Hi,
I am trying to correct my speedometer, and odometer, due to a 5% smaller wheel diameter.
I have found the following in the KMB module:

Speedometer Calibration
KALIBRIERUNG_TACHO (Data: 25)

Impulses per KM for Tacho and Odometer:
K_ZAHL_TACHO (Data: 181,127)
K_ZAHL_TACHO_KOMPL (Data: 74,128)
K_ZAHL_WEG (Data: 181,127)
K_ZAHL_WEG_KOMPL(Data: 74,128)

I can make changes to account for 5% more impulses per KM and successfully code these to the car, however there is no change in the speedometer error.

Data values I have tried as follows:

KALIBRIERUNG_TACHO (Data: 25 and also tried 0)

K_ZAHL_TACHO (Data: 96,134)
K_ZAHL_TACHO_KOMPL (Data: 159,121)
K_ZAHL_WEG (Data: 96,134)
K_ZAHL_WEG_KOMPL(Data: 159,121)

Other threads I have found utilise different wert options in NC Dummy, however I do not have these for the ZAHL values. I have to manually calculate the correct values (hex) and add them via NCSDummy.

I am hoping somebody maybe able to tell where I have gone wrong... are there more settings in another module that also require recoding?

 

Did you turn off the intentional Speedo error? Only applies to the digital speed readout, not the analog needle readout. The analog is 3 mph off intentionally.