I have an 05 645ci bmw how do u take of the window molding trim?

Remove the door opening weather-strip. Refer to Door Opening Weatherstrip Replacement in Doors.
Remove side sill trim plate. Refer to Door Sill Plate Replacement in Interior Trim.
Remove the lower quarter panel trim. Refer to Rear Quarter Trim Panel Replacement in Interior Trim.
Remove the center pillar upper trim panel. Refer to Center Pillar Upper Trim Panel Replacement in Interior Trim.
Remove the quarter upper trim panel. Refer to Rear Quarter Upper Trim Panel Replacement in Interior Trim.
Remove the center pillar outer applique. Refer to Center Pillar Applique Replacement in Exterior Trim.
Remove the roof drip molding. Refer to Body Side Roof Drip Molding Replacement in Exterior Trim.

Important: It is necessary to use new nuts when reinstalling the quarter window.
Remove the nine quarter window nuts (1), securing the quarter window assembly (2) to the body opening.
Caution: When working with any type of glass or sheet metal with exposed or rough edges, wear approved safety glasses and gloves in order to reduce the chance of personal injury.
Important: When removing the quarter window from the body opening make sure that the attaching pins are clear of the outer body.
Remove the quarter window (2) from the body opening.

Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.
Remove the rear seat back. Refer to Rear Seat Back Replacement in Seats.
Remove the door sill plate. Refer to Door Sill Plate Replacement .

Remove the 3 quarter trim panel retaining screws (1).
Starting at the lower edge of the trim panel and moving alternately clockwise and counterclockwise, pull outward on the trim panel to disengage the eight rear quarter trim panel attaching clips (2).
Remove the quarter trim panel from the vehicle.
Remove the 4 radio speaker grille speed clips (1), securing the speaker grille.
Remove the speaker grille (2).
Remove the rear quarter trim panel insulator (1), from the back of the quarter trim assembly (2).
Remove 7 rear quarter trim panel armrest retaining clips (1).
Remove 7 rear quarter trim panel armrest retaining nuts (2).
Gently pry the quarter trim panel armrest insert assembly (3), away from the rear quarter trim panel and remove.

You mite look for a video on youtube !

It is located behind the right rear quarter panel , In the back right of the interior !
Remove the right rear quarter trim panel. Refer to Rear Quarter Trim Panel Replacement - Right Side in Interior Trim.
Removal Procedure

1. Remove the rear seat. Refer to Rear Number 2 Seat Replacement or Rear Number 2 50-50 Seat Replacement in Seats.
2. Remove the Third Pillar trim panel. Refer to Third Pillar Trim Replacement .
3. Remove the garnish molding. Refer to Body Rear Corner Garnish Molding Replacement .
4. Remove the door sill plate. Refer to Liftgate Door Sill Plate Replacement .
5. Remove the quarter panel trim screws.

A lot involved in this but not to difficult !

1. Remove the rear door sill trim plate. Refer to Front Side Door Sill Plate Replacement or to Rear Side Door Sill Plate Replacement .
2. Remove the lower rear seat belt cover and bolt.
3. Remove the trim panel from the vehicle.

Remove the sill plate. Firmly pull the sill plate up and out from the retainers.
Remove the sill plate from the vehicle. Start from the front of the door sill. Use a flat-bladed tool in order to pry the door sill plate.
Rear Side Door Sill Trim Plate Replacement
Use a flat-bladed tool in order to pry the door sill plate. Remove the sill plate from the vehicle.
Body Rear Corner Garnish Molding Replacement
Remove the rear upper garnish molding. Refer to Rear Upper Garnish Molding Replacement .
Pull down on the upper corners of the garnish molding in order to disengage the retaining clips. Pull in order to disengage the remaining retaining clips. Remove the rear corner garnish molding from the vehicle. Inspect the rear corner garnish molding for broken or missing retaining clips. Replace the retaining clips as needed.
Good Luck ! Fun job !!!!!

