Using the preset buttons on the radio's front dashboard, enter the security code to unlock it. you do not have the code get in touch with Acura to obtain it.
How to enter your2003 Acura tl radio unlock code
What worked for me was to unplug the antenna in the back of the radio and then enter the security code. Once the security code is entered, you can plug the antenna connector back into the radio.
Use your radio Pre-Set channel to enter code
With the radio presets
By pressing the radio preset buttons.
To reset the radio code for a 2009 Acura MDX after disconnecting the battery, you will need to retrieve the radio code from your vehicle's manual or the card that came with it. If you can't find it, you can contact an Acura dealership with your Vehicle Identification Number (VIN) to obtain the code. Once you have the code, turn on the radio, enter the code using the preset buttons, and press 'Enter' to unlock it.
Code for 2007 hiace
To enter a stereo code on a 2006 Acura, first turn on the ignition and the radio. If the radio displays "CODE," use the preset buttons (1-6) to input the code. Press the appropriate button for each digit of the code, and then press the "AM/FM" or "Enter" button to confirm. If the code is correct, the radio will unlock and resume normal operation.
With the radio presets
Yes the radio has to be on. The radio code can be for on a white sticker on the glovebox. open the box and look on the left hand side (outside) for your code.
If you disconnected the battery lately then the security system in the radio has disabled the radio the code is on the card with your owners manual if you don't have the card then you need to get the serial number from the radio and call the dealer and he will give you the code number to enter with the radio buttons good luck Cliff