CN900 key programmer read and write Benz W140 chip

Here is the step-by-step instruction on writing Benz W140 chip using CN900 46/48/4C/4D auto key programmer and CN900 Pro 7935 chip.

If you download CN900 PC software to work with CN900 key copy machine, CN900 can save the read key code data unlimited, read EEPROM and special transponder, like Mercedes-Benz W140 transponder chip.

Tools needed:

CN900 key programmer

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

CN900 Pro 7935 chip (for CN900 only)

cn900-pro-7935

Instructions:

Select chip type: 44 Philips CRYPTO

cn900 pro 7935-1

CN900 key programmer write W140 chip 1-2

Mercedes Benz C.E master transponder key programming

Click “CALCULATE

CN900 key programmer write W140 chip 2-3

Select key number, press OK

CN900 key programmer write W140 chip 3-4

Click on “PIN CALCULATE” button

CN900 key programmer write W140 chip 4-5

W140 chip has been successfully read and written

CN900 key programmer write W140 chip 5-6

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