2014 BMW 335i [0.00] It has both. There is a small lithium-ion battery under the hood and a larger AGM battery in the trunk. I'm not exactly sure what it's for, but I think the li-ion battery is to allow for faster charging and discharging when needed while the AGM is for starting the car and steady standby power. Appreciate 4.
A battery reset on a BMW is used to reset a computer also called a control moduule that may be malfunctioning. A common component that can lock up is the TCU In 2011, BMW officially introduced the sixth generation of the 3 Series, a popular premium car. The model line consists of a sedan under the index F30, station wagon F31 and F34 - a modification with a sloping roof.