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Discussion Starter · #1 ·
<IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0"> On my 98 S70 the drivers side automatic door locks will NOT unlock when it is really hot! Has anyone else had this problem? <p>I know it isn't electrical because the lock mechanism still tries to move, but it's like it's not strong enough when it gets above a certain temperature and it's driving me nuts!<p> I can unlock the driver's door with the key of course but I always put my briefcase in the back seat and when it doesn't unlock, it's a real pain to have to reach in and unlock it. <p>Is it a lubrication problem? If it is, what kind of lubrication can I use and are the mechanisms even serviceable? <p>Appreciate any input on this one. <p>TIA<br> <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0">
 

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Not exactly sure what the problem is but mine does the exact same thing. <p>The only thing I can figure is that (as we all know heat is the enemy of any electric device) when the door lock actuator reaches a high temperature level the power output of the actuator decreases. <p>Simple answer. The actuator is old.
 

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Re: (LinearPearl)

I'm glad to hear that you have the problem too. I don't mean that I am "glad" that you have a problem with your locks, but it's good to hear that someone else has this problem too. Misery loves company and all right? <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"><p>What is strange is that the problem is ONLY on the left side of the car! Presumably all of the locks get the same amount of use when the remote is used; and I use my remote all the time. <p>I guess I'll have to open one up and take a looks around. Maybe a little lubrication on the moving parts would help. . . <p>I'll post my findings. Thanks for letting me know that you have this problem too.
 

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Re: (IRoll4me)

My problem occurs on whichever side is in direct sunlight. If the car sits with the driver side in direct sunlight, it will be that side that wont work. The opposite is also true. Always the front doors too and never the rear doors.<p>When it does happen, after running around with the A/C on or the windows down, usually when I get to my destination the problem is gone. For whatever reason I am convinced that the high temperature IS the culprit.<p>Keep me/US posted!
 

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I have the same problem too...but just driver's door- I have yet to tackle it.
 

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Discussion Starter · #6 ·
Re: (MadeInJapan)

Took the drivers side door panel off and took a look at the lock mechanism. There really isn't much to lubricate because the entire thing is encased in a plastic shell. There were however some levers on the outside that I applied some 3 in 1 to but it didn't really seem to help. <p>I believe that the motor or most likely solenoids just wear out and get weaker and weaker over time. The heat just exacerbates it. About a year ago, my right rear lock completely failed and I replaced it with a new one. It is still working great and doesn't seem to be effected by the heat at all. All three other locks are VERY weak and sluggish compared to the new one. <p>At a little over $100 each, it would be nice to investigate the possibility of replacing just the solenoid.
 
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