You have to start in the correct top menu. I think it's the bottom one "service" or similar. Then you have to guess the correct submenu "chassis" most likely.

I replaced TC for a client and first attempt I could not find the function but enough poking around I did find it.

Definitively update to latest software, but it should be able to do the reset either way

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)