2010 Acura RL Owner's Manual - Page 283

Radio Theft Protection Your vehicle's audio system may disable itself if it is disconnected from electrical power for any reason. To make it work again, you must enter a specific five-digit code with the preset buttons. Because there are hundreds of number combinations possible from the five digits, making the system work without knowing the exact code is nearly impossible. You should have received a radio code card that lists your audio system's code and serial numbers. It is best to store this card in a safe place at home. In addition, you should write the audio system's serial number in this owner's manual. If you lose the card, you must obtain the code number from your dealer. To do this, you will need the audio system's serial number. If your vehicle's battery is disconnected or goes dead, or the radio fuse is removed, the audio system will disable itself. If this happens, you will see '' '' in the upper display the next time you turn on the system. Use the preset buttons to enter the code. The code is located on the radio code card included in your owner's manual kit. When it is entered correctly, the radio will start playing. If you make a mistake entering the code, do not start over; complete the five-digit sequence, then enter the correct code. You have 10 tries to enter the correct code. If the code card is lost, your dealer can access your code with your radio's serial number. To access the serial number, turn the radio on. It must display '' '', then turn the radio off. Push and hold the preset 1 and preset 6 buttons, then push the power/volume knob. The serial number will appear in two sets of four digits. The system will retain your AM and FM presets even if power is disconnected. 280 2010 RL