1997-2001 Mercedes SL / 3-Button Flip Key / HU39 / PCF7935 44 Chip for KR55 Key Maker (AFTERMARKET) Aspen This will allow you to

This will allow you to wake up the control units in the vehicle and establish OBD communication without having a key

When power is restored

Program proximity keys

Single Pushbutton Program-Erase (for security)

1997-2001 Mercedes SL / 3-Button Flip Key / HU39 / PCF7935 44 Chip for KR55 Key Maker (AFTERMARKET) Aspen This will allow you toRFK MB 005 Brand New Aftermarket Replacement For: For use with the KR55 Key Maker (ONLY) Transponder: PCF7935 44 Chip Frequency: 315MHz Aftermarket Flip Blade Included Test Key: HU39 Compatible with the following: 1997 2001 Mercedes SL W129 1997 2001 Mercedes S Class W140 1997 2001 Mercedes G Class W461