If you have the MB Remote Keymaker device you can upgrade your set to the WSP Keymaker which allows you to make new keys on the following car models:

- 2003-2007 Sprinter 

W901-W902-W903-W904-W905

The update allows you to make a new key in both cases: when you have one working key and when all the keys are lost.

This is only a software update for KR55 Keymaker, ML Keymaker updated to KR55 or Dodge/Sprinter updated to KR55.

When you paid for updates, write an email to sales@paylesscarkeys.com and enter the order number and the SN number of your device (see manual below) to obtain the activation files.
Watch the video manual on how to update the device:

DOWNLOAD USER MANUAL

DOWNLOAD SOFTWARE INSTALLATION