2020 BMW M8 Gran Coupe Service and Repair Manual

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Factory-Grade Data

2020 BMW M8 Gran Coupe 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

  • Base Sedan 4-Door
  • Competition Sedan 4-Door

Engines covered

  • 4.4L 4395CC 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

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Vehicle Safety Data

2020 BMW M8 Gran Coupe Recalls & Complaints

NHTSA #20V16400019/03/2020Component: SEAT BELTS:FRONT:BUCKLE ASSEMBLY

BMW of North America, LLC (BMW) is recalling certain 2020 X3 xDrive30e, X4 xDrive30i, X4 M40i, X4M, 330i, 330i xDrive, M340i, 840i Gran Coupe, 840i xDrive Gran Coupe, M850i xDrive Gran Coupe, M8 Gran

Consequence

If the air bag and/or seat belt pretensioners deploy improperly in the event of a crash, there is an

Remedy

BMW will notify owners, and dealers will inspect and replace the front seat belt buckles, as necessa

NHTSA #19V88300011/12/2019Component: POWER TRAIN:AUTOMATIC TRANSMISSION

BMW of North America, LLC (BMW) is recalling certain 2019-2020 M5 and 2020 M8 Gran Coupe, M8 Coupe, and M8 Convertible vehicles. The transmission wiring harness can become damaged, resulting in an el

Consequence

An electrical short circuit can cause the transmission to shift to neutral resulting in a loss of pr

Remedy

BMW will notify owners, and dealers will replace any damaged transmission harnesses. All harnesses

TSB #10239601

BMW AG has issued a Delivery Stop effective June 6, 2023 on certain Model Year 2023 - 2024 BMW vehicles that were produced between October 26, 2022 and May 8, 2023.

TSB #10214992

The functionality of the right rear SRR sensor could be reduced which would display the "Driving Assistance" Check Control Message.

TSB #10211863

When locking the vehicle using the remote, the rear roof sunblind closes. It will re-open when unlocking the vehicle.

TSB #10190854

CLICKING NOISE FROM REAR FOOTWELL AREA WHEN MOVING SEAT(S): A clicking noise is heard from the rear footwell area when moving the seat. The clicking noise can occur under either the driver's seat and/or the passenger seat.

TSB #10186214

REPLACE ALL THE IGNITION COILS: The ignition coils may not have been produced to specifications which could lead to irregular running of the engine. A manufacturing defect affecting the ignition coil insulation.

TSB #10182924

SERVICE ACTION - REPLACE RIGHT REAR SHORT RANGE RADAR SENSOR (SRR): The functionality of the right rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.

TSB #10182625

SERVICE ACTION - REPLACE RIGHT REAR SHORT RANGE RADAR SENSOR (SRR): The functionality of the right rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.

TSB #10178996

TICKING NOISE WHILE CORNERING WITHOUT THE BRAKES APPLIED: Ticking noise coming from front wheel while cornering without brakes applied, noticeable at low speeds. The vehicle must be moving.

Showing the 8 most recent of 180 technical service bulletins on file with NHTSA.

No complaints filed No consumer complaints on file with NHTSA for the 2020 BMW M8 Gran Coupe.
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