Havver (ASTRA TT fan blog)

Step by step:
1/ Check presence of these cables (connector can be found after you remove the Radio, heat control and the middle front. The connector is connected to the unit which controls the door lock/emergency flasher )
These cables are going to the instruments

2/ Check if instrument supports the Sport switch.
In EPC: An Km/H instrument which supports Sport is a benziner, is with manual gear has the marking of YN or CE .
With Tech2 in the "IPC"  "Sport switch" menu:  set "Present", this will set the gas/steering wheel reaction to sporty
Cars which have ESP set "Sport chassis" (or sport under-body) , this will allow the switch off of the ESP with continuous 4sec push.

To check if the main instrument supports this functionality check EPC, else perform a physical test, see pictrures:

3/ If it works then buy a control unit which has a Sport button. Install&Enjoy

Benziner mit Schaltgetriebe, Kennungen: YN YJ XJ FJ CE XD UG XY YE UW ZA XK UA ZJ FC (mit Grün sicher gut!)
Diesel mit Schaltgetriebe, Kennugen:  TF UX XR UE ZQ FH YS CJ

evtl. RS

sicher nicht: ZR PD FX PF XF

wahrscheinlich nicht:  BN

Gleich(replacement):
> YN=CE=XD
> PM=YJ=CA=