Hi folks, I purchased a 2008 X5 m a few months back and have had some electronic issues. It seems my x5 has a dual battery set up in the back. There are two optima 6v red tops, at 50ah, one on either side. I assume they’re hooked up in series to attain 12v, but that means I’m only running 50ah - correct?

When I use BimmerLink the car shows having a 90ah battery. Seems like whoever replaced the batteries didn’t re code the system to 50ah.

Would this cause electrical issues/error codes?

And could I simply recode it to 50ah or would this mess things up?

TIA




Sent from my iPhone using Tapatalk