Aux Audio button not working

if you have aux button there is a plug wire that mite be in the dash of the car, you could go to the radio manufacture website see if you can find the users manual, or installation guide, operational manual, the aux mite be a wifi option on other device of similar radio, that radio may have many versions and the version you got does not have that option with the cheaper version of radio that was installed when the car was made.
go to manufactures website, service, make, model,
it may need drivers to run the aux.

1. check connections on rear of radio
2. and fuses.
3. if good, bad radio.

Despite your car having an AUX button, you will be disappointed to know this menu is not operational as there is no AUX jack.

That is what I would have suggested.

07 Ranger and Mustang were the first vehicles to come with a factory installed aux jack. All prior vehicles had to have one installed. I believe the Ford kit was called Trip Tunes.

NO there is no line input jack the AUX button was made for the rear video system
but there is a audio adapter you can use go here
to read more about it

FRD04-AUX

That interface most likely is not going to work, because it is not compatible with all the gm radios, don't work good with XM and rear video system,
the problem is the wiring and the software on the interface,

the PIE GM12-AUX v2 works with all the radios in gm vehicles,
radio needs to have a BAND button and CD/AUX

After sitting all day in the parking lot at work, I started the truck to go home and everything seemed back to normal. There must be some sort of time related reset. I have not tried pushing the MODE button again and probably won't until I need to.

no there is no rca jack in the back of the radio you need a audio adapter call FRD04-AUX you can get one from partydown.com

HELLO, ON THE IPOD BOX ARE SEVERAL NUMBER CODES. THEY HAVE TO BE SET TO THE RIGHT NUMBERS ON OR OFF BEFORE THE FACTORY RADIO WILL READ THE BOX. ONCE THE CORRECT NUMBERS ARE SET FOR YOUR VEHICLE THE AUX BUTTON WILL WORK JUST FINE. IF YOU DON'T HAVE THE BOOK WITH THE CODES IN IT. JUST COUNT THE WIRES ON THE ADAPTOR AND THE LOCATION OF THE PINS THEY CONNECT TO. THEN PUSH ONLY THOSE PINS UP IN THE ON POSTION. GOOD LUCK!