BMW 3 Owners & Service Manuals

BMW 3: Low-voltage Vehicle Electrical System

BMW 3 Series G20 (2018-2026) Training manual / Low-voltage Vehicle Electrical System

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 Voltage supply

The 12 V vehicle electrical system of the G20 PHEV is essentially the same as the electrical system of the G20. The main difference lies in the fact that the power supply is no longer by the al

 Start-up system

Starter motor The combustion engine B46 can be started via the conventional starter motor and the electrical machine. The following table shows when and under which conditions the respective start

 Terminal control for driving readiness

Terminal control from driver's view Vehicle condition - DRIVING Vehicle condition - RESIDING Vehicle condition - PARKING Transitional condition for establishing driving readiness, ending driv

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 HD Radio reception

Concept Many radio stations broadcast both analog and digital signals. General information When setting a station with a digital signal, it may take a few seconds before the station plays in digital quality. Information about HD Radio stations whose station name ends with ...HD or with ...HD1: In a

 Overview

Buttons on the steering wheel With steering and traffic jam assistant: Cruise control on/off. With steering and traffic jam assistant: Select function. Without steering and traffic jam assistant: Cruise control on/off. Store current speed. Speed Limit Assist: take over suggested speed manual

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