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-   Porsche 924/944/968 Technical Forum (http://forums.pelicanparts.com/porsche-924-944-968-technical-forum/)
-   -   Sunroof won't unlock (http://forums.pelicanparts.com/porsche-924-944-968-technical-forum/103349-sunroof-wont-unlock.html)

winddance@att.n 03-23-2003 11:26 AM

Sunroof won't unlock
 
Ok, I've read all the posts about taking your sunroof off. I even read my manual. It just won't unlock. Anyone know the color of the wires I can twist together back by the sunroof motor to bypass the microswitch that I can't find? Are the microswitches right behind the relay boxes? I cvould uncover all this by completely removing the assembly and reinstalling it, but that is always a little risky since evrything else works. Or, there has got to be some way to manually unlock the roof other than forcing it out of the hinges. ANy ideas? 1986 944. Thanks!

AaronM 03-23-2003 11:46 AM

You've probably already tried it, but in the eternal spirit of "try the simplest thing first", you're trying this with the key in the "Acc" position (power only to radio and sunroof), right? If the key is in the "Run" position, then the sunroof will not unlatch (safety feature to keep you from accidentally unlatching the sunroof and playing "freeway frisbee" when at speed).

If you have the key in the "Acc" position, are you pushing the "up" button to unlatch the sunroof? It seems counter-intuitive, but in order to unlatch the sunroof you have to push the "up" button (which is the button that raises the roof when the car is running). If you're pushing the "down" button (which latches the roof when the car isn't running), nothing will happen because the roof is already latched.

There is no microswitch that stops the motor when the roof is released. The system relies on the resistance of the lifting arms to overcome the slip-clutch.

Aaron

EDIT: Was your car made after February 1986? If so, it has the new sunroof mechanism, which is better known by the people on this board. If it was made up to and including February 1986, it will have the old style mechanism. The trouble-shooting is different for the older style and fewer people have cars with it.

winddance@att.n 03-23-2003 01:06 PM

Been there, tried that. Why is it that the safety features are the things that make things not work as they get older? I'll check on the date, but I think it must be pre-feb since I could not find any microswitches on the front of the motor assembly per the tech article. There's got to be some way to bypass it all and unlock the roof manually or with a bypass switch.

AaronM 03-23-2003 01:26 PM

Quote:

Originally posted by winddance@att.n
Been there, tried that. Why is it that the safety features are the things that make things not work as they get older? I'll check on the date, but I think it must be pre-feb since I could not find any microswitches on the front of the motor assembly per the tech article. There's got to be some way to bypass it all and unlock the roof manually or with a bypass switch.
You can spin the motor manually, but there is no way to electrically bypass the microswitches that I know of. And as I said, there is no microswitch to stop the motor when it has released the roof, so it can't be "thinking" that the roof is already unlatched or anything like that.

It might be thinking that the key is in the "run" position when it's just inserted and in the "acc" postion, but I don't know how to fix that.

Aaron

nickfreke 03-24-2003 03:33 AM

Hiya,

I have a 924s 1986, I all need to do is put the key in the inginition,
and then the sunroof unlocks.

Nick.

winddance@att.n 03-24-2003 07:25 AM

"I have a 924s 1986, I all need to do is put the key in the inginition,
and then the sunroof unlocks.

Nick.".

Well Nick, if life could only be that easy. Is this the way it was designed, or did you do something to have this miracle happen? I tell ya, I am ready to start taking the 3 screws out of each side of the rear roof bars to get this sucker off. Or, better yet, howsabout a sawsall, then mount a manual release/lock off a ford escort or something?

Frank B 03-24-2003 07:41 AM

that's what I do...

AaronM 03-24-2003 03:31 PM

Quote:

Originally posted by winddance@att.n
"I have a 924s 1986, I all need to do is put the key in the inginition,
and then the sunroof unlocks.

Nick.".

Well Nick, if life could only be that easy. Is this the way it was designed, or did you do something to have this miracle happen? I tell ya, I am ready to start taking the 3 screws out of each side of the rear roof bars to get this sucker off. Or, better yet, howsabout a sawsall, then mount a manual release/lock off a ford escort or something?

What he means is that the "Acc" position in the 924S is with the key just inserted. Turning the key at all in a 924S or early 944 will put it in the "Run" position. On the late 944 (with the newer interior) Porsche used a traditional three-position ignition switch instead of the two-position switch used in the 924/924S/Early 944.

