BMW 340i 2012-2018 HVAC Specifications
BMW 340i 2012-2018

BMW 340i 2012-2018 HVAC Specifications

Explore the detailed HVAC specifications for the 2012-2018 BMW 340i, including system components, maintenance tips, and technical insights.

Updated

2012-2018 BMW 340i HVAC Specifications Overview Specifications

This document provides a comprehensive overview of the HVAC (Heating, Ventilation, and Air Conditioning) system specifications for the 2012-2018 BMW 340i. It includes detailed information about system components, performance metrics, and maintenance requirements. Use this guide to understand the capabilities and operational parameters of your vehicle's HVAC system. Navigate through the sections to find specific details or refer to the quick reference section for key specifications.

How to Use

To search for specific information, use the search functionality by typing keywords related to the HVAC system (e.g., 'compressor,' 'heating capacity,' or 'air filter'). The search will highlight relevant sections and subsections.

Navigate through the document by selecting sections from the table of contents. Each section contains subsections with detailed technical specifications. Use the quick reference section for a summary of key HVAC specifications.

Key Specifications

Heating Capacity

35 kW

Cooling Capacity

12,000 BTU/h

Refrigerant Type

R-1234yf

Cabin Air Filter Type

Activated Carbon

Heating Time to 22°C

5 minutes

Available Specifications

Heating System

The heating system in the 2012-2018 BMW 340i is designed to provide optimal cabin comfort during cold weather conditions. It includes a high-performance heater core, electric cooling fan, and advanced temperature control mechanisms. This section details the technical specifications and operational parameters of the heating system.

Heating System Components
  • Heater core with integrated temperature sensor
  • Electric cooling fan with variable speed control
  • Cabin air temperature sensor
  • Heater control valve with electronic actuation
  • Coolant lines with insulation
  • Blower motor with multi-speed functionality
Heating Performance
  • Maximum heating capacity: 35 kW
  • Heating time to reach 22°C (72°F) from -20°C (-4°F): 5 minutes
  • Airflow rate: 300 liters per second
  • Temperature control range: -20°C to 32°C (-4°F to 90°F)
  • Defrost mode activation time: 30 seconds

Cooling System

The cooling system in the 2012-2018 BMW 340i is engineered to maintain optimal engine and cabin temperatures during hot weather. It incorporates a high-efficiency compressor, condenser, and evaporator. This section provides detailed specifications for the cooling system components and performance metrics.

Cooling System Components
  • High-efficiency scroll compressor
  • Condenser with dual fan configuration
  • Evaporator with integrated expansion valve
  • Refrigerant lines with insulation
  • Cabin air temperature sensor
  • Electronic expansion valve
Cooling Performance
  • Maximum cooling capacity: 12,000 BTU/h
  • Refrigerant type: R-1234yf
  • Compressor speed range: 500-1500 RPM
  • Condenser fan speed range: 500-2000 RPM
  • Evaporator temperature range: 3°C to 15°C (37°F to 59°F)
  • Refrigerant pressure range: 50-150 PSI

Air Quality and Filtration

The air quality and filtration system in the 2012-2018 BMW 340i is designed to provide clean and fresh air to the cabin. It includes advanced air filters and sensors to monitor and maintain air quality. This section details the specifications for the air filtration and quality control systems.

Air Filtration Components
  • Cabin air filter with activated carbon
  • Air quality sensor with particulate matter detection
  • Automatic recirculation mode
  • Dual-zone air distribution system
  • Filter replacement interval: 15,000 miles or 24,000 km
  • HEPA filter option available

Controls and Features

The HVAC system in the 2012-2018 BMW 340i is controlled by an advanced electronic control unit with various convenience features. This section provides details on the control systems and additional features.

