Hints, Tips and Tricks
5 Year Member
Joined: Sep 2015
Posts: 2,585
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From: USA
Senior Member
Joined: Jun 2016
Posts: 151
Likes: 46
From: Houston, TX
Junior Member
Joined: Sep 2016
Posts: 12
Likes: 0
I'm fairly sure that unless you tell the truck you are there, e.g. touch the door handle or press the button on the door, the ECU isn't going to respond. When you touch the handle to open the doors or press the button to lock the doors it tells the truck to send a signal out to search for the fob to see if it's the right one to unlock or lock the doors. So leaving the fob in the truck isn't going to do anything to the truck's battery. Now leaving your fob in the truck in sub zero weather might drain down the fob battery but you can always use the keypad to open the doors and then put the fob in the hidden compartment since that's where the sensor is and unless the fob battery is dead the truck should work until you can get a new battery for the fob.
Thanks again.
Senior Member
Joined: Oct 2011
Posts: 540
Likes: 81
From: N. NJ
I've been thinking about the Intelligent Access fob, and I have a feeling it must be a 'dual' system. The first system is some type of RFID (like an EZPass) and works like moguy1973 described. The battery in the fob may only be used for the second, 'transmitter' portion of the fob that allows unlocking from a distance, remote start, etc... If this is the case, the truck should still start with the key in the truck but no batteries in the fob, but I haven't tested this myself. It would make sense, though, so you wouldn't get stranded by a dead battery in the fob, and would explain why Ford didn't bother with a physical 'backup' ignition.
On a side note, I came across this while trying to confirm my theory via the manual:
Pretty handy if you leave your kids or pets in the truck with it running. They won't be able to accidentally (or on purpose) put it in gear (like I did when I was a kid and my uncle left me in the car to run in and grab smokes....).
On a side note, I came across this while trying to confirm my theory via the manual:
You must have your intelligent access
key in the vehicle in order to shift the
transmission out of position P.
key in the vehicle in order to shift the
transmission out of position P.
5 Year Member
Joined: Sep 2016
Posts: 460
Likes: 106
From: Long Island, NY
I've been thinking about the Intelligent Access fob, and I have a feeling it must be a 'dual' system. The first system is some type of RFID (like an EZPass) and works like moguy1973 described. The battery in the fob may only be used for the second, 'transmitter' portion of the fob that allows unlocking from a distance, remote start, etc... If this is the case, the truck should still start with the key in the truck but no batteries in the fob, but I haven't tested this myself. It would make sense, though, so you wouldn't get stranded by a dead battery in the fob, and would explain why Ford didn't bother with a physical 'backup' ignition.
On a side note, I came across this while trying to confirm my theory via the manual:
Pretty handy if you leave your kids or pets in the truck with it running. They won't be able to accidentally (or on purpose) put it in gear (like I did when I was a kid and my uncle left me in the car to run in and grab smokes....).
On a side note, I came across this while trying to confirm my theory via the manual:
Pretty handy if you leave your kids or pets in the truck with it running. They won't be able to accidentally (or on purpose) put it in gear (like I did when I was a kid and my uncle left me in the car to run in and grab smokes....).
I agree a million percent.
Senior Member
Joined: Sep 2016
Posts: 121
Likes: 33
From: Southern Maryland
Ha ha.. interesting that some of the WikiLeaks items talked about her separating out by list, the "Friends of Bill" when deciding who she would meet with (people who had donated money based on whether or not Bill would speak at their event).... the list was called "Friends of Bill".. or FOB.
ha ha...
ha ha...
Senior Member
Joined: Oct 2010
Posts: 2,157
Likes: 518
From: Southwest
The radio in my truck works without the key on.
