Door locks not working - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 01-25-2017, 12:37 PM Thread Starter
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Door locks not working

I have a 97 F250 with a aftermarket remote starter with the usual lock/unlock functions.
About a year ago, i lost the majority of my unlock and lock functions in the truck at the power lock switches and on the key fob of the aftermarket system. The passenger side only has the lock function, and that is it. The one weird thing is that when you go turn the key to ON and wait for the wait to start light to turn off, the locks automatically lock like they should. Its like I have a break somewhere, but the wiring on the remote starter kit looks good. Any ideas?


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1997 F250 7.3L
DIY 6637 and 4" intake to the turbo
MBRP 3"DP to 4" exhaust to 6" custom hexagonal stack
Upgraded transmission oil pan
Pillar guages
5w40 and Donaldson Endurance ELF7405


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post #2 of 7 Old 01-26-2017, 06:42 AM
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Check/clean ALL contacts on the switches in the doors. These switches have some contacts closed even when in the "neutral" position; something to do with how current flows so either switch operates both locks, and how they reverse polarity based on which way you rock the switch. The auto-lock feature probably bypasses the door switches and goes right to the solenoids, which is probably why it works even with inop door switches.
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post #3 of 7 Old 01-26-2017, 03:19 PM
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...just a funny note, my OEM key fob lock/unlock doesn't work below freezing!

have to use a key, and the keys are all worn SO much they barely open the door locks...ignition no problem.

so..imagine some old fart fiddling around with cold fingers trying to get into his rig......LOL!


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post #4 of 7 Old 01-26-2017, 04:35 PM
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Have you replaced the batteries in the fob?


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1999 F 350 work trucks 7.3
5 speed 2 wd dually
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post #5 of 7 Old 01-26-2017, 05:01 PM Thread Starter
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I haven't replaced the batteries in the fob, and now that i think about it, I'm pretty sure it is able to lock the truck. And my locks are on the way out so sometimes I cant even get the driver door to unlock, and need to use the passenger side. I think ill try and do some continuity tests between the remote unit under the dash and the terminals in the lock switches.


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1997 F250 7.3L
DIY 6637 and 4" intake to the turbo
MBRP 3"DP to 4" exhaust to 6" custom hexagonal stack
Upgraded transmission oil pan
Pillar guages
5w40 and Donaldson Endurance ELF7405


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post #6 of 7 Old 01-31-2017, 01:57 PM Thread Starter
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Update: Fixed the locks! Its been more than a year, and I finally got tired of reaching over to open the passenger door for people. Through inspection, I found a broken wire in the rubber gasket/sleeve that goes between the truck and the door. Everything works now!

This makes tons of sense to me now, lock would work on passenger side, nothing else. Key fob lock would work. So this broken wire was part of the unlock wiring, and basically disabled that portion of the system.

I'm a happy camper now!


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1997 F250 7.3L
DIY 6637 and 4" intake to the turbo
MBRP 3"DP to 4" exhaust to 6" custom hexagonal stack
Upgraded transmission oil pan
Pillar guages
5w40 and Donaldson Endurance ELF7405


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post #7 of 7 Old 02-14-2017, 10:34 PM
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Glad that it was an easy fix! I love it when that happens! Great looking truck BTW.
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