How to replace exterior door handle assembly on BMW 318ic . The old one broke and now trying to install the new door handle assemble without sucess. Any suggestions?

You need a new door lock mechanism.

remove the screws that fasten the interior door panel to the door.  Visually inspect the handle assembly. there will be two cables that connect the handle and lock button to the door lock assembly.  I would bet that the L-shaped end of the interior door handle cable broke.  The replacement is self explanatory for the handle. Google the door lock assembly which isn't as visable.  Bob

chances are you are going to have to replace the motor in that door. the quick and easy way is to replace the entire assembly which includes the motor and the track. If you are handy enough to remove the interior door panel and remove the old assembly you can certainly install the new one.

remove inner panel .. unhook handle assembly and rods.. to replace

Two 10mm bolts, or nuts, hold the handle on from inside the door. dont forget to remove actuating rod from old handle. probably clip is broke also.

SECTION 501-14: Handles, Locks, Latches and Entry Systems 2001 Escape Workshop Manual REMOVAL AND INSTALLATION Exterior Front Door Handle Removal and Installation

1. Remove the front door trim panel. For additional information, refer to Section 501-05 .

1. Position the watershield aside.

1. NOTE: The tie strap does not need to be reinstalled.
   If equipped, remove the tie strap from the anti-theft guard.

1. Remove the screws and position the anti-theft guard aside.

1. Release the clip and disconnect the exterior door handle actuating rod.

1. Remove the anti-theft guard.

1. Remove the exterior door handle screw.

1. Remove the exterior handle actuating rod.

1. Remove the exterior door handle lock cylinder cover.

1. Remove the exterior door handle.

lock rods inside the door need to be attached and with exterior door handle broken, it will need to be replaced first. so the assembly will be complete

hope2help shack

I found this on another page, hope it helps:)

Remove the plastic cover behind the door handle assembly by removing one black 14mm nut from just above the door handle, and 1 screw (usually phillips) from the bottom of the plastic cover.
Remove linkages from lock cylinder and door handle assembly. Use a small flathead screwdriver to slide retaining clips forward, and linkages will come free.
Remove one black 14mm nut from the very top of the door handle assembly.
Remove one phillips screw drom the bottom of the door handle assembly.
Door handle assembly should now come free by pulling out slightly at the top, and pulling upwards.
Transfer lock cylinder and key minder light (if applicable) to new door handle assembly. Lock cylinder is retained by a single TORX bolt.
Reinstall in reverse.
TIP: If you lose or damage any of those black plastic coated nuts, order new ones. They are GM p/n 10067214 and should be around $0.58/each. There are two on each door.

I seriously doubt that supergluing or even epoxying a handle back will hold at all, or hold for more then few days.
I would only suggest doing the replacement yourself if you familiar with this type of work, or has the aptitude to figure out how to do it, and have the right tools because it is NOT trivial and a number of things can be done wrong, broken or scratched.
The handle itself cannot be replaced. The outside door handle assembly (which includes the handle, the bezel with all associated springs, plastic and metal hardware) has to be replaced. Besides junkyards, which is a long shot for number of reasons, the only place where the handle assembly can be bought is the dealer. And these handle assemblies are not cheap ether. The driver side handle on my 2002 Altima broke first. I paid $60.23+tax, and they had to order it. BEFORE anyone goes to the dealer I suggest to call first, and ask them if they have it in stock. Since door handles are sold painted they will ask you for your car's VIN number so that they match the paint color.
After you pick it up, the replacement will take about an hour (if you know what you doing). The inside door panel has to be removed, it is held in place by the inside door handle and the panel is attached by a number of clips, the handle assembly is attached to the door by three bolts, to remove which you will need a socket with extension. You will also need a good flashlight so you see what you are doing.
If you are familiar how to do this type of work and plan to keep the car for a while I strongly suggest buying a factory service manual on a CD (I bought mine on eBay for under $10). It is worth its price 1000s of times over, and makes almost ALL repair work SOOO much easier.

ok. first u remove the door panel(s), with the window rolled up, u will be able to see the back side of the exterior door handle. there will be three bolts, they are size 10metric. there is also a rod attached to the handle held in place by a plastic clip, remove the rod, then remove the three bolts. from the outside remove the exterior door handle being careful not to scratch painted surface. Repeat for the other door(s). Repeat this for installation.