I did 6 merc w221 using FVDI obd without any issues.. there is an instruction on how to do it step by step in the abrites manual…. can do all control unit with it. need like 1.5 to 2 hours to finish it. it block can between IC and EIS.
I only have the R270 programmer at the moment and digiprog 3 so I think can blocker is going to be the cheapest way. If for Mercedes only, vvdi mb tool should be the best choice…program keys and repair dash km..all ok.
Two methods i wanna recommed:
(Good for Mercedes) Using vvdi mb bga tool repair dash mileage:
Vvdi mb tool is a good solution of mercedes read & write keys/CGW (ZGW), EIS & ELS tools, password calculation of working keys and lost all key, prepare key file, renew ECU/gearbox/ISM, repair KM, etc.
It can repair dash km for models as below:
- C(W204), GLK(X204), CLK(W207), E(W212), SLS(W197), CLS(W218)
- R-Class(W251), GL(X164), ML(W164)
- E-Class(W211), CLS(W219)
- S-Class(W221), CL(216)
- W166, W172, W246, W231
W221 is listed…
If you want block KM synchronization between EZS and dashboard, you need backup CGW(Gateway) EEPROM and FLASH before write KM
block KM synchronization require update Gateway FLASH and EEPROM. You can provide the FLASH and EEPROM that you have. If you don’t provide these files. We will use the FALSH and EEPROM from Gateway, only need some time to read it.
(Easiest) Using Fvdi abrites commander obd change mileage:
please reference to :http://www.mileageprogrammer.com/fvdi-adjust-odometer/