2021 BMW Z4 Service and Repair Manual

4.7 · Trusted by 14,000+ mechanics & DIYers
Regular price $29.99 USD
  • Lightning-Fast Downloads
    Optimized files — even slow connections handle it
  • Instant Search & Navigation
    Jump to any procedure or spec with one click
  • Print One or All Pages
    Bring only the pages you need to the shop
  • Covers Every System & Component
    Every procedure for the 2021 BMW Z4
Sample Preview

Unlock the Full Manual

Complete repair procedures
Wiring diagrams & schematics
Torque specifications
Full search & bookmarks
$29.99
Buy 2+ Manuals, Save 20% Discount applied automatically at checkout
20% OFF
Secure Checkout
No Subscriptions
Factory-Grade Data

2021 BMW Z4 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

  • M40i First Edition Convertible 2-Door
  • sDrive M40i Convertible 2-Door
  • M40i Convertible 2-Door
  • sDrive20i Convertible 2-Door
  • sDrive30i Convertible 2-Door

Engines covered

  • 3.0L 2998CC l6 GAS DOHC Turbocharged
  • 2.0L 1998CC 122Cu. In. l4 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

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Vehicle Safety Data

2021 BMW Z4 Recalls & Complaints

NHTSA #25V63600023/09/2025Component: ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY

BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles. T

Consequence

A short circuit in the starter relay may increase the risk of a fire.

Remedy

Owners are advised to park their vehicles outside and away from structures until the remedy is compl

NHTSA #21V55400021/07/2021Component: SEAT BELTS

BMW of North America, LLC (BMW) is recalling certain 2021 2 Series (230i, 230i xDrive, M240i, M240i xDrive), 330e, 330e Xdrive, 4 Series Coupe (430i, 430i xDrive, M440i xDrive) M4 Coupe, M4 Competitio

Consequence

During a crash, a seat belt retractor that does not function as intended increases the risk of injur

Remedy

Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace

NHTSA #20V70000012/11/2020Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

BMW of North America, LLC (BMW) is recalling certain 2020-2021 Z4 and 2020-2021 Toyota Supra vehicles. The weld between the fuel tank halves may have been insufficiently welded, causing the weld to f

Consequence

The failed weld may allow fuel to leak, increasing the risk of a fire in the presence of an ignition

Remedy

BMW will notify owners, and dealers will replace the fuel tank, free of charge. The recall began De

NHTSA #21V59800002/08/2021Component: ENGINE

BMW of North America, LLC (BMW) is recalling certain 2020 M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, 2020-2021 X4 M40i, 745Le xDrive, 2019-2021 Z4 M40i, and 2020-2021 Toyota Supra vehicles. Dur

Consequence

Loss of braking assist can increase the risk of a crash.

Remedy

Dealers will update the engine management software, free of charge. Owner notification letters were

TSB #11032731

The EVAP systems purge (vent) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in-service date.

TSB #11016441

While driving on an uneven road, a clickingsound is heard from the front bow/cowl panelarea of the convertible top.

TSB #11013048

The convertible top does not open or close.

TSB #10250374

An interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in thecenter of the instrument panel. The groaning noise always occurs when either a ventilation flap, air stratification flap or the reci

TSB #10249015

A vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP) system(NVLD natural vacuum leak detection). For this condition, the following fault is stored in the DME: 190302 - fuel tank ventilation and sc

TSB #10249032

The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3). FaultB7F8F9 HU-H: Reset will be stored in the HU-H3.

TSB #10249027

The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on ho

TSB #10249018

At low outside temperatures (below 40 degrees F) and slow driving speeds (i.e. when parking, maneuvering)with a large steering angle, the front end can be slightly axially misaligned. This can be felt (jerking)/ heard via an acoustic acknow

Showing the 8 most recent of 115 technical service bulletins on file with NHTSA.

No complaints filed No consumer complaints on file with NHTSA for the 2021 BMW Z4.
All Model Years

Other Years of the BMW Z4

Need a manual for a different year? Browse every BMW Z4 we cover.

Explore More

More BMW Models

Browse service and repair manuals for other BMW models in our catalog.