2011 Acura RL Owner's Manual - Page 304

Compass System (U.S. model without navigation system) Setting Display Mode Pressing the (Display mode) button allows you to switch display modes. Each time you turn the ignition switch to the ACCESSORY (I) position, the display mode is in auto. The screen changes between day and night modes when you turn the headlights on and off. To override the auto mode, select either day or night mode. This can be useful if you want to use the headlights during the day. Be aware that using day mode at night will make the screen extremely bright. System Initialization If for any reason, you lose power to the compass system (the battery was disconnected), the system needs to be initialized before you can use it. Initialization requires this: Entry of the compass system 4digit security code to ''unlock'' the system. GPS initialization. This may not be needed depending on how long the system was without power. Entering the Security Code If the battery goes dead or is disconnected for any reason, you will have to enter a security code into both the audio system and the compass system before you can use it again. 298