Quote:
Originally Posted by white46
Also make sure you've purchased correct MHz key.
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Yes, I learned that lesson. I have 4 China keys that supposedly switch frequencies with a button combination, but I have no way to verify. My X5s use 433 MHz. The BMW key is the same old one that used to work, but the battery died. I replaced the battery, but it doesn't work anymore. I also recently replaced the GM3 to solve some door locking issues.