One customer gave feedback that his Key Tool Plus cannot read password from Mercedes W164 2008. The tablet keeps showing “Failed!” on step 3 and he asked if gateway is needed in this case.
Connection Diagrams:
Here is the Solution:
Gateway module is required as diagrams, and it should be same module for car
Hope this could help!
Skype: xhorsevvdi.com
Whatsapp: https://wa.me/8613983756354