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Hi. The sunroof glass is attached to two rails. You will need to open the sunroof completely and from the outside of the vehicle, look down at the rails. From your symptoms it sounds like it is "Out of Time". Look closely at the rails. I suspect either wear and tear or debris jammed up the components that guide the glass over and down into its closed position. If it doesn't make sense when you look at it. You can write back and explain what you have found or send it in for inspection. If the shop or dealer recommends replacing it, sit down first. Ya they are not cheep. Good Luck.
check fuse and relay if good than possible motor ot track problem their should be a mechanical bypass that will let you close it if stuck open the following information is courtesy of monte carlo forum
To check the condition of your original sunroof guides:
Gl*** in closed position.
Locate & remove 3 torx bolts on each side of sunroof glass. Lift glass out of sunroof opening & set aside in a safe place.
Locate "J" shaped cover plate at front of sunroof track assembly. Remove 2 torx bolts from each cover plate.
Lift up bracket to remove.
Inspect the plastic guides on each side. The sunroof cables attach to guides on front outer corner. Inspect this area closely for damage.
Do not operate the sunroof with the J plates removed.
If the sunroof guides are not broken & the glass is a uniform height along the rear edge your problem may be a stripped gear inside the motor. The motor has a manual override:
Get access to the motor by removing the map light/switch console or lowering the front of the headliner.
Insert a large standard screwdriver into the nylon bushing at the center of the motor hub. Push up & turn the screwdriver to manually move the sunroof glass. If the unit will fully open & close manually, you most likely only need a replacement motor.
If your sunroof is stuck in the open position follow these steps to get it closed:
Remove the glass.
Try to close the unit without the glass. Many times one side will still be operational and close correctly.
Try to slide the inoperable lift arm forward. If it moves, slide it forward until it stops.
You now need to slide the original plastic guide forward to lower the arm to the closed position. Using a standard screwdriver, push it forward. The lift arm should begin to lower.
If the lift arm will still not fully lower, remove the J plate as explained above, sometimes the sunroof cable will need to be lifted up to allow the guide to fully slide forward.
Look toward the back of the sunroof on inside, if there is a small circular piece of plastic or other slot like opening. Open it with proper tool, probably a screw driver. In there should be the part u will need to turn, with the proper tool usually sized to fit socket & ratchet, or Allen key, or star wrench. In order to close, or begin to close the sunroof manually. Usually u can get it started manually, then run it as u usually
If you remove any gear that is coupling it to the motor you should be able to slide it back to where you want. I would put gear back just to hold it in place and keep it from moving. But you do have to replace that gearbox for future operation.
i have changed the whole sunroof on my mx6,old one was to rusted around edges.if your roof opens but not close it sounds like your motor is dying or your electrical connections to motor are in rough shape.you should be able to close your roof by pushing button and placing your hand in middle of roof and help by lighty pushing/guiding close. be sure roof is straight and not crooked or it will jam and burn out motor
THE ELECTRIC DRIVE SYSTEM FOR POWER SUNROOF IS NOT ADJUSTABLE.DONT REMOVE THE SUNROOF MOTOR UNLESS THE SUNROOF IS COMPLETELY CLOSED.OTHERWISE A NEW MOTOR WILL HAVE TO BE INSTALLED AND TIMED WITH A TOOL THAT COMES WITH THE NEW MOTOR.THE GLASS PANEL CAN BE ADJUSTED.OPEN THE INTERIOR SUNSHADE ALL THE WAY BACK AND OPERATE THE SUNROOF UNTIL FULLY CLOSED.THERE ARE THREE GLASS MOUNTING SCREWS ON EACH SIDE OF THE SUNROOF OPENING.INSIDE THE VECHICLE LOOSEN THE SCREWS SET THE FRONT EDGE OF THE GLASS TO BE JUST 1MM BELOW THE SURFACE OF THE ROOF.ADJUST THE GLASS AT THE REAR EDGE TO BE JUST ABOVE 1MM THE ROOF AT THE REAR TIGHTEN THE SCREWS.
sounds like the metal deflector in front of the sunroof,is separated and caught in the roof mechanism, however there are other issues that can cause that condition, it can be anything from a bad sunroof switch to the sunroof tracks jamming, start with looking to see if there any obstuctions in the track..the sunroof mechanism can get costly to repair.
usually the only parts you can get is either the glass or module. even from a salvage yard. So knowing this look to replace the whole module. it can be expensive. the headliner must be dropped, wires disconnected drain tubes, and bolts removed. once new is installed it must be synced.
make it go back to the open position,look down the side of the tracks in the roof that the sun shade slides in and you will probable find the guides for the sunshade are jamming up the tracks. only way to replace them<4 one in each corner> is to remove the glass section and then close sunshade that will give access to the 4 guides which are available from dealer as a kit
Sounds like the sunroof motor is out of time. Needs to be re-timed. There is a retime procedure, (that I would try first) but I don't remember the whole procedure. if you still have the problem, let me know and i will get the whole thing , from the service manual.