BMW 428i 2014-2016

BMW 428i 2014-2016 HVAC Specifications

Detailed technical specifications and operational guide for the HVAC system in the 2014-2016 BMW 428i. Includes component details, refrigerant specifications, control mechanisms, and diagnostic procedures.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the HVAC specifications for the 2014-2016 BMW 428I, including key features, measurements, and technical details. This section provides detailed insights into the heating, ventilation, and air conditioning system, ensuring optimal performance and comfort.

How to Use

Use the search function to locate specific HVAC specifications by entering keywords such as 'blower motor', 'refrigerant capacity', or 'temperature control'. Use exact terms for precise results.

Navigate through the HVAC documentation sections using the table of contents. Each major section is divided into subsections for easy access to specific technical details.

Key Specifications

Refrigerant Capacity

525 ± 25 g

Maximum Cooling Capacity

5.5 kW

Heater Core Heat Output

6.0 kW

Blower Motor Power

200 W

Airflow Capacity

450 m³/h

Available Specifications

HVAC System Overview

This section provides an overview of the HVAC system, including its components, functionality, and integration with the vehicle's electronics.

System Components

Dual-zone automatic climate control system
Electrically driven compressor for efficient cooling
High-performance blower motor with variable speed control
Integrated cabin air filter for improved air quality
Automatic air recirculation mode for optimal temperature management

System Integration

Seamless integration with iDrive system for user control
Automatic temperature adjustment based on external conditions
Integration with vehicle sensors for humidity and air quality monitoring
Compatibility with BMW ConnectedDrive for remote climate control

Note: The HVAC system is designed to work in harmony with the vehicle's electronics, ensuring a smooth and responsive user experience.

Refrigerant and Cooling Specifications

This section details the refrigerant type, capacity, and cooling performance specifications for the HVAC system.

Refrigerant Type and Capacity

Refrigerant type: R-134a
Total refrigerant capacity: 525 ± 25 g
Refrigerant oil type: PAG (Polyalkylene Glycol)
Refrigerant oil capacity: 120 ± 10 ml

Cooling Performance

Maximum cooling capacity: 5.5 kW
Evaporator temperature range: 2°C to 10°C
Compressor displacement: 120 cc
Condenser pressure range: 12 to 18 bar

Note: Ensure proper refrigerant levels and system pressure for optimal cooling performance.

Heating and Ventilation Specifications

This section covers the heating and ventilation components, including the heater core, blower motor, and air distribution system.

Heater Core Specifications

Heater core material: Aluminum
Heater core dimensions: 200 mm x 150 mm x 30 mm
Maximum heat output: 6.0 kW
Coolant flow rate: 8 L/min

Blower Motor and Air Distribution

Blower motor power rating: 200 W
Airflow capacity: 450 m³/h
Variable air distribution with 4 modes: Face, Foot, Defrost, and Auto
Dual-zone temperature control with ±0.5°C accuracy

Note: The blower motor is designed for quiet operation and efficient airflow distribution.

Control and Sensors

This section provides details on the HVAC control system, including sensors, actuators, and user interface components.

Temperature and Humidity Sensors

Interior temperature sensor accuracy: ±0.5°C
Exterior temperature sensor range: -40°C to 85°C
Humidity sensor range: 0% to 100% RH
Solar sensor for automatic climate adjustment

Actuators and Control Modules

Stepper motor actuators for air flap control
Integrated HVAC control module with CAN bus communication
Automatic defrost and demist functions
User interface via iDrive controller and touchscreen

Note: The HVAC control system is designed for precise and reliable operation, ensuring passenger comfort in all conditions.

Search Specifications

Search by specification name, value, or description

Component Specifications

General Specifications

System Type: Automatic Climate Control

Refrigerant Type: R134a

Refrigerant Capacity: 525 ± 25 g

Compressor Type: Variable Displacement

Compressor Oil Type: PAG oil

Compressor Oil Capacity: 120 ± 10 ml

Blower Motor

Power Rating: 200 W

Voltage: 12 V

Airflow Capacity: Up to 600 m³/h

Part Number: 64 11 9 250 123

Heating System

Heater Core Material: Aluminum

Heater Core Dimensions: 300 x 200 x 50 mm

Max Heater Output: 6.5 kW

Coolant Flow Rate: 10 L/min

Part Number: 64 11 9 250 456

Cooling System

Evaporator Material: Aluminum

Evaporator Dimensions: 250 x 180 x 40 mm

Cooling Capacity: 4.2 kW

Condenser Material: Aluminum

Condenser Dimensions: 400 x 300 x 20 mm

Part Number: 64 11 9 250 789

Air Distribution

Vent Types

Dashboard vents
Floor vents
Defrost vents

Vent Material: ABS plastic

Airflow Direction Control: Automatic and manual

Part Number: 64 11 9 250 321

Filters

Cabin Air Filter Type: Combination filter (particulate and activated carbon)

