Electrical problems..Ignition?
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Junior User
Joined: Dec 2005
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Electrical problems..Ignition?
Started having some issues with my 01 supercrew last night. The doors would not lock with the key fob. I thought maybe the battery was bad in the key fob and tried it a few times later on with intermittent results. I did notice a noise coming from underneath the dash after I had locked and unlocked the doors.It carried on for about 5 seconds or so and then stopped. This morning my battery was completely dead. I suspected something to do with the locks but after I boosted it and got it running I noticed the fan on the heater motor continued to keep running even after I had turned off the ignition! Any ideas what the heck is going on?
Laughing Gas
Joined: Jan 2006
Posts: 1,098
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From: Minnesota
Are you sure it is the heater fan blowing or the fan for the CD player behind the radio. I know if your vehicle battery is low the door locks will sometimes cycle up and down for no reason. Just been thru some of this stuff lately myself.
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Junior User
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I didn't try the radio as I had all systems turned off trying to get the battery charged. I didn't notice the clock on though so I think the radio shut down ok.
I just went out for a little test drive to try out my new thermostat.When I got home and turned off the key everything seems to be working normally again.Even the locks. However I sat in the truck for a minute afterwards and the ticking sound from below the dash is still there.
I just went out for a little test drive to try out my new thermostat.When I got home and turned off the key everything seems to be working normally again.Even the locks. However I sat in the truck for a minute afterwards and the ticking sound from below the dash is still there.
Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
I would guess yours has a battery saver circuit? That stays active for IIRC about 45 minutes after you shut it off. I would guess there is a relay for that, but where it's at I have no clue. Just tossing this out.
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Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
I found this thread while searching. I am also having a dead battery every now and then and it drives me nuts looking for what can do it. I actually froze my battery one night when it was way below zero and it went dead....I mean DEAD. Read thru this...https://www.ford-trucks.com/forums/4...hut-off-2.html
Post Fiend
Joined: Apr 2002
Posts: 19,311
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From: Waterloo, Iowa
This is one reason why it can be problematic to try and jump start somebody. The manufacturers claim a frozen (partially?) battery can explode, don't know for sure, not inclined to test that. Probably not healthy for alternator either.
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