Sorry ... I completely forgot I had made this post.
I don't think it's the batteries, one key is 1.5 years old and the other one is original (2006).
Do you still change the batteries in these? I thought they charged in the ignition? (I don't have comfort access).
The word "there" can appear as a pronoun, as in “over there".
"Their" is a possessive pronoun. In a phrase like “Susan and Bill's car,” it could be used to to make a new phrase: “their car.”
”They're” is a contraction of “they are.”
“They are” should always be able to replace “they're.”
Extra credit: It's "I'm looking for an M3" not "I'm looking for a M3".