ford keys losing program
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=50631
Printed Date: May 18, 2024 at 3:41 PM
Topic: ford keys losing program
Posted By: dcd88
Subject: ford keys losing program
Date Posted: February 22, 2005 at 4:32 PM
Recently I installed a matrix 3.5 rsx in a 1998 expedition.Everything works fine except all of the keys lose there program except the key in the 556u.The only way to start the car is to remote start it,put the key in and hit the brake and it runs as usual.Have tried to reprogram the keys but it still does the same thing.
Replies:
Posted By: profuse007
Date Posted: February 22, 2005 at 6:09 PM
have you try hookin up the key sense wire to the ford's keysense? i would try not to let the system see both key at the same time... just a thot.
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Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).
Posted By: chris354
Date Posted: February 22, 2005 at 7:26 PM
I believe the 556u is staying on all the time and thats why it wont start with the key. Had that happen to me with a 555u . I would unhook the status output going to the 556u then try the keys. My problem was a bad rs unit kept ground output all the time If you have anything else hooked to status output make sure it is dioded.
Posted By: gus1
Date Posted: February 23, 2005 at 10:10 AM
Yes.... the loop is "on" on the 556U all the time. They do this so that when you are hard wiring into say a VW, Audi, BMW, Hyundai factory antenna, the factory system is still intact.
Use keysense.... I believe it is positive, BLACK/ pink on plug on right side of column. This will open the loop circuit of the 556U when the key is inserted, and the vehicle won't see 2 keys at any given time. Bit of a PITA, yes, but, no biggie.
Gus
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Wherever I go, that is where I end up......
Posted By: chris354
Date Posted: February 23, 2005 at 2:30 PM
No the 556u should not be on all the time if it was that would be bypassing the anti theft system all the time, so you would be able to start it with any key. If the 556u is working right it will only transmit the signal while remote starting.The keysense wire is for when you place the key in the ign. it will turn off the 556u because on some cars they can not see 2 key codes. On most fords once its running it dooes not matter if it sees another key or not.
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