[KirkMD]

I beleive this is fairly common but my passanger side light goes up but dos not retract. I want to eliminate all other possibilities prior to finding nad buying a new motor. Any suggestions on troubleshooting the relays, etc.?



Thanks!

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[PorscheDude]

http://www.968forums.com/index.php?showtop...Headlight+Motor

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[KirkMD]

[quote name='smokiemon968' post='47289' date='Feb 11 2008, 03:23 PM']http://www.968forums.com/index.php?showtop...Headlight+Motor[/quote]





thanks! I searched but did not find that post?

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[flash]

likely a dirty mechanism - pretty common problem - gravity is what pulls them down after the motor releases them to get going, but if it's gummy, it never gets going



get yourself some tri-flow or similar penetrating teflon oil (best not to use WD-40 here) - spray liberally



this has worked so far on 100% of the cases i have heard of

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[dlearl476]

For some reason, I couldn't find either of these posts when I searched a month ago, but here's some new info based on my recent experience:
http://www.968forums.com/index.php?showtopic=8644



"gravity is what pulls them down after the motor releases them to get going, but if it's gummy, it never gets going"-flash

Based on my experience, that's not quite correct. If you look in your fuse box, there are three fuses for the motors. Circuit number 2 is a 25 amp fuse labeled "Head-Lamp Motor" Circuit 16 is a 7.5 amp fuse labeled "Concealed Headlamp-Close" and Circuit 37 is another 7.5 amp fuse labeled "Concealed Headlamp-open and Headlamp Vertical Aim Control."
IMO, there are relays that both raise and lower the headlight, with the motor. Electronically, there are five wires into the motor. Power and ground, obviously, and three others. I don't know exactly how the "Vertical Aim Control" works, but I assume somehow the motor reverses polarity to lower the lights. (I don't understand how the Aim Control works, but I can't think of another reason for this. But then, I stopped questioning Porsche's ability to over complicate things when I counted 128 separate pieces to my 912 accelerator linkage, vs about 4 in a very similar VW bug.) [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]

FWIW, I was working alone, so I couldn't verify that the motor turns opposite ways. The good news is that my issue turned out to be mechanical, not electrical, and even though it wasn't a simple "clean and re-grease," it wasn't as painful as replacing a motor.

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[flash]

it's deceiving

the "closing" circuit is a "release" move - it moves the drive unit enough to let gravity take over and lower the lights - there had to be something to put the lamp in lowering mode, otherwise they would fall down on their own

there is porsche sales literature talks about the gravity closing feature of the lights - i'll see if i can find it

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[dlearl476]

Hard to say. I know from running my motors without the lights attached, the motor definitely runs and returns the lever all the way to the bottom position, not enough weight on the lever to do that simply with gravity. Could you be "remembering" a 944?

BTW, I just found the airbox mod thread. (Better late than never, eh?) I never found a pic of the trim pieces you describe and I guess 968Engineering is NLA? What exactly are they so I can find some at a hardware or electronics store. (IIRC, mention was made of speaker trim.)

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[flash]

i never read any of the sales stuff for the 944 (never liked the car enough to bother) - i'll have time to try to find it this week

968engineering used to get them from parts express (when they were still doing stuff), but parts express changed their source, and now carries the wrong ones

crutchfield carries the correct subwoofer ports

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[dlearl476]

>crutchfield carries the correct <!--coloro:#FFFF00--><!--/coloro-->subwoofer ports<!--colorc-->
<!--/colorc-->

That's what I needed to know, thanks flash.

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