The main difference lies in Mercedes-Benz, VW, Audi software and adapters to work with.
Auro IM600 canread PIN/CS from AUDI Q5/A4/A5 2015-2017 and learn keys to Mercedes-Benz, but IM100 cannot work with Mercedes-Benz, VW, Audi for immobilizer functions.
Auto key Programmer IM600 use UP400.IM100 use UP200.
Up200 doesn’t allow for eeprom and use of breakout leads through the custom pinouts.
Now Otosys IM100 with UP400 can work for Mercedes key programming as well as Otosys IM600 does.
Immobilizer functions: Otosys IM100 vs IM600:
Note:This function is supported.
This function is not supported.
Some of the listed functions are manufacture dependent. The functions and vehicle coverage expand with new update release.