INTERIOR REARVIEW MIRROR WITH GDO MODULE

An interior rearview mirror assembly for a vehicle includes a mirror head, a mirror mounting structure configured to adjustably mount the mirror head at an interior portion of the vehicle, and a receiving portion for receiving a portable self-contained garage door opening module. The portable module includes a user input and a housing, and is operable to wirelessly transmit a radio frequency signal responsive to actuation of the user input of the portable module. With the portable module received at the receiving portion of the interior rearview mirror assembly, the user input is accessible by a driver of the vehicle. A retaining element is configured to attach to the mirror casing at the receiving portion to releasably secure the portable module at the receiving portion.