RDX AWD L4-2.3L Turbo (2010)
4. Make sure the HomeLink compatible remote transmitter (test remote) has fresh batteries.
5. Clear any previously learned codes by pressing and holding the two outside buttons (A) on the roof console (B). When the red indicator (C) on the
unit starts blinking, about 20 seconds then release the buttons.
6. Point the test remote transmitter (A) straight up exactly 4.0 in (101.6 mm) away from the roof console (B).
7. Press and hold the test transmitter button and one of the HomeLink buttons (C) at the same time.
8. Wait for about 20 seconds while watching the red indicator (D) on the HomeLink unit.