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3 button to 5 button FOB upgrade

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Old 06-09-2019, 02:10 PM
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Curious what you have at this location in the BCM. 726-39-02 xxxx xxx* xxxx TwoWay RKE Enable Cfg: 0=disabled, 1=enabled
Old 06-09-2019, 03:36 PM
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No.. its the other style.. but in my case the truck came with the three button FOBs. I am trying to add a five button FOB as shown below. I am not sure of my truck has the hardware to support it. It came with remote start and the power tailgate so it seems reasonable this should work.


Old 06-09-2019, 04:48 PM
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Originally Posted by lakeguy51
No.. its the other style.. but in my case the truck came with the three button FOBs. I am trying to add a five button FOB as shown below. I am not sure of my truck has the hardware to support it. It came with remote start and the power tailgate so it seems reasonable this should work.

Are you sure it originally came with 5 button fobs? I have a Lariat 500a and mine are only 3 button. Like these.


Do you know for sure you have a 501A?
Old 06-09-2019, 08:02 PM
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Originally Posted by i8iridium
Curious what you have at this location in the BCM. 726-39-02 xxxx xxx* xxxx TwoWay RKE Enable Cfg: 0=disabled, 1=enabled
I will need to get setup with Forscan and give it a shot. Do you know whether the individual button codes transmitted by the FOB are the same between the 3 and 5 button FOBs ?
Old 06-09-2019, 08:08 PM
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Originally Posted by Pioneer74
Are you sure it originally came with 5 button fobs? I have a Lariat 500a and mine are only 3 button. Like these.


Do you know for sure you have a 501A?
I got a copy of the sticker and it appears I have the base 2017 Lariat 500A.. It has remote start via Sync Connect and Fordpass along with the power tailgate unlock. The FOB only has three buttons of the style I posted earlier.
Old 06-09-2019, 08:17 PM
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Originally Posted by lakeguy51
I got a copy of the sticker and it appears I have the base 2017 Lariat 500A.. It has remote start via Sync Connect and Fordpass along with the power tailgate unlock. The FOB only has three buttons of the style I posted earlier.
If you have a 500a the 3 button remote is the correct FOB from the factory. I also have Sync Connect as an option but that is different than the remote start from the fob. I had wondered if the 5 button remote would give remote start abilities, along with the tailgate release that already works from the keypad, but I was looking at this fob.


Old 06-10-2019, 05:32 AM
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Originally Posted by i8iridium
Curious what you have at this location in the BCM. 726-39-02 xxxx xxx* xxxx TwoWay RKE Enable Cfg: 0=disabled, 1=enabled
Honestly I'm not sure. I didn't even know they made a 3 button FOB for the Lariat until yesterday. lol
Old 06-10-2019, 10:19 AM
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Mine is a 2015 500a so this may not be the same in later models.

I upgraded from this one which came with the truck:
https://www.ebay.com/itm/NEW-OEM-FOR...ss!20854!US!-1

To this one:
https://www.ebay.com/itm/OEM-FORD-KE...4AAOSwU2tc8V-L

And everything works on the new remote including the tailgate release. My understanding is that if I had purchased the 501a or 502a remotes it would not have been compatible with my truck.
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Old 06-10-2019, 02:09 PM
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3 button versus 5 button are different frequencies and the receiver antenna is different.
Old 06-10-2019, 03:01 PM
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I almost bought the 5 button. Good thing I didn't.

I have a remote from a 2017 Escape Titanium my wife had that we traded in. I'll check the frequencies on that when I get home to see if it will work.


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