2012 BMW 335i 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
- Exclusive Coupe 2-Door
- Modern Sedan 4-Door
- Base Sedan 4-Door
- Exclusive Convertible 2-Door
- Sport Sedan 4-Door
- Base Convertible 2-Door
- M Sport Sedan 4-Door
- Luxury Sedan 4-Door
- Base Coupe 2-Door
Engines covered
- 3.0L 2979CC l6 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
BMW of North America, LLC (BMW) is recalling certain 2008-2013 128i and 135i Convertibles, 128i, 135i, and M Coupes, 2007-2010 X3 30si and X3 xDrive30i, 2013-2015 X1 sDrive28i, X1 xDrive28i and X1 xDr
An inflator explosion may result in sharp metal fragments striking the driver or other occupants res
BMW will notify owners, and dealers will replace the driver air bag. On X5 and X6 vehicles, only th
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
The basic conditions for initializing the power windows are not met.
After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
Exterior rear lights do not work.
The 3G network in the US has been shut down. This means that only the 4G network will be available. In the 4G network, voice calls will be transferred via the Voice over LTE (VoLTE) function. For this purpose, the SIM card must perform an I
For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Fuel Injectors to 10 years/120,000 miles as determined by the vehicle's original in-service date.
After an automatic engine start (MSA start), the transmission intermittently goes into the Park "P" or Neutral "N" position without any customer influence.
Component specific limited warranty extension. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle Nitrogen Oxide (NOx) Sensor(s) to: 10 years/120,000 miles as determined by the ve
Showing the 8 most recent of 56 technical service bulletins on file with NHTSA.
The car Hydroplaned while driving on the interstate, spun out of control and slammed into a tree in the rear end. My son was going approximately 65 mph and upon impact no airbags deployed and the stee
The car Hydroplaned while driving on the interstate, spun out of control and slammed into a tree in the rear end. My son was going approximately 65 mph and upon impact no airbags deployed and the stee
The car Hydroplaned while driving on the interstate, spun out of control and slammed into a tree in the rear end. My son was going approximately 65 mph and upon impact no airbags deployed and the stee
Showing the 3 most serious of 30 complaints filed with NHTSA.
