Xhorse VVDI MB FBS3 Smart Key - PCB Frequency Change with Key Shell Assembly & Disassembly

How to change the frequency on a VVDI MB FBS3 Mercedes smart key board from 315 Mhz to 433 Mhz by desoldering the FRE resistor + how to assemble and disassemble Mercedes FBS3 smart key shell.
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[@lj4124]

Thanks, you just save me $600, I went to the Mercedes dealership last week trying to program the key, this dude have the nerve to tell me they couldn’t program it unless its comes from the dealer and all I needed was the shell because mine was broken. After watching the video I was able to replace it myself, it took me less than 10 minutes I just went outside to to try it, everything work perfectly. thank you so much

[@rayyanimtiaz3792]

Hello, can you help me out? I'm new to this and I want to add push to start to my 2011 e350. The push to start button fits in the key hole but when I press it, nothing happens. I want to know if this will add the push to start feature for my car

[@rayyanimtiaz3792]

Hello, can you help me out? I'm new to this and I want to add push to start to my 2011 e350. The push to start button fits in the key hole but when I press it, nothing happens. I want to know if this will add the push to start feature for my car

[@swarajjoye]

Hi quick question please.
I've programmed a VVDI MB key to a B class Mercedes. Car starts fine, no issues, but remote function won't work. I forgot to remove the FRE resistor from PCB before programming. Default setting 315mhz, but UK we use mostly 433mhz.
So I need to remove the FRE. But now that I've already programmed the key, can I still remove the FRE resistor from PCB, will the key work, and will the remote function works.
I haven't remove resistor yet, just in case keys doesn't work.
Thanks in advance.