02 F-350 Door Locks
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=6206
Printed Date: August 02, 2025 at 6:10 PM
Topic: 02 F-350 Door Locks
Posted By: XtremeMachines
Subject: 02 F-350 Door Locks
Date Posted: December 03, 2002 at 10:51 PM
I installed a compustar remote start alarm on my 02 Ford F-350 diesel and everything works fine but I have one question about the door locks. The compustar remote will lock and unlock my doors just fine but if I use the factory remote to lock my doors, then the compustar remote will not unlock it only locks also the unlock switch in the truck won't work. So I manually unlock the doors with the key then everything is fine again. What can cause this?
Replies:
Posted By: FourthGenHatch
Date Posted: December 03, 2002 at 11:07 PM
Just use the remote for the compustar if it still controls everything else fine, don't confuse the brain inside.
Posted By: mobiletoys2002
Date Posted: December 04, 2002 at 7:04 AM
ok heres what is happening to you the cars keyless entry remote wakes up the gem upon unlock the ford has a module called teh gem and this module loses power after a certain time after the doors are locked and in order to control the unlock feature of the new remote you must first wake up the gem and it will work. heres how to do it get your self a spdt relay and go into the drivers kick panel along teh running board there is a thick bundle of wires look for the small guage yellow/black this should be your door ajar wire nwyou need to cut this wire in half and wire to relay the side closest to the door goes to pin 87a now teh other side goes to 30 now take your unlock lead off teh alarm brain and insert a diode with the band facing the alarm send one wire to the unlock wire in the car and another to pin 85 now put 12 volts constant opn pin 86 and keepo your lock wire on the lock wire in the car .
Posted By: Velocity Motors
Date Posted: December 04, 2002 at 8:43 AM
https://www.velocitymotorsport.com/install_notes/Ford1.htm Look under the Ford GEM Wake Up diagram ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: Haku
Date Posted: January 23, 2003 at 7:13 PM
In that case, wont a programed double unlock pulse from the Alarm/Remote Start do the same thing? Shawn Siemens ------------- Hak
Siemens Autostart
Posted By: BNLUIS
Date Posted: January 23, 2003 at 7:55 PM
use this link https://https://www.directechs.com/techtips/pdfs/resources/1094.pdf set you alarm for double pulse. It works perfect I did this truck 2 weeks ago.
Posted By: Haku
Date Posted: January 23, 2003 at 8:06 PM
So... your saying that does work? The link doesnt work (Unless its my end) Also, on a 2003 F-350 does the radio stay on after igniting is cut? If so, how do you turn it off, or have it not turn on with remote start request? Im somewhat new to this, so bear with me. Shawn Siemens ------------- Hak
Siemens Autostart
Posted By: BNLUIS
Date Posted: January 23, 2003 at 8:21 PM
Okay copy and paste this one from Velocity Motors https://https://www.velocitymotorsport.com/images/install_notes/GEM_Wake_Up.jpg As far as the radio staying on you will have to trigger the door ajar wire. the problem is that it will set the alarm. In this trucks when the ignition turns off the dome lights comes on. that will set your alarm off. That is the only thing I couldn't figure out so I set the remote start for 60 minutes. givin the costumer enough time to go to the car before the RS tuns off. There is a way to take care of this but it's a lot of work. You more likely used the black \blue + trigger wire?? you can interupt this wire with a latch timer relay, so when the remote starter turs off it will interrupt the alarm tigger wire for about 35 seconds so you alarm won't go off. As for as the radio goes, don't worry it will turn off by itself after 10 minutes. Good Luck. TEST WIRES>
Posted By: camino
Date Posted: January 30, 2003 at 8:39 PM
maybe you can use a relay to open the acc that feeds only the radio.cjt work.it is wired that problem,i never have thi.well good luck. test double test your wires or the fire will tell you something is wrong,ja.
-------------
el camino
Posted By: camino
Date Posted: January 30, 2003 at 8:44 PM
how about if you use a relay to open the acc that feeds the radio.it is wired this problem,i never have this happend to me, well good luck,and test double test your wires and conection's or the fire will tell you something is wrong.ja ------------- el camino
Posted By: Haku
Date Posted: January 30, 2003 at 11:12 PM
Thanks for your input, I advised the customer that his radio would stay on for awhile on remote start shutdown without key. Dome light only stays on for 1 min. Customer did not want the radio on untill door opened feature disabled. Worked perfectly. Thanks again Jeff!!!! Siemens Autostart ------------- Hak
Siemens Autostart
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