Does anyone in Adelaide have VCDS and is willing to do adjustments to the instrument cluster (VW - year of manufacture 2001.) to bring it's accuracy to normal values. Currently, it's 18% percent off.

It should be pretty straight-forward procedure - just manipulation of the 'distance impulse number' that corresponds to the wheel circumference value - basically, when you change wheel size, the speedo will be off, so by changing 'distance impulse number' to match the wheel size, the accuracy of speedo can be recovered.

My understanding of procedure is as follows:
- Within main directory of VCDS Selection Control Module - select '17-Instruments'

  • Under instruments sub-directory there will be shown controller information (VAG number and software coding) - select 'Coding - 07'

When select code field, the drop menu will show something like this:

00??x0x: Options
+01 = Brake Pad Warning
+02 = Seatbelt Warning
+04 = Washer Fluid Warning
+16 = Sedan (only VW Jetta)
00xx?0x: Country
1 = Europe (EU)
2 = USA (US)
3 = Canada (CDN)
4 = Great Britain (GB)
5 = Japan (JP)
6 = Saudi Arabia (SA)
7 = Australia (AUS)
00xxx0?: Distance Impulse Number
1 = 22188
2 = 22076
3 = 21960
4 = 21848
5 = 22304
6 = 22420
7 = 22532

  • As shown above, the last digit of the code is 'distance impulse number' (factory set = digit between 1 and 7) to be changed to any other digit between 1 and 7; in my case, where speedo reading is less than actual speed, the selection should be the number that is less than factory set number... will probably need to play with few digits to see if speed reading matches actual speed.

If above is correct, the minimum time engagement would be required - a few minutes to adjust the value and additional few minutes to test the speedo reading against GPS (low speed testing is sufficient as 18% error is read across all speed values).

Please note I am willing to pay for your engagement.

Please let me know if any concerns with above procedure description. Thanks!