Important: This sunroof system is timed from the factory in order to allow the actuator to shut off automatically when the sunroof window reaches a certain position. Use extreme care when removing the actuator from the sunroof module. This may cause the timing to be thrown off. This may damage to the sunroof. Anytime the actuator needs to be removed from the module, ensure that the sunroof window is in the fully closed position.
Remove the sunroof window. Refer to Sunroof Glass Panel Replacement .
Slide the sunshade fully rearward. Move the sunroof window to the vent position. Remove the sunroof screws (two on each side). Remove the sunroof window from the module.
Place the sunroof module in the fully closed position. Remove the headliner. Refer to Headlining Trim Panel Replacement in Interior trim.
Tools Required ?€¢
J 38778 Door Trim Pad and Garnish Clip Remover

?€¢
J 2772-C Headliner Installer

1. Remove the sunshades. Refer to Sunshade Replacement .
2. Remove the overhead console, if equipped. Refer to Roof Console Replacement .
3. Remove the sunshade retainers. Refer to Sunshade Anchor Replacement .
4. Remove the power sunroof switch, if equipped. Refer to Sunroof Switch Replacement in Roof.
5. Remove the sunroof trim lace, if equipped. Refer to Sunroof Seal/Molding Replacement in Roof.
6. Remove the dome light, if equipped.
7. Remove the coat hooks. Refer to Coat Hook Replacement .
8. Remove the assist handles. Assist Strap Replacement
9. Remove the rail lamp. Refer to Roof Side Rail Lamp Replacement in Lighting.
10. Remove the windshield side garnish molding. Refer to Windshield Pillar Garnish Molding Replacement .
11. Remove the upper quarter trim panels. Refer to Rear Quarter Upper Trim Panel Replacement .
12. Remove the center pillar upper trim panel. Refer to Center Pillar Upper Trim Panel Replacement .
13. Pull down on the door opening weatherstrip seal on both the front and the rear doors.
14. Remove the 2 rear retainers (2) using J 38778 Door Trim Pad and Garnish Clip Remover. Disconnect the headliner electric harness at the right side of the rear window shelf. Rotate the right front seatback to a horizontal position. Remove the headliner from the vehicle through the right front door.
    

Disconnect the electrical connector from the actuator.
Important: Before removing the actuator, ensure that the pins J 41718 are tight and holding the cable.
Thread the J 41718 into the front sunroof window screw hole in order to retain the cable adjustment. Remove the sunroof actuator screws. Remove the sunroof actuator from the module. Did you look for a video on youtube ?

yes you need the correct clips and it's real hard to install the bottom rail if the top and side rails are already on since the sides go over the bottom and the top goes over the sides to keep it from leaking.

Of course the dealer can probably supply the mouldings. Most large cities have companies that supply body shops with aftermarket parts which include things like trim.
You can check with a local body shop or the phone book for suppliers, as well as online.

The trim molding is available at most auto parts stores. I'd suggest not buying from the dealer unless $ is no object. Also, you can get it in plastic so you won't need to worry about it rusting out again.

remove all inner door trim, and inner window trim, release 2 nylon blocks on top of window scissors and slide window up and out, on outside remove plastic handle trim and undo large nut round doorlock, on edge of door pop out plastic plug and undo coonecting rods, inside door at front of handle is a little cir clip holding a pin through handle, remove both, you should now be able to wriggle handle out to the inside of the car remember to watch for wires to micro switch for cental locking, rebulild is a reveral of this.

Installation of the Molding
Take the Molding Trim whether it is stock black or painted. Mine is black because my car is a year 2000. Painted side moldings were done in the year 2001. Snap them into place.
5 Installation of the Rubber Gaskets
From the stock bumper, retrieve the upper rubber gaskets unless you ordered new ones. Simply take a screw driver and pry a corner off to get you started. Wash thoroughly. NOTE which one belongs on which side.
Place the rubber gasket on the M5 Front Bumper onto its appropriate side. Top The M5 Bumper is now Fully Assembled!!! Place aside where it can't be damaged.

What I would do is look around the edges of the windshield where the molding trim runs along for an open gap. The molding trim should be flat against the windshield as possible. A open gap would cause a whistle type of noise during high speeds. An automotive supply store should carry a glue for hold the trim piece back down on to the windshield.

Any trim shop that does windows & upholster for automobiles