't engage (keeps prompting to shift to neutral)
- IWE seems OK (vacuum to wheel hubs turns off in 4HI, 22+ inHg steady in 2HI)
What I've checked/know:
Lights are definitely not burned out (work on startup)
IWE pressure switch might be involved with lights according to one post I found on here? I've yet to confirm this
Any ideas what could be causing this? Any ideas on possible next diagnostic steps?
Thanks in advance for any help!
I've got a puzzling 4x4 issue on my 2005 Expedition that I just picked up. Here's what's happening:
- 4x4 lights work during startup check
- When I engage 4x4, no lights turn on
- Auto 4x4 seems to work (message center confirms, tested in sand)
- 4HI light doesn't turn on when 4hi is turned on
- 4LO won't engage (keeps prompting to shift to neutral)
- IWE seems OK (vacuum to wheel hubs turns off in 4HI, 22+ inHg steady in 2HI)
What I've checked/know:
Lights are definitely not burned out (work on startup)
IWE pressure switch might be involved with lights according to one post I found on here? I've yet to confirm this
Any ideas what could be causing this? Any ideas on possible next diagnostic steps?
Thanks in advance for any help!