Mercedes TPMS Frequency?

[SimpleKev]

Hello, I've been having trouble figuring out what the frequency on my 2009 C-Class is. I'm not sure if it is a 433mhz or 315mhz. Does anyone know which one I should be using? Thanks!

[TPMS Guru]

I believe most North American models use the 315mhz and Asia/Europe models use the 433mhz. Hope this helps!