Few VAG-COM mods...
Just to be clear, the codes I post may be my discovery or may not. This is not about taking credit from someone elses work as like the Q5 thread where I collected VAG-COM codes and part numbers and DIY service info, this thread is going to follow same structure.
Updated 16 Sep 2012
Before you read further, these are codings I have tested on my 2012 TDI and I take responsibility for what I do to mine but you do any of these at your own risk.
This disclaimer "proceed at your own risk" is added after on other forum someone came bitching about reading my vag-com codings on Vortex and the 001568 code causing high oil pressure on his car.
ANYONE working with vag-com should know the basic rules and here is few good to start from...
- Before doing any coding change, take FULL SCAN from your vehicle and save it as original file so you have backup and you can always go back to what it was.
- Manufacturing date may change control modules on very same trim's so each car can be different and coding may work or may not work.
Now back to coding,
Bytes have 8 digit counting from RIGHT SIDE (00000000), counting starts from zero, not from one (e.g. 012345... not 12345...) and with alphabets I have marked the individual digit to be changed.
Zeros and A,B,C etc are just to pinpoint digit itself, zero does not mean you have zero or 1 (different country different settings)
If VAG-COM does not have explanations on specific bytes then you have to manually overwrite byte.
Known transmission coding - 16 Sep 2012
001168 (binary calculation by member on other forum)
001368 (factory code for 4Motion vehicles sold in US)
001568 (factory code for 4Motion vehicles sold in Germany)
Gear display next to D or S
Change C,B and A to 1
02-Auto Trans -> Byte 1: 00010101
After the coding, reset the transmission with following procedure...
On P -->
turn power on (don't start) -->
press accelerator all way down (to kick down) and keep it floored 30 seconds -->
release the pedal -->
turn the power off -->
get out and lock the doors -->
unlock the car -->
start the car and drive off like you normally drive so the transmission learns the drivers driving pattern.