Look here: a step-by-step guide of how to do Mileage adjustment on a 2011 Volkswagen Polo 6R with a VDO cluster,OBDSTAR X300M and OBDSTAR MT401 both can do it.
Connect Connect with X300M and vehicle.
pls wait for a moment
->(Identifi odometer types)Polo->NEC+24C64 VDO-12->Mileage adjustment
Please enter a a filemame to save
Date backup is complete!
The current mileage of 139104km?press ENTER to continue,Press ESC to exit
Please input the mileage of the adjustment,like 14500KM
Then we cheak the dashboard, now it’s 14500KM
PS:Compare with OBDPROG MT401,OBDSTAR X300M can work with newest car models such as Audi TT, A3 etc, in general, OBDSTAR X300M is upgraded to the latest version, followed by OBDPROG MT401. Therefore OBDSTAR X300M is something better than the rebadged OBDPROG MT401