In the glove box, on the same sticker as the serial number, is the five digit reset code for the radio.....at least it is on my 2010...just did it. Disconnect battery for 15 minutes to get rid of whatever code is displayed (1-9). after you hook battery back up there will be no error code number....just the text ERROR CODE...do nothing except enter those five digits...you should be done...put the radio on a rock station you Honda guru, you!

 

I need code number for honda Acord 2011 to the radio .I don't have that number .and what can I do if intered wrong number fo 4 times??

 

Just FYI. This is comming from a certified Technician. You always put the Positive cable on FIRST AND OFF LAST. Everything else the gentleman said up top is correct. You only need to remove the negative cable for few mins.

 

Hold the first and the last number on the presets "while holding" press the power button. Right down the two sets of numbers and call ur dealership. They will look it up for you.

 

Off the bottom of what?