Originally Posted by tvieso
A diagnostic tool? Can you point me in the right direction for one?
Yes its called Bavarian Technic tool. The enthusiast version can be used for up to 3 different VIN numbers. I purchased mine used with 2 VIN #s remaining off someone here in the forums
One side plugs into your OBD port the other side is a USB and plugs into you laptop. You download the software for free off their website.
Besides diagnosing codes, and setting and resetting service intervals (i.e., oil, brakes etc), you can you use the tool to do whats called command functions...one of them is registering the battery.
When you install a new battery you must register it so the alternator will charge the battery ..registering it with the BT tool is super easy.
You go to
Engine Module> Commands > Battery Replacement Adaption> Click Send Button> DONE (Battery is now registered)