BMW 3 Owners & Service Manuals

BMW 3: Introduction

The function of the brake system of the G20 PHEV is to decelerate the vehicle safely under stable conditions. Vehicle deceleration is made up of the following elements:

  • Conventional hydraulic braking
  • Regenerative braking

Thanks to regenerative braking it is possible to convert the kinetic energy of the vehicle into electrical energy with the help of the electrical machine, and to therefore charge the high-voltage battery unit.

The service brake of the G20 PHEV is based on that of a conventional G20. In this chapter only the hybrid-specific components and functions are described.

In comparison to the conventional G20, the following new or modified components are used:

  • Brake pedal travel sensor
  • Brake vacuum pressure sensor
  • Modified vacuum brake system
  • Modified DSC unit

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     System overview

    System overview of hybrid brake system Hydraulic braking Signal path Regenerative braking High-voltage battery unit Electric Motor Electronics (EME) Electric motor Drive train Digital Moto

     Hydraulic braking

    G20 PHEV, hydraulic braking The brake booster is operated via the driver's foot operation, and the brake actuation is determined by means of the brake pedal angle sensor. Depending on the brak

     Regenerative braking

    The regenerative braking makes possible brake energy regeneration. The electrical machine works here as an alternator and brakes the gears via automatic transmission - propeller shaft - re

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     Displays and operation

    The function does not have any separate display or operating elements. The function is only available in the HYBRID ECO PRO driving mode. The function cannot be deactivated. Recuperation is displayed as usual in the instrument cluster below the drive-ready state indicator (CHARGE area).

     Frequently Asked Questions

    Why can the current position not be displayed? The vehicle is located in an unrecognized region, is in a poor reception area, or the system is currently determining the position. Reception is usually best when you have an unobstructed view of the sky. Why does destination guidance not accept

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