SPLASHED WATER FROM CUP HOLDER INTO AC CONTROL MODULE PANEL IT FLASHED IUNTERMITTANTLY THEN WENT DARK. NO LIGHTS ARE ON NONE OF THE FUNCTIUON BUTTONS RESPOND. PLEASE ADVISE

You must take the car to the dealer and have the BCM replaced.

Did you check both fuse boxes and did you check to make sure that there is voltage to the fuses?

light bulbs burn out or bad a/c control module

REMOVE FROM DASH, TAKE OUT CUP HOLDER/ PRY OFF SMALL COVER, BEHIND 2 SMALL SCREWS, THEN FRAME AROUND CLIMATE CONTROL, REMOVE UNIT REMOVE BIG PLUG, REPLACE AND REASSEMBLE

Try to let things dry off before panicing...water splashed everywhere!

there might be corrosion on the ends of the fuse holder check that or try tuner cleaner before inserting the fuse.could also be a short in the fuse holder.

Yeah that sounds right, sounds to me Like Power Control Module (AC Control Module). You shouldn't need to get a code from the factory removing the Radio. If you do its not a big hassle it can be done by phone.

From Lou on Topix.com

The bulbs are very inexpensive. They can be purchased at Radio Shack. Two bulbs cost about $2 per set. They are 12 volt, 60 milliamp and they come with long leads. To replace the bulbs in the steering wheel you must first carefully pry out the switch and the unplug it. Then you must carefully unsnap the switch housing. Take extra caution to not break any of the plastic snap fittings and do not lose any parts. The circuit boards contain the mini-lamps and they are soldered onto the board. Snap of the old bulbs , reatin the housing and the blue rubber light covers. Place the new bulb into the old holder, slip on the blue lens cover, snip the leads to about 1/4 inch, and then solder them onto the boards in the old place. Once soldered, carefully bend the bulb over to lay flat. Take the time to replace all of the bulbs. Re-assemble the switch and replace it in the steering wheel.
For the heat control dash lights the entire assembly must be removed. Replace the bulbs inthe same manner as above. The door lights do not need to be soldered, they have a holder that "unscrews" from the circuit board. Just remove the old bulb from the holder, insert the new bulb and twist the leads into place and snip off the excess leads. Then "screw" the holder back into the circuit board.

I had the same issue on my 98 323i. LCD went dark and none of the controls worked. FIX: There's a .47uF capacitor on the circuit board that needs replacing. You have to remove the control panel (first remove the stereo then the control panel is easy) Take the unit apart and solder in a new capacitor on the mainboard. Google it and you'll find instructions and photos. The fix worked for me. Hardest part was de-soldering the old square capacitor. Spent 50cents at radio shack for the new part. Looked different but same value. One year later, and it still works fine.