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Unread 11-03-2013, 08:06 PM   #1
goodkid1
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Join Date: Jul 2003
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Auto Door Lock Cold Weather Issue

Hi Guys: My electrical door locks on a '95 Cherokee became sluggish 6 months ago, so I stripped the doors down in order to lubricate the internal mechanical parts. All went well and the problem was fixed. However, instead of sailing in Newport Beach CA, as I did yesterday, I am now two hours drive away, and deer hunting at 8000 feet and it is COLD!! (Ya GOTTA love southern California) The old problem is back and the door locks won't move enough to allow the outside handles to release the door latches. The manual lock/unlock plastic buttons are sluggish, but even after giving them a manual assist, the internal handle will open the door, but the outside handle refuses to move the "innards" enough to release the latch. I THINK I used white lithium grease to lube the door's internal and external parts, probably with a squirt of WD-40 for good measure. Does anyone have knowledge for a more durable and long lasting fix? Is there a more temperature tolerant lube, or should I be looking for other problems? Any Jeep worth her salt should work her buttons below freezing as well as at the beach. Thanks in advance for your advice.

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Unread 11-04-2013, 03:38 AM   #2
sAe23
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1995 XJ Cherokee 
 
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Location: Los Angeles / SFV, California
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I'm in a similar state, but I haven't done the work you have (yet).
My driver door lock will work properly with the key, but when it's cold, the remote fails to motivate the lock properly.
If i try to open the door, it's still locked. After a second unlock from the remote, it will then open.
I'm presuming the motor is failing, or the works are gummed up.
Will be watching to see how yours gets resolved...
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Unread 11-04-2013, 04:45 PM   #3
blackcar87
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1994 XJ Cherokee 
 
Join Date: Sep 2008
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All of mine stick in the cold, I have had all of the doors apart at some time or another and have worked on all the mechs added grease to know avail. Back doors are worse than the front. The front usually lock but the backs move about half way then stop. If you pulled the back door pretty hard with it locked it would open. Found this out the hard way when I went out of town one weekend and came back to wires hanging out of the dash!
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Unread 11-04-2013, 04:51 PM   #4
blackcar87
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1994 XJ Cherokee 
 
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Oh yeah the door lock motor is riveted to the door. Mine was real loose. It looked like the motor itself was moving up and down. So I drilled out the rivets and replaced with bolts. Did not really change any thing. All of the motors are orig. from 94 so I think they are just weak.
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1994 Cherokee country, 3 inch aal, 17x7 Jeep Libery wheels, 245/75/17' BFG's, yakima rack
2004 Grand Cherokee Freedom Edition 4.7 HO ebc dimpled/slotted rotors, green stuff pads, Bilstein shocks

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Unread 11-16-2013, 07:26 PM   #5
goodkid1
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I THINK my motors are OK, as after I re-lubed 6 months ago, all door handles and locks were perfect again....."like buddah". And they are fine now in Santa Monica warmth (winter: 68 degree average high temp). But in the mountains, at about 35 degree mornings? Fahget abouddit. Local warm weather dealers have no answers. I am originally from Boston, have owned Jeeps there, and had no problems. I just can't come up with working solution in cold weather now. Thanks for replies.
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Unread 11-16-2013, 09:12 PM   #6
macklamar
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I learned something interesting when I went through a similar issue before. A lot of lubricants you would be quick to use in these mechanisms have a tendency to stiffen in cold weather and also with age. The best solution is to clean everything thoroughly with denatured alcohol and then lubricate with a lead based lubricant... Worked perfectly for me.

Good luck
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Unread 11-17-2013, 08:19 AM   #7
CJ7-Tim
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Location: out in the garage - Minneapolis, Minnesota
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The locking and latching mechanisms should be thoroughly cleaned with Throttle Body Cleaner spray. WD-40 is neither a cleaner nor a lubricant, it does however dry to a sticky gooey dirt attracting film.

For Minnesota winters and door lubrication, I prefer BreakFree CLP gun oil. It lubricates under harsh conditions and contains a cleaning agent that continues to work long after it is applied.

If you still have issues, make sure the lock solenoids are receiving full voltage and have good solid grounds. Anything like corrosion, loose wire plugs, and poor ground connections will reduce the current available to activate the solenoids.
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Unread 11-17-2013, 09:45 AM   #8
copmedic309
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Break free! Best for your glock and your locks.

Ry
Better tried by 12, then carried by 6.
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