2012 BMW Z4 Service and Repair Manual

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Covers all 2012 Z4 trims — sDrive35is Convertible 2-Door, sDrive35i Convertible 2-Door, sDrive28i Convertible 2-Door +1 more ·
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2012 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

  • sDrive35is Convertible 2-Door
  • sDrive35i Convertible 2-Door
  • sDrive28i Convertible 2-Door
  • sDrive20i Convertible 2-Door

Engines covered

  • 3.0L 2979CC l6 GAS DOHC Turbocharged
  • 3.0L 2979CC l6 GAS DOHC Naturally Aspirated
  • 2.0L 1997CC 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
NHTSA #12V30200028/06/2012Component: STEERING:ELECTRIC POWER ASSIST SYSTEM

BMW IS RECALLING CERTAIN MODEL YEAR 2011 1-SERIES ACTIVE E AND MODEL YEAR 2012 Z4 VEHICLES. VARIATIONS IN ELECTRICAL CURRENT MAY OCCUR WITHIN THE ELECTRIC POWER STEERING ASSISTANCE SYSTEM, LEADING TO

Consequence

SUDDEN LOSS OF STEERING ASSISTANCE MAY INCREASE THE STEERING EFFORT REQUIRED TO CONTROL THE DIRECTIO

Remedy

BMW WILL NOTIFY OWNERS, AND DEALERS WILL REPLACE THE STEERING ASSISTANCE MODULE, FREE OF CHARGE. TH

NHTSA #13V45400026/09/2013Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM

BMW of North America LLC (BMW) is recalling certain model year 2012-2014 320i, 328i, 320i xDrive, and 328i xDrive sedans; model year 2014 328i xDrive Sports Wagons; model year 2012-2013 528i and 528i

Consequence

A failure of the brake vacuum pump results in a reduction in braking power that could increase the r

Remedy

BMW will notify owners, and dealers will modify the vehicles to prevent insufficient vacuum pump lub

TSB #11032735

The Footwell Module (FRM) limited warranty for defects in materials and / or workmanship has been supplementarily increased to 15 years / 186,000 miles as determined from the original first in-service / delivery date.

TSB #11031570

While performing a 12-Volt battery jump start, disconnect, or replacement, Vehicle test, and/or Programming procedure- the BMW Footwell Module (FRM) may become unresponsive. As a result, one or more of the following vehicle electric system-

TSB #11015849

The Footwell Module (FRM) limited warranty for defects in materials and / or workmanship has been supplementarily increased to 15 years / 186,000 miles as determined from the original first in-service / delivery date.

TSB #11014417

The Footwell Module (FRM) limited warranty for defects in materials and / or workmanship has been supplementarily increased to 15 years / 240,000 miles as determined from the original first in-service / delivery date.

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 #10249437

The basic conditions for initializing the power windows are not met.

TSB #10225126

Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column.

TSB #10204534

For the above-referenced vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the engine timing chain and oil pump drive chain modules to: 7 years/70,000 miles as determined by the vehicle's original in-service

Showing the 8 most recent of 24 technical service bulletins on file with NHTSA.

20250211Component: ENGINE AND ENGINE COOLING

The contact owns a 2012 BMW Z4. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was not

20250211Component: ELECTRICAL SYSTEM

The contact owns a 2012 BMW Z4. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was not

20250127Component: ENGINE AND ENGINE COOLING

The contact owns a 2012 BMW Z4. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was unav

Showing the 3 most serious of 7 complaints filed with NHTSA.

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