Acura 3.5 RL Manual page 1132

Without navigation system:
1. Make sure you have the anti-theft code for the
radio, then write down the frequencies for the
radio's preset buttons.
2. Remove the automatic climate control panel and
audio panel assembly (see
AUDIO
UNIT
BOLT
BRACKET
3. Remove the seven (or eight) mounting screws, then
remove the audio unit.
4. Install in the reverse order of removal.
5. After installing the audio unit, enter the anti-theft
code for the radio, then enter the customer's radio
station presets.
section 20).
SCREW