Aaron

winddance@att.n 03-24-2003 04:47 PM

Yep, Aaron. Been there done that. Here is the solution, it is so simple I am surprised no-one has ever mentioned it on any of the threads:
1) Open roof
2) Put screwdriver between roof and one of the rear support bars, put light pressure on screwdriver to slide pin in the bar out of the roof. Lift that side off. It takes very little pressure if you do it one side at a time.
3) Repeat on other side.

shlim 04-10-2003 08:45 PM

re: -.1

Good to hear that it is so easy to remove the sunroof - but can you re-attach the sunroof easily ? Have you tried it ?

I never ever got my sunroof to disengage and frankly the cost of re-wiring the sunroof system (according to the OPC wiring needs to be re-done) has just put me off.

If I can manually remove and put back the sunroof, maybe that's the way to go (for now)....

shlim
86 944

winddance@att.n 04-11-2003 11:02 AM

Yep, just as easy to get back on. I might attach a lever on the pins if I have spare time in the next few weeks so I don't need a screwdriver.

944S Boyeee 04-11-2003 11:24 AM

Winddance - what do you mean when you say it won't unlock?

When you get in the car and turn the key to position two and push the sunroof button, does it move up? Does it open?

Are you having problem getting the arms to retract so you can remove the roof?

944S Boyeee

winddance@att.n 04-13-2003 05:59 AM

Yep, it opens and closes fine. Just won't retract/unlock so I can take the sunroof off.

shlim 04-14-2003 12:14 AM

Winddance, I'm not sure if I'm missing something here.

Raised the roof, looked at the lever that raises the roof (black color with serrated teeth) - seems like the it is a solid piece with a "side bar" that slides into the groove in the sunroof.

I could not slide the bar out of the sunroof (looks like it is one piece with the lever). Am I looking at the wrong place ? I read your post and it seems to suggest that the side bar slides out of the sunroof.

????
shlim


Mine's a 86 944 as well but UK spec (RHD).

winddance@att.n 04-15-2003 06:07 PM

Shlim, if you give me your email address I can send you a jpg image. At the rear of the sunroof there are the two bars that hold the roof open. When it is open you can see a small round rod perpendicular to each bar. This round bar catches in a groove on the sunroof, holding the sunroof so it won't fall off when open. The round bar only sticks into the sunroof groove about 1/4 inch. When you put a screwdriver in to pry the bar out (left or right depending on the side), the flexibility of the roof allows enough play for the pin to pop out. You need to lift the sunroof off that side while prying the pin or the pin will just slide back into the groove when you release the pressure. The other side is even easier since there willl now be more play in the roof. Let me know if you want pictures. Not sure how to leave them on the bb.

Scott R 04-15-2003 06:55 PM

It's a misaligned microswitch, check them both. Your roof is not seeing that it's in the full close postion. The unlock feature will only work if the bottom microswitch sees that the roof is closed.

You can locate the microswitches behind the trunk wall on the drivers side. When your roof is closed both switches should be depressed. They are two little boxes about the size of your thumb, they face a white plastic wheel with channels in it, these channels activate the switches. If I had a some time I would snap a photo for you. But they are there keep looking, they have a sliding bracket that is held in place by a small phillips screw. Don't give up and start hacking up wires.

It's either that or you could have a relay issue.

winddance@att.n 04-16-2003 12:20 PM

Scott R:
Been there, done that. Checked the micrpswotches, bypassed the microwitches, disconnected the microswitches, did everything to the microswitches but light the cigarette after. Not worth the trouble dealing with them anymore when it is so easy to take the roof off manually.

shlim 04-16-2003 06:30 PM

Winddance,

my email address is seowhurn@hotmail.com. Would appreciate the jpg file.

Thanks !

shlim
86 944

Scott R 04-16-2003 06:38 PM

Actually post that jpg. There has to be an amswer! It sucks to have to jimmy your roof out everytime when the rest of us (save FrankB) can just unlock it and pull it out.

winddance@att.n 04-27-2003 06:07 AM

http://forums.pelicanparts.com/uploads/porscheroof.jpg

Left image shows where the screwdriver goes (this is the drivers side rear sunroof bar). The right image shows how small the pin that holds your roof on really is. Sorry this took so long, I have a broken hip and didn't find it real enjoyable getting into my backseat.


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