Found this on another forum..
What does the switch look like?
If you press the button and nothing happens except the light blinks, then it is most likely the 'rear compartment floor' switch. The 'rear compartment floor', located in the trunk must be in the down posistion. Sometimes the micro switch on the rear firewall fails or its 'switch arm' gets bent.
To test this, you can remove the 'rear compartment floor', then remove the switch. Then pressing the switch, have someone attempt to open your top. If the top opens, your golden. Cheap, easy fix.
A new switch is $35.00 from the dealer.