🏷️ Basic Information

Make:

BMW

Model:

1 Series

Chassis Code:

F20 (5-door hatchback), F21 (3-door hatchback)

Model Year:

2012

👋 Introduction

Target Audience:

BMW 1 Series F20/F21 owners seeking to perform DIY maintenance, repairs, and diagnostics, as well as independent repair shops and automotive technicians.

Value Proposition:

Provides factory-level, vehicle-specific repair information, eliminating reliance on generic manuals or costly dealership services. Offers significant cost savings and empowerment for owners.

Format Advantage:

Single, easy-to-use PDF manual with printable pages and searchable content, offering convenience over traditional multi-volume paper manuals.

📋 Manual Details

Primary Coverage:

Comprehensive service, maintenance, diagnosis, and repair

Estimated Page Count:

Likely several thousand pages, typical for factory service manuals covering all models and repairs A-Z. Exact count not provided.

Type:

Factory Service and Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Powertrain:

Engine mechanical, control systems, fuel service, emission control, intake/exhaust/cooling, lubrication, ignition, starting/charging, automatic transmission, manual transmission, transfer case, propeller shaft, drive shaft, differential, axles

Chassis:

Suspension, steering column, power steering, wheels, tires, brake control, brakes, parking brake

Electrical And Body:

Air conditioning, supplemental restraint system (SRS), seat belts, engine immobilizer, cruise control, wiper/washer, door locks, meters/audio/visual, horn, windshield/glass/mirrors, instrument panel, seats, engine hood/doors, exterior/interior, general electrical, multiplex/CAN communication

Engine Control Module:

Engine Control System (DME/ECU) diagnostics, programming, and repair procedures.

Transmission Control Module:

Automatic Transmission Control (TCM) diagnostics and repair.

Air Conditioning System:

HVAC system diagnosis, refrigerant handling (with safety precautions), component replacement (compressor, condenser, evaporator), and control unit repair.

Supplemental Restraint System:

Detailed safety procedures for working with SRS components (airbags, seatbelt pretensioners), including diagnostic codes and replacement.

Maintenance:

Scheduled maintenance, fluid checks and changes, filter replacements, general inspections

Diagnostics:

Troubleshooting, fault code interpretation, diagnostic procedures for all systems

Repair:

Step-by-step repair instructions for all mechanical, electrical, and body components

Wiring Schematics:

Comprehensive and detailed wiring schematics for all electrical systems, crucial for troubleshooting electrical issues.

Diagnostic Troubleshooting Charts:

Flowcharts and symptom-based diagnostic guides to identify and resolve issues efficiently.

Depth:

Complete factory-level technical information, including detailed procedures, diagrams, illustrations, and wiring schematics.

Component Replacement:

Detailed instructions for the removal and installation of all major and minor components, from engine parts to interior trim.

Calibration Procedures:

Procedures for calibrating various sensors and control modules after replacement or repair (e.g., steering angle sensor, transmission adaptations).

📊 Manual Specifications

File Type:

PDF

Printability:

All pages are printable, with capability to enlarge images for detail.

Binding:

N/A (Digital format - no physical binding)

Paper Quality:

N/A (Digital format - user selects print paper)

Os Compatibility:

Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac compatible.

Required Software:

Adobe PDF Reader and Winzip (free online).

⚙️ Engine Specifications

Engine Variants Covered:

Covers all engine variants for the 2012 F20/F21 1 Series, which typically include petrol engines such as the N13 (1.6L), N20 (2.0L turbo), and diesel engines such as the N47 (2.0L turbodiesel). Specific engine codes are detailed within the manual.

Performance Data:

Includes detailed specifications for horsepower, torque, engine management, and performance tuning parameters for all covered engine variants.

Fuel System Details:

Comprehensive coverage of fuel injection systems, fuel pumps, injectors, fuel pressure regulators, and emissions control related to the fuel system.

Emission Control Systems:

Detailed explanation and repair procedures for emission control components, including catalytic converters, oxygen sensors, and EVAP systems.

Lubrication System:

Coverage of the engine oil pump, oil filter housing, oil pan, and oil passages, including lubrication schedules and capacities.

Ignition System:

Details on ignition coils, spark plugs, crankshaft position sensors, and engine timing.

Charging System:

Information on the alternator, voltage regulator, battery specifications, and starter motor.

