This is a guide on how to use Xhorse VVDI Key Tool Plus to update Mercedes-Benz FBS3 Smart Key without cutting the resistor off step by step. Also includes the procedure to set frequency and collect bonus points.

How to update MB FBS3 smart key?

Assemble the Benz FBS3 Key to put a battery in, then insert into Key Tool Plus.

Immo programming >> Benz >> Select from system >>Read write key >> VVDI BE key >> Start programming >> Upgrade VVDI BE smart key

Insert MB smart key into device IR coil and press OK!

Please select the version to be upgrade: 1.1.4

Press “Yes” to continue.

Update MB smart key to success!

How to set BE key frequency?

Set BE key frequency >> 315MHz

Set frequence success!

How to verify & collect BE key bonus points?

Click “Online verify BE key”.

Online check VVDI BE Key status, whether it contains bonus points or not. This function only verify, you can use upload points move BE key bonus points to your device.

Input VVDI BE key to device and press OK.

We can see this BE key has bonus points.

Click “Collect bonus points”.

Transfer VVDI BE key bonus points to your device. After upload success, the BE key will not contain bonus points.

Input VVDI BE key to device and press OK.

Success upload bonus points to your device!