Hello, I just got a an 2010 tl and the navi and radio codes are locked. It has a rebuilt title so theres no warranty. I dont have too much time to go to the dealer so i wanted to know how i could get the serial number for both the radio and navi. The manual is not with the car either, and the sticker for the serial number is gone too. I tried pushing 1 and 6 at the same time and the power button but it didnt work. If you have any other suggestions please let me know!

 

well I ran into the same problem with my 2001 Acura TL. the person who sold the car to me left the country. I called acura gave my win number, they asked for a proof of ownership and I provided that, and called the 1-800 number and the gave me the code.
Since then I saved the code on my google contacts for future use. you can try this way.

 

I would bring to car up to Acura and give them the VIN and proof of ownership and they can look in the system for the radio code. that what i did so i'm pretty sure you can still do it.