Erasing HomeLink buttons

To erase the three programmed buttons (individual buttons cannot be erased):
• Press and hold the two outer HomeLink buttons until the indicator light begins to flash-after 20 seconds. Release both buttons. Do not hold for longer that 30 seconds.

HomeLink is now in the train (or learning) mode and can be programmed at any time beginning with Step 1 in the Programming section.
See also:
Checking automatic transmission fluid at normal operating temperature
(140°F-158°F [60°C-70°C])
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive the vehicle until it is warmed up
(approximately 20 miles [30 km]) until the engine coolant gauge
indic ...
Replacing backup lamp/supplemental tail lamp
The backup lamp and supplemental tail lamps are located in the trunk
lid. Follow the same steps to replace either lamp.
1. Make sure the headlamp switch is
in the off position and open trunk ...
Working with the engine off
1. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
2. Turn off the engine and remove the key.
3. Block the wheels to prevent the vehicle from moving unexpectedly. ...
