Battery Life?

My '06 Touring currently has a 95 amp hour factory battery which 7yrs 3 mo old which I put on a BMW trickle charger once a month. I've started to get some erroneous warning displays on the dash when I get in and put the key module in; I've never had a low battery voltage warning or had to jump it. Does this sound like it's time to get a new battery?

I live in Southen California, so cold is not a problem.

 

You would not get that message because your alternator causes that message. When your battery is on its way out you will get the light trifecta or not able to start your car. When this happens you can either test your battery to see where it stands or replace it. In your case it's 7 years old that alone would tell me the battery needs replacing.

 

I'd say most likely. 7 years is a good run for a bimmer battery (although I have gotten 8 . There are so many electrical gremlins with BMWs that can be tied back to the battery, buying a new one (don't forget to register it) is probably good preventative maintenance anyway.

 

+1 and see Is My Battery Bad? - 5Series.net - Forums.