Cabin Air Filter Dimensions: 200 x 150 x 25 mm

Replacement interval: Every 15,000 miles or 12 months

Part Number: 64 31 9 250 654

Control Unit

Control Type: Digital with touchscreen interface

Temperature Range: 16°C to 32°C

Humidity Control: Automatic

Part Number: 64 11 9 250 987

Sensors

Ambient Temperature Sensor Range: -40°C to 85°C

interior Temperature Sensor Range: 0°C to 50°C

Sunlight Sensor Type: Photodiode

Part Number: 64 11 9 250 159

Operational Parameters

Operating Temperature Range: -30°C to 50°C

Max System Pressure: 30 bar

Min System Pressure: 2 bar

Compressor Speed Range: 800 to 6000 rpm

Diagnostics

Diagnostic Tool: BMW ISTA

Fault Codes

P0532
P0533
P0534

Diagnostic interface: OBD-II

Self Diagnosis Capability: Yes

Service Information Service

Detailed service requirements and schedules for the HVAC system

15,000

Inspect and replace cabin air filter
Check refrigerant level and pressure
Inspect blower motor and vents

Use only BMW-approved refrigerant and lubricants

30,000

Inspect and clean evaporator and condenser
Check compressor operation
Inspect all hoses and connections

Perform a full system diagnostic using BMW ISTA

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the refrigerant type and capacity for the 2014-2016 BMW 428i HVAC system?

The HVAC system in the 2014-2016 BMW 428i uses R134a refrigerant. The total system capacity is approximately 525 grams (18.5 ounces). Always ensure the refrigerant is handled by a certified technician to avoid system damage or personal injury.

How do I reset the HVAC system in my BMW 428i?

To reset the HVAC system, turn the ignition to the ON position without starting the engine. Press and hold the front defrost button for 10 seconds until the LED indicators flash. Release the button, and the system will reset. This procedure recalibrates the HVAC actuators and ensures proper operation.

What is the recommended cabin air filter replacement interval for the BMW 428i?

The cabin air filter should be replaced every 15,000 to 20,000 miles or annually, whichever comes first. In dusty or polluted environments, more frequent replacement may be necessary. A clogged filter can reduce HVAC efficiency and airflow.

What are the common symptoms of a failing HVAC blower motor in the BMW 428i?

Common symptoms include reduced airflow, unusual noises (such as squealing or grinding), intermittent operation, or complete failure of the blower motor. These issues may indicate a failing motor, resistor, or wiring problem. Professional diagnosis is recommended.

How does the automatic climate control system work in the BMW 428i?

The automatic climate control system uses sensors to monitor cabin temperature, sunlight intensity, and humidity. It adjusts fan speed, air distribution, and temperature settings automatically to maintain the desired comfort level. The system also includes a microfilter to improve air quality.

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 428i HVAC System Service Manual

Coming Soon

Official service manual for the 2014-2016 BMW 428i HVAC system, including detailed repair procedures, component locations, and troubleshooting guides.

Refrigerant Handling and Safety Guidelines

Coming Soon

Comprehensive guide on safe handling, storage, and disposal of R134a refrigerant, including EPA regulations and safety precautions.

Cabin Air Filter Replacement Tutorial

Coming Soon

Step-by-step video tutorial on replacing the cabin air filter in the 2014-2016 BMW 428i, including tools required and common mistakes to avoid.

BMW HVAC System Troubleshooting Guide

Coming Soon

Detailed troubleshooting guide for common HVAC issues in BMW vehicles, including diagnostic codes, actuator calibration, and blower motor testing.

About the Author

Expert automotive knowledge and experience

ASE

Alan Montanye

Automotive Technical Specialist

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

Facebook Contact

15+ Years

Experience

500+ Guides

Guides

50+ Makes

Vehicles

1000+ Solutions

Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

ASE Master Technician Certification
Advanced Diagnostic Specialist
Hybrid/Electric Vehicle Systems
Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information

The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.

Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information

All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
Vehicle specifications and procedures may vary by model year, trim level, and region.
Always follow the manufacturer's recommended procedures and safety precautions.
Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
If you're unsure about any procedure, consult a qualified professional mechanic.

Intellectual Property

All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.