Automatic locking doors - anyone solve this riddle?? - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 12-19-2008
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Automatic locking doors - anyone solve this riddle??

Did a search but only found 2 old dead ends. Wondering if one of you vets know how to do this?

I'm looking to find a way to have auto locking doors, such that when the truck is put into D etc. the doors will lock. I think that auto unlock isnt such a big deal because wont the doors open from the inside even if theyre locked if youre parked? Cant remember ...

Anyways I dont want to add an alarm system, Ive already got power locks, so is there some wiring that can be added to accomplish this? Aftermarket parts to do it like the alarm systems but for cheap $ and without the sirens and flashing lights would be nice.

Thanks!
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Old 01-06-2009
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  #3  
Old 01-06-2009
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excellent info! thanks
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Old 01-06-2009
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He already has the power locks...
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  #5  
Old 01-06-2009
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I tried this and the programming seemed to work. I got the correct beeps and all... Unfortunately it still didn't work!


1. close all doors
2. with the key in off turn to run than off 3 times last one in the on position
3. press the unlock button three times
4. ign. to off
5. press the unlock button 3 more times
6. turn ign. to run
7. horn will chirp
8. unlock once to disable. If you want it too arm press lock
9. turn key off horn should chirp.

If this doesn't work then take it to a dealer for them to do it.
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  #6  
Old 01-06-2009
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yea and keyless entry, but that gives me an idea of how to wire up a relay to make this work.

or something like this: http://rav4world.com/pdf/2006/auto_l...lation_4.3.pdf wired to the reverse light might work :)

EDIT: wow thats a fun procedure :)
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Old 01-06-2009
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ya just take your time and do your homework and you can do it with some relays.
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Old 01-06-2009
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Kinda a noob question but could this be done with a manual transmission??
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  #9  
Old 01-06-2009
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I believe so but I think it would have to be relayed to the ignition switch or something instead
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Old 01-06-2009
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Quote:
Originally Posted by 04blackedge View Post
He already has the power locks...
Oops..my bad about the locks,,,but the point for the relays remains the same..
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Old 01-06-2009
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I dont know why but when its really cold out lately and i go to turn my truck on it the doors lock lol
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Old 01-06-2009
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Originally Posted by DisturbedESV View Post
Kinda a noob question but could this be done with a manual transmission??
You could probably run something off of the speed sensor.
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Old 01-07-2009
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I dont know why but when its really cold out lately and i go to turn my truck on it the doors lock lol

I have that issue sometimes too. I think it is a weak battery. When it does it the engine turns slow also.
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  #14  
Old 01-07-2009
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here is what ive gathered:

going to use a SPST relay like this:


#86 - connect to backup light power (black/pink on my 2003 (?))
#85 - ground
#30 - connect to door LOCK switch (pink/yellow on my 2003 (?))
#87 - ground

not 100% on above wiring. possibly #87 should not be grounded but rather connected to a 12v constant or the backup light power. maybe #86 should be constant power.

however this is the wiring suggested in the link i found above (admittedly that was for a toyota).

anyways ill do some more researching, and i dont think ill blow up my truck if the wires arent correct on the first try, so i may just give it a go.
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Old 01-07-2009
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Quote:
Originally Posted by fddriver02 View Post
You could probably run something off of the speed sensor.
The problem with that it every time you come to a stop and start moving again the doors would re-lock them selves. I also don't know what the VSS produces for voltage so it might only lock once you reach/drop down to a certain speed.

Using the reverse light output would work, as you flip the reverse light switch by passing into D/OD. However it would be nice to have it lock as you move to Drive, and unlock as you select Park. Is there a wire on the newer transmissions that indicates the shifter in Park or Drive to the PCM? If so I imagine you could make a relay configuration to Lock in Reverse and Drive yet unlock in Park.
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Old 01-07-2009
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Quote:
Originally Posted by sniper_101 View Post
The problem with that it every time you come to a stop and start moving again the doors would re-lock them selves. I also don't know what the VSS produces for voltage so it might only lock once you reach/drop down to a certain speed.

Using the reverse light output would work, as you flip the reverse light switch by passing into D/OD. However it would be nice to have it lock as you move to Drive, and unlock as you select Park. Is there a wire on the newer transmissions that indicates the shifter in Park or Drive to the PCM? If so I imagine you could make a relay configuration to Lock in Reverse and Drive yet unlock in Park.
Well you can set it up so it lock when you start moving and that's it. You don't need them to unlock themselves since you can just pull the handle and it will unlock.
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  #17  
Old 01-07-2009
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Originally Posted by fddriver02 View Post
Well you can set it up so it lock when you start moving and that's it. You don't need them to unlock themselves since you can just pull the handle and it will unlock.
I don't think he's saying you NEED it to unlock, he's thinking the same thing I am... any time your speed drops below whatever the lock setting is wouldn't the truck want to unlock itself just due to wiring?? Of course maybe you have to wire it one way for locking and another for unlocking??
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  #18  
Old 01-07-2009
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Quote:
Originally Posted by DisturbedESV View Post
I don't think he's saying you NEED it to unlock, he's thinking the same thing I am... any time your speed drops below whatever the lock setting is wouldn't the truck want to unlock itself just due to wiring?? Of course maybe you have to wire it one way for locking and another for unlocking??
I'm sure you can use a "latching" relay or something. Get it to lock when it sees some speed an not unlock itself at all. I'm sure its possible. Hell my Uncle's car does that factory. No it's not a stick but it locks when you throw it into drive and unlocks when you turn the key to off. When I installed an alarm on my Civic back in the day one of the features was that it locks when you get moving.
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  #19  
Old 01-07-2009
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i think there are different door switch wires. a pink/light green for UNLOCK, and a pink/yellow for LOCK (colors subject to verification, year changes, etc. etc.).

that comment made me think though that when i park and shift from D to P, i will pass R again and the doors will lock again. okay but might get annoying.
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Old 01-07-2009
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the older 2001-03 rangers can use the explorer relay think its a plu and play mod... but 04+ might as well forget that... be nice to have though, my moms 07 fusion does it at 25mph...
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  #21  
Old 01-07-2009
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Pertaining to manual transmission vehicles, my g/f's Liberty is a manual, and it locks the doors at 10 mph, and unlocks the doors when you shut the ignition off, so it could be done that way.
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  #22  
Old 01-07-2009
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Quote:
Originally Posted by 07SPORT View Post
the older 2001-03 rangers can use the explorer relay think its a plu and play mod... but 04+ might as well forget that... be nice to have though, my moms 07 fusion does it at 25mph...
What is the plug and play mod?
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Old 01-07-2009
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I dunno if it really plug and play you need to ask some of the older members here...
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  #24  
Old 01-08-2009
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What is the plug and play mod?
I am interested in this also.
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