Quote:
Originally Posted by watsonwild
Still running original battery on my 2011 35i. I was going to be proactive and replace it so went to the local BMW dealership. The guy at the parts counter talked me out of it, said he has seen them last as long as 15 years!
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My general recommendation is, get it replaced and registered after 10 years to avoid lower voltage issues.
Due to the integrated energy management (IBS sensor), you always will be able to start the engine, but the different control units may get shut down unexpectedly.