Just purchased a 2003 z4. I love it! Quick question: Noticed that when unlocking with key that sometimes doesn't open doors and I have to cycle between lock and unlock. Sometimes just drivers then sometimes just passenger then sometimes both. I know that double click to open unlocks all locks but this this isn't consistent. Does anyone think that this may be due to a control problem or battery issue in key? I know that that lithium battery is sealed and isn't cheap to replace. I only have one key so can't try another. Any help would be appreciated. Thanks.
Cheers and safe driving
Jason
Cheers and safe driving
Jason