Vag com

[edgy]

So I dug up a VAG COM cable and pulled some codes and wanted to do a little fooling around while I was in there. I wanted to set my gauge needles to lit all the time and adjust the range of the headlights to adapt to the new suspension height. But when I go to channel 19 under the Instruments module, the value is set at 1 and anything other than 0 or 1 causes an error. I searched all channels (0-99) and did not run across any channels with a 5-digit setting that would have resembled the dash lighting scheme. Also, my xenon range is set at ten, and will not change to any other number I enter after I click "Do it!"... Car is a 2001 225 roadster, and I have sucessfully recoded the windows and locks in the past. Does anyone have a better suggestion for me?

Or a comprehensive list of VAG-COM coding tricks?

[frostyflax17]

i didn't know you could make the needles glow at all times? i know it was standard on the later model tt's, but thought i was stuck with what i had for my 01'

let me know how this works out. looks badass during the day with the needles lit.

[edgy]

It could very well be a feature only on the '02 and up CAN-BUS cars...

[l88m22vette]

The needles lit up is not a big deal, it is not obvious (it doesn't look like a little lightsaber or anything :lol:)

[frostyflax17]

i found something related to playing with the surround system.

http://www.ibiblio.org/tkan/audi/radios/concert.html

[frostyflax17]

did a lil more research into it... someone try this out.

Coding Bose for MEGA Bass

The Concert radio can be coded for two different Bass/Treble Vehicle-specific tone control slopes. One is for Bose/Concert and the other for Concert only. You can change this setting by recoding the radio module with either a VAG1151/1552 or VWTOOL. The standard coding for a TT w/bose and secondary display is 00517. If you don't have a cd changer, secondary display, etc. this value may vary in the first decimal place (see page 5 of audi tech document on adding a CD-Changer for complete details. URL at end). We are only concerned with the value at the second decimal place (in the example above it is 1 for Bose tone slope). If you have the radio recoded and change the 1 to a 0 (zero), you will enable the other Vehicle-specific tone control.

Once the radio is recoded you will notice the "Bose" missing from the display on powerup. The Bass/Treble range is now +-6 but the adjustment is more dramatic.

I must say, the effect on the Bass is incredible! It may not be a "true" sound in the Bose universe but many will find it an improvement.

Paul adds: "I changed the code in my old TT 4 years ago and the extra boost I got from the bass was superb. I have bought a new TT and need the code again (I have unfortunately forgotten it). Are you saying that the code (in the case of Bose/Concert with CD changer) should be changed from 00517 to 00507? - 4/2/2004

This FAQ applies to: All Audi TT