How to: reset/renew Mercedes Benz W164 Siemens VDO ISM using CGDI Prog MB key programmer on bench.
Follow cgdi prog wiring diagram to connect ISM unit with CGDI MB
In CGDI MB software, select Auto Computer, Module type W164->ISM/DSM/ESM
Read ISM information
Press Get to calculate erase password
Erase password calculated successfully
Reset ISM success