Electric Drive Powertrain Control Unit, Basic Function - GF08.20-P-9892A

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2023 Mercedes-Benz E63 S AMG, 2023 Mercedes-Benz E53 AMG, 2023 Mercedes-Benz E350, 2022 Mercedes-Benz E53 AMG, and 2022 Mercedes-Benz E350. However, it is still accessible from the selected car via links, so may be relevant.

Model all (CAR) with code ME01 (Electric motor)

Model all (CAR) with code MEB2 (Entry variant with M-battery)

Model all (CAR) with code MEC2 (Mid variant with M-battery)

Model all (CAR) with code MEC3 (Mid variant with L-battery)

Model all (CAR) with code MEE3 (Top-model variant with L-battery)

Model all (CAR) with code MEF3 (AMG Entry variant with L battery + 4MATIC)

Model all (CAR) with code MEH2 (Sport variant with M-battery)

Overview

This document contains information on:

General
Location
Function requirements

Location

Depending on the model, the powertrain control unit (1) is located in the front passenger footwell or in front of the left A-pillar.

Example illustration

Function

General

The electric drive powertrain control unit is the central control unit for all functions of the drivetrain.

It is connected to the network architecture of the vehicle.

Courtesy of MERCEDES-BENZ USA

Function requirements

Circuit 30t ON

Function

The tasks of the powertrain control unit (1) include:

Traction management
Energy management
Heat management in the drivetrain
- Electric drive low-temperature circuit
- High-voltage battery low-temperature circuit
High- and low-voltage coordination
On-Board Diagnostics
Interface (gateway) between the connected bus systems

The powertrain control unit (1) processes the following information, for example:

For vehicles with two electric machines, the corresponding information is processed and sent for each machine.

Circuit status
Voltage/high-voltage battery current
High-voltage battery charge level
Temperature of high-voltage battery
DC/DC converter temperature
Temperature of alternating current charger for high-voltage battery
Maximum charge/discharge current
Contactor status
Status of alternating current charger for high-voltage battery
Actual value of electric machine torque
Actual value electric machine engine speed
Available torque from electrical machine
Status of electrical machine
Fan motor status
Accelerator pedal sensor
Start/stop button
Status of the DYNAMIC SELECT switch
Status of steering wheel gearshift buttons

The powertrain control unit (1) processes these input factors and transmits the following information, for example:

Specified value of the electric machine torque
Electric machine torque limitation
Direction of rotation of electric machine
Drive train operational
Transmission mode