Control Systems
  • Electronic control unit with self-diagnostic capabilities
  • Dual-zone automatic climate control
  • Touchscreen interface with HVAC controls
  • Voice command integration
  • Remote control via BMW ConnectedDrive
  • Automatic defrost mode
Additional Features
  • Heated seats with temperature control
  • Heated steering wheel
  • Windshield defroster with timer
  • Cabin pre-conditioning (heating or cooling) via remote start
  • Air recirculation mode with automatic activation
  • Cabin air quality monitoring

Maintenance and Service

Regular maintenance is essential to ensure optimal performance of the HVAC system in the 2012-2018 BMW 340i. This section provides service intervals and recommendations for maintaining the system.

Service Intervals
  • Cabin air filter replacement: every 15,000 miles or 24,000 km
  • Refrigerant level check: every 30,000 miles or 48,000 km
  • Compressor belt inspection: every 50,000 miles or 80,000 km
  • Condenser and evaporator cleaning: every 60,000 miles or 96,000 km
  • Heater core flushing: every 100,000 miles or 160,000 km
  • System diagnostic check: every 30,000 miles or 48,000 km

Component Specifications

Overview

Type
Automatic Climate Control
Configuration
Dual-Zone Automatic Climate Control
Platform
F30
Material
Plastic and Aluminum
Location
Under Dashboard, Driver Side

Dimensions

Overall Width
12.5 in (318 mm)
Overall Height
9.8 in (250 mm)
Overall Depth
15.7 in (400 mm)
Core Width
8.5 in (216 mm)
Core Height
5.9 in (150 mm)
Airflow Rate
300 CFM (850 m3/h)
Weight
23.4 lbs (10.6 kg)
Refrigerant Capacity
28 oz (794 g)

Materials

Heat Exchanger
Aluminum
Blower Motor Housing
High-Density Polypropylene
Ducting
Polypropylene and Polyester
Condenser
Aluminum

Features

Air Quality Features
  • Activated Carbon Air Filter
  • Automatic Air Recirculation
  • Pollutant Sensor
Climate Control Features
  • Dual-Zone Temperature Control
  • Automatic Climate Control
  • Airflow Direction Control
Airflow Management
  • Variable Speed Blower Motor
  • Multi-Zone Airflow Distribution
  • Recirculation Mode
Temperature Control
  • Electronic Temperature Control
  • Heated Air Option
  • Ambient Temperature Display

Safety Features

Overheat Protection
  • Temperature Sensors
  • Thermal Cut-Off
  • Coolant Level Monitoring
Pressure Protection
  • High-Pressure Cut-Off Switch
  • Low-Pressure Sensor
  • Pressure Relief Valve
System Safety
  • Crash Sensor Integration
  • Automatic Shut-Off
  • Leak Detection

Comfort Features

Air Distribution
  • Dual-Zone Vents
  • Rear Seat Ventilation
  • Floor and Dash Vents
Filtration
  • Cabin Air Filter
  • Pollutant-Sensing Filter
  • Bacterial Filter
Noise Reduction
  • Silent Blower Operation
  • Noise-Reducing Ducting
  • Vibration Dampening

Accessories

Filtration Accessories
  • Replacement Cabin Air Filter
  • Activated Carbon Filter Kit
  • Anti-Bacterial Filter Kit
Ventilation Accessories
  • Rear Seat Ventilation Kit
  • Trunk Ventilation Duct
  • Cabin Air Quality Sensor
Control Accessories
  • Remote Climate Control
  • Touchscreen Interface
  • Voice Command Integration

Maintenance

Service interval
  • Inspect and Replace Cabin Air Filter every 15,000 miles or 24,000 km
  • Check Refrigerant Levels every 30,000 miles or 48,000 km
  • Inspect Ducts and Vents every 45,000 miles or 72,000 km
  • Clean Condenser Coils every 60,000 miles or 96,000 km
  • Replace Blower Motor Resistor every 90,000 miles or 145,000 km
Maintenance Notes
  • Use OEM or equivalent filters
  • Ensure proper refrigerant handling
  • Check for duct leaks
  • Clean condenser coils annually
  • Inspect belts and hoses

