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I have renewed keys and programmed them to different vehicles and have been getting complaints of the lock and unlock functions not working on the key FOB remote. I've tried soldering in a new battery (non comfort) with no change. Is there some sort of initialization procedure for the e90s that I am unaware of?
I will have to double check next time I program another key. Is there a recommendation on what key frequency reading to purchase or will any suffice as long as they will read 300 - 800?I didnt know if there was some sort of sync procedure that needed to be done for the e90 series FOB?