Can I manually close or open roof on 500 sl 2005, stuck and want lower

it is usually a complex procedure involving removing the roof console with the switch etc, and then winding back the roof with a suitable tool , the owners manual should explain in detail how this is done on your vehicle

the cd transport mechanism is plastic when it breaks its f..... you will have to replace it,sorry.as far as the window is concerned,put the key in the door and unlock the car holding the key over will lower all windows,then lock the car and hold over the key,the windows will go up.(that resets the windows and SHOULD reset door rollback.)if not its a computer brain reset.

This has happened to my wife's 2004 A4 Convertible 2x's. I had to read the owner's manual several times to get the job done correctly (pages in the high 70's to low 80's) ...the following is offered from memory: The handle/tool needed to accomplish the task 'manually' is located in the fuse box on the LEFT SIDE of the dashboard. A small flat blade screwdriver will enable you to pry open the fuse cover & gain access to the handle/tool. Slight twist the tool and it comes out easily. Tool is a "T" shaped handle. Once you have the handle/tool IN HAND, simply turn the RED part (only) on the handle until it 'locks' in an open position. Leaves a small space on the handle. Can't recall if you go clockwise or counterclockwise, but it will be evident. Now...move both front seats forward and tilt them to gain access to rear seat. Remove the ski boot cover in middle of the rear seat and put aside. Then, 'click' the interior boot cover panel down to gain access to a 'hole' (about size of a 50 cent piece) in the top of the boot space. This hole allows you to insert (upward) the above mentioned tool into a lock/unlock mechanism in the rear deck just forward of the trunk. The tool needs to be jiggled to go 'all the way' in...you will sense that. Once in, TURN the RED part of the handle to "LOCK" the handle into the mechanism. The tool will hang down by itself. My approach is to 'store' the roof in the open convertible position first. The front portion of the roof should be partially forward as that appears to 'release' a lever within the roof's up/down mechanism to allow you to raise the rear window portion. Thus, lift (with that friend) the rear window portion up and forward (takes some effort). The roof now has a kind of 'clamshell' appearance front & rear. The front may even flop forward but tht's OK. This step exposes the rear deck. Twist the tool to unlock the rear deck. It should click & release and a small space appears enabling you to use hands (that friend again) under it (the deck). Lift the deck up & back until the hydraulics kick in and keep the deck vertically open. Now you are ready to tackle the roof & rear window for storage under the rear deck cover. Get a friend, if possible to help with the lifting...remember, this is a "Manual" job! Once here, gently push back & lower the rear window portion of the roof into the open storage area simultaneously followed by the remainder of the roof itself. Watch fingers for possible pinching in the levers, etc., during this part of operation Hopefully you now have the roof & rear window stored in the area in front of trunk and be able to lower the rear deck to almost closed position. If so, go back to the tool and twist it to 'lock' the deck in place with roof stored. Remove tool from the ski storage area by reversing procedure above. Now comes the "Moment of Truth"! With the ignition turned on and car running, use the roof switch to bring the stored roof up and all the way to the closed position. Don't forget you must keep your finger on that switch until the operation completely finishes. Then, reverse the process to open & store the roof for a good blow dry (drive)!

roof has manual crank.open small cover on roof linning just in front of centre of sun roof and crank closed with 3 allen key usually kept inside fuse box cover.

In the driver's side trunk along the wheel well and behind the wheel well cover you will find the sunroof motor. There is a plastic knob that can be turned to close/open the roof manually. The socket tool is part of the original toolkit that came with the car, but otherwise, you can locate one that will fit. Don't use pliers as the plastic easily breaks. Meanwhile, have you looked at the fuse or toggled the switch hard to work? If the motor works, but doesn't move there is an adjutment on the motor's clutch that can be tightened. Hope this helps.

Temporary Fix: unsnap off the access door in the overhead ceiling liner behind the sunroof opening;
Use a 4mm hexagon Allen wrench to wind it closed.

roof on my sl 500 will not open electrially,

If the motor is stuck, you can probably hold the switch to the forward position, and smack the roof. This may allow the motor to start working. I don't think there is any way to do it manually.

I was lucky, the owners manual was still with the car and it addressed this problem. Tells you to remove the cover for the controls to the sun roof. Then remove the screw plug that is located in the forward left side of the control box hole (Need big screw driver to break it lose). Then remove the slug surounding the inner adjustment screw, being careful not to lose any shims or washers. Trun the adjustment screw counter clock wise to close the sunroof down and clock wise to shut the sunroof from the open position.
Looks like the motor is shoot. To prevent this from happening again I disconnected the white with black strip wire to the control pad and unsulated the lead. It can easiely be hooked back up in the future if the motor is replaced.
Good luck all!

send your car to authorized dealer for diagnose,or you my read your owners manual for closing your roof manually,