What is Remote Frequency?

Aussigazza · Nov 23, 2018

For my 2002 m3. All my research says it is 433MHz. I do not have the ir version and my build code does not denote a 315MHz according to Realoem.
I am told that my key has the integrated transponder in its pcb.
I have bought a 433 version off eBay that has separate transponder chip and cannot get the remote to sync using the 2 ways I found by searching. The original synced ok both ways.

The eBay seller has asked me what my remote frequency is.

dutchhome · Nov 23, 2018

I believe you can switch those aftermarket keys between frequencies through a combination of button presses. I've never had to do it so I don't recall the magic combination. Maybe you can find the steps online and just give it a try through trial and error.

Aussigazza · Nov 23, 2018

Quick google and the swap is done by holding the unlock down and pressing the boot release 5 times. Key was not sold as dual frequency, but tried it on car and it works!
Everything I could find says E46 M3 is 433. If it has build code ‘S876A = Yes’, it is meant to be 315. My build does not have this as far as all the VIN checks I have done.

All2kool · Nov 23, 2018

This site will tell you.

https://decoder.bvzine.com

CylonRed · Nov 9, 2023

Use a VIN decoder site.

Bali · Nov 10, 2023

The remote frequency is region (geographic market) dependent. Because it has to be approved by local goverments (think FCC equivalent), conform to standards, etc.

The frequency is printed on the receiver. That’s a good way to verify.

TobyB · Nov 10, 2023

US=315
Most of the Rest of the World=433

Don't know? take your car apart and find out.

t

What is Remote Frequency?

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