2020 Mercedes-Benz G500 Service and Repair Manual

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Fits the 2020 G500 — 4Matic Sport Utility 4-Door ·
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2020 Mercedes-Benz G500 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • 4Matic Sport Utility 4-Door

Engines covered

  • 4.0L 3982CC V8 GAS DOHC Turbocharged

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #23V09700017/02/2023Component: ELECTRICAL SYSTEM:WIRING

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2021 G550 and AMG G63 vehicles. The front axle wiring harness may chafe against an oil cooler and become damaged, which can cause a loss of an

Consequence

A loss of anti-lock brakes or electronic stability control can increase the risk of a crash.

Remedy

Dealers will inspect and either install a protective sleeve or replace the front axle wiring harness

NHTSA #20V09000014/02/2020Component: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019-2020 G550 4MATIC and G63 AMG 4MATIC vehicles. An electrical resistor within the differential locking module may malfunction, interrupting com

Consequence

Deactivation of the vehicle stability control system or anti-lock brakes may increase the risk of a

Remedy

MBUSA will notify owners, and dealers will inspect the differential locking modules and replace them

NHTSA #20V24700001/05/2020Component: LATCHES/LOCKS/LINKAGES

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019-2020 G550 and G63 vehicles. The embossed lock symbol for the child safety lock on the rear doors may indicate the incorrect lock status of th

Consequence

If an unrestrained child unexpectedly opens a door, they may fall from the vehicle increasing their

Remedy

MBUSA will notify owners, and dealers will install a label on the rear doors with the correct operat

No service bulletins No technical service bulletins on file with NHTSA for the 2020 Mercedes-Benz G500.
No complaints filed No consumer complaints on file with NHTSA for the 2020 Mercedes-Benz G500.

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