Warranty

Basic Warranty
Miles: 50,000
Years: 4
Coverage: Parts and Labor
Powertrain Warranty
Miles: 100,000
Years: 5
Coverage: HVAC Components
Corrosion Perforation Warranty
Miles: 100,000
Years: 12
Coverage: Sheet Metal
Maintenance Warranty
Miles: 50,000
Years: 4
Coverage: Maintenance Services

Production Details

Manufacturer
BMW Group
Manufacturing Process
  • Robotically Welded Components
  • Laser-Cut Ducting
  • Automated Assembly Lines
  • Quality Control Inspections
Quality Control
inspection Checklist: Leak Testing, Flow Rate Measurement, Noise Level Testing, Temperature Accuracy
Certifications: ISO 9001, IATF 16949, ISO 14001
Sustainability Practices
  • Recyclable Materials
  • Energy-Efficient Manufacturing
  • Low-VOC Paints
  • End-of-Life Recycling
Production Metrics
Units Per Day: 500
Cycle Time: 45 minutes
Defect Rate: <1%
Energy Consumption: 2.5 kWh/unit

Service Information for HVAC Service

Maintenance and service requirements specific to this component

15,000 miles
12 months
  • Inspect and Replace Cabin Air Filter
  • Check Refrigerant Levels
  • Inspect Ducts and Vents
  • Clean Blower Motor
  • Check for Leaks

Standard maintenance interval

30,000 miles
24 months
  • Inspect Condenser Coils
  • Check Blower Motor Resistor
  • Test Temperature Sensor
  • Inspect Heated Core
  • Check for Blockages

Intermediate service interval

60,000 miles
48 months
  • Replace Blower Motor Resistor
  • Clean Condenser Coils
  • Inspect and Replace Heated Core
  • Check for Refrigerant Leaks
  • Test Airflow Rate

Major service interval

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the HVAC system in a 2012-2018 BMW 340i?

The HVAC system in the 2012-2018 BMW 340i features a dual-zone automatic climate control system with rear air vents. It utilizes R-1234yf refrigerant and includes a compressor, condenser, evaporator, and expansion valve. The system is compatible with OE parts and aftermarket alternatives, ensuring optimal performance and comfort.

Q2

What maintenance is required for the HVAC system?

Regular maintenance includes replacing the cabin air filter every 15,000 miles, checking refrigerant levels annually, and inspecting hoses and belts for wear. Additionally, ensure proper ventilation by cleaning air vents and drains, and avoid using harsh chemicals that may damage components.

Q3

How do I replace the HVAC blower motor or resistor?

To replace the blower motor or resistor, first disconnect the battery. Remove the glove box and lower dashboard trim to access the blower housing. Disconnect electrical connectors and mounting screws, then remove the old component. Install the new part, ensuring proper alignment and secure fastening. Reassemble components and reconnect the battery.

Q4

Why is my HVAC system not cooling or heating properly?

Common issues include low refrigerant levels, faulty sensors, or blocked air vents. Check for refrigerant leaks, ensure all vents are unobstructed, and test the temperature sensor. If issues persist, scan for fault codes using a BMW-specific OBD-II tool and address any stored codes.

Q5

How can I optimize the HVAC system's performance?

Optimize performance by ensuring proper refrigerant levels, clean air filters, and unobstructed airflow. Use the recirculation mode to reduce external contamination and avoid extreme temperature settings. Regular maintenance and inspections will also ensure consistent heating and cooling performance.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

BMW 340i HVAC Service Manual

Coming Soon

Comprehensive guide covering HVAC system diagnostics, maintenance, and repair procedures for 2012-2018 models.

Technical Bulletin: HVAC System Update

Coming Soon

Official BMW technical bulletin addressing software updates and improvements for HVAC control units in 2012-2018 models.

BMW Parts Catalog: HVAC Components

Coming Soon

Detailed listing of OE and compatible aftermarket parts for the HVAC system, including filters, sensors, and actuators.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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