Sunroof opens by itself - 2003 Volkswagen Passat

Ok, so the first poster obviously didnt read the question and just posted the first thing he googled.

So I'll try.
You have a short, most likely on the actual drive motor itself or in the switch. I wouldn't bother with replacing the fuse again until you take the motor out or test the switch for a short.

see the diagram attached and fix it. God bless you

Next step is to test the sunroof open/close switch itself, it might be faulty. Don't know the Murano, but often the switch-cover can be removed relatively easy. Test the switch (or better said: the wires fitted to it) with a volt-meter. You should have something like 4 wires; ground, + in, open (= + out), close (= + out).

When the fuse is not blown you should easily determine the + in wire (otherwise the fuse probably is blown), then set/hold the switch to open (or close) and see wether there is a + out voltage. If there is, it's probably the sunroof motor, something for the dealer to tackle ...

PS: Stupid question perhaps, but you're sure the sunroof is not in a "locked" state, some sunroofs have a manual (master-) lock ...

Can't say for sure about this particular model, but most vehicles with sunroofs have a manual crank for situations like this. Generally it is located forward of the sunroof on the roof of the interior of the car, sometimes under a panel or interior light. This at least will get the roof closed until the problem can be fixed. It may also allow the sun roof to realign itself and help the electric crank to start working again.

If the sunroof only opens but does not close the problem is the relay or the motor itself, try replacing the relay of this does not work, try replacing the roof motor.

first the easy problem is the blower. it has a faulty resistor. it works on 4 because 4 bypasses the resistor to give you full power.

the sunroof sounds like you've got a shorted wire somewhere. the open power wire has to be shorted to a 12v power sorce. there should be a sunroof fuse. check the owners manual for it's location. but if the wire is shorted it may open without it. you may have to remove the headliner to unplug the sunroof motor itself.

Some customers may comment that the sunroof will no longer respond to the control switch while in a vented, partially opened, or fully opened position.
Cause A software issue with the sunroof control module may cause the sunroof control module to incorrectly indicate a "closed" position, which may result in no power to the sunroof motor.
Correction Verify the customer concern. If a condition is present, replace the sunroof control module with a new sunroof control module, P/N 15847643. Refer to the Service Procedure in this bulletin.
Service Procedure

1. Verify the customer concern by opening and closing the sunroof. • If the sunroof will not open , check the power windows. - If the power windows are also inoperative, check the fuse. If the fuse has opened, refer to Corporate Bulletin Number 05-08-64-004 to install 30A circuit breaker. - If the power windows are fully functional, refer to "Power Sunroof Inoperative" diagnostics (SI Document ID# 1392967) in the Body section of the 2005 Chevrolet Equinox or Saturn VUE Service Manual. • If the sunroof will open (or is already open), but will not close , proceed to Step 2.
2. Replace the sunroof control module. Refer to "Sunroof Control Module Replacement" procedure in the Body section of the 2005 Chevrolet Equinox Service Manual (SI Document ID# 1196049) or Saturn VUE Service Manual (SI Document ID# 1710479).
3. Open and close the sunroof in order to confirm that the customer concern has been resolved.

Parts Information Part Number
Description
Qty
15847643
Sunroof Control Module
1

you can open and close you sunroof "manually" remove the plastic cover next to your sunroof and dome light buttons (above your rearview mirror) there is an allen wrench stored inside... insert the wrench into the corresponding hole and you can close or open you sunroof by turning the wrench

clean the runners on the sunroof watching out for trapped debris. try lubricating the runners with a fine lubricant with a clothe, make sure no debris caught in motor also.

hi sounds like a faulty sunroof relay keeping the motor running it may well have blown the fuse or burned the motor out if you connected it back up and it doesn,t work at all but should be able to turn the sunroof back manually look on the sunroof motor there should be sometthing like a slot for a large screwdriver or a bolt head of sorts just wind it back and then check the relays and fuses if your switch is a electronic one make a make shift one and try [simple switch]on and off as this is delicate circiutery and the slightest short can destroy it best of luck yates210456