CN900 key programmer and PCF7935 write Benz W140 chip

Connecting CN900 4C/4D/46/48 auto key programmer with PC software, CN900 can save the read key code data unlimited, read EEPROM and special transponder, like Mercedes-Benz W140 transponder chip. Here is the picture instruction on writing Benz W140 chip using CN900 key chip copy machine and CN900 Pro 7935.

Tools needed:

CN900 key programmer

CN900 PC software (can be free downloaded from official website)

CN900 Pro 7935 chip (for CN900 only)

Instructions:

Select chip type: 44 Philips CRYPTO

Mercedes Benz C.E master transponder key programming

Click “CALCULATE”

Select key number, tick OK

Click on “PIN CALCULATE” button

W140 chip has been successfully read and written