Identifying a garage door with rolling security code

WARNING: This page is about a different car, the 2009 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Garage doors with rolling security codes manufactured after 1996 can be identified as follows:

Read the garage door instruction manual.

Fig 1: Illustration For Step 1-3
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Programming the garage opener in the rearview mirror seems to be successful but the garage door does not open.
Press and hold the programmed button. The garage door uses a rolling security code if the LED flashes rapidly and after 2 seconds shines constantly.