🔧 Transmission

Standard Transmission Type:

Likely includes manual and automatic transmission options, common for BMW models of this era. Manual transmissions are explicitly mentioned.

Optional Transmission Type:

Automatic transmissions, potentially including Steptronic (8-speed) for certain engine variants, are expected to be covered.

Transmission Service:

Detailed procedures for transmission fluid and filter changes, torque converter service, and internal transmission repair, including diagnostic information.

Drivetrain Components:

Service and repair for propeller shafts, driveshafts, and universal joints if applicable to specific AWD models.

Differential Service:

Coverage of front and rear differentials, including fluid specifications and repair procedures.

📐 Dimensions

Exterior Dimensions:

Specific dimensions (length, width, height, wheelbase) for both F20 and F21 body styles are detailed in the manual, crucial for bodywork and clearance considerations.

Wheelbase:

Specific wheelbase measurements for F20 and F21 models, affecting handling and interior space.

Wheel Bolt Pattern:

Standard wheel bolt pattern (e.g., 5x120) and hub bore size for correct wheel fitment.

Curb Weight:

Curb weights and gross vehicle weight ratings (GVWR) for various configurations are provided, essential for load capacity and handling.

Axle Weight Ratings:

Front and rear GAWR (Gross Axle Weight Rating) for safe loading.

🛡️ Safety Features

Crash Test Ratings:

While the manual itself doesn't contain crash test ratings, it details the components of the Supplemental Restraint System (SRS), including airbags, seat belt pretensioners, and associated control modules, which contribute to safety.

Active Safety Systems:

Coverage of braking systems (ABS, DSC - Dynamic Stability Control), power steering, and potentially electronic stability control modules.

Passive Safety Systems:

Detailed information on the Supplemental Restraint System (SRS), including airbag deployment, seat belt mechanisms, and body structure integrity.

Seat Belt Systems:

Details on seat belt operation, pretensioners, and associated wiring and control modules.

💡 Technology Features

Infotainment Systems:

Includes diagnostic and repair information for infotainment units, displays, audio systems, and related control modules.

Driver Assistance Features:

Coverage of systems like cruise control, parking sensors, and potentially advanced systems if equipped, detailing their operation and maintenance.

Engine Immobilizer System:

Diagnostic and repair information for the anti-theft engine immobilizer system.

Cruise Control System:

Repair and troubleshooting for cruise control functionality.

Multiplex Can Communication:

Detailed explanation of the vehicle's multiplex/CAN (Controller Area Network) bus systems, essential for diagnosing communication faults between ECUs.

🔧 Maintenance

Typical Service Intervals:

The manual will provide BMW's recommended service intervals for oil changes, filter replacements, brake fluid, coolant, and spark plugs, often based on Condition Based Service (CBS) monitoring.

Engine Oil Specifications:

Crucially lists specific BMW Longlife engine oil specifications (e.g., BMW LL-01, LL-04) and viscosities (e.g., 0W-30, 5W-30) required for different engines. Also covers transmission fluid, brake fluid (DOT 4), coolant (G48), and power steering fluid (Pentosin CHF 11S or equivalent).

Coolant Specifications:

BMW-specific coolant type and concentration (e.g., G48 ethylene glycol based) and refill procedures.

Brake Fluid Specifications:

Required brake fluid type (e.g., DOT 4) and bleeding procedures.

Power Steering Fluid Specifications:

Type of power steering fluid and capacity.

Common Issues Coverage:

While not a consumer guide to common issues, the detailed diagnostic procedures within the manual are designed to address known fault patterns and component failures specific to the F20/F21.

Filter Part Numbers:

The manual will reference specific OEM filter part numbers for oil, air, cabin, and fuel filters for ease of sourcing correct replacement parts.

📚 Vehicle History

Bmw Heritage:

BMW's reputation for engineering, performance, and premium quality is reflected in the thoroughness of its service documentation.

1 Series F20 F21 Introduction:

The F20 (5-door) and F21 (3-door) represent the second generation of the BMW 1 Series, launched in 2011 and 2012 respectively, marking a significant evolution from the E87/E81 predecessors.

Manufacturing Locations:

BMW vehicles are globally manufactured, with primary production facilities in Germany. Specific production details for the F20/F21 are factory-specific.