Steps to change Xhorse Mercedes BE key frequency by IR, from 315 MHz to 433 MHz:
Mercedes BE key made by Xhorse:
Run VVDI MB software, and choose “Set Key Remote Frequency”
Then it shows: Support change remote frequency via IR for some special keys.
Click on “Read Frequency”
VVDI Mb reads out the frequency: 315MHZ.
Set frequency as 433MHZ
The frequency is set successfully.
Then read the frequency again. Now, it is 433MHZ