BMW M4 2014-2020 HVAC Specifications
Detailed technical specifications for the HVAC system in the 2014-2020 BMW M4, including component details, refrigerant requirements, and diagnostic procedures.
Overview Specifications
Comprehensive description of the HVAC specifications for the 2014-2020 BMW M4, including key features, measurements, and technical details. This section covers the heating, ventilation, and air conditioning system, focusing on its components, performance, and maintenance requirements.
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 best results.
Navigate through the HVAC documentation sections using the table of contents. Each major section is divided into subsections for detailed information on specific components and functionalities.
Key Specifications
Refrigerant Capacity
500 ± 20 g
Heater Core Output
12,000 BTU/h
Blower Motor Power
200 W
Airflow Capacity
600 m³/h
Refrigerant Type
R-1234yf
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.
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
- High-performance blower motor with variable speed control
- Electronically controlled refrigerant compressor
- Integrated cabin air filter with activated charcoal
- Heater core with a capacity of 12,000 BTU/h
System Integration
- Fully integrated with iDrive infotainment system
- Automatic temperature control with 0.5°C precision
- Ambient air quality sensor for automatic recirculation
- Solar sensor for adaptive climate control
- Note: System requires periodic calibration for optimal performance
Note: The HVAC system is designed to work seamlessly with the vehicle's electronics, ensuring precise temperature control and energy efficiency.
Refrigerant System
This section details the refrigerant system, including specifications, capacity, and maintenance requirements.
Refrigerant System
This section details the refrigerant system, including specifications, capacity, and maintenance requirements.
Refrigerant Specifications
- Refrigerant type: R-1234yf
- Total system capacity: 500 ± 20 g
- Operating pressure: 15-30 bar (high side)
- Refrigerant oil type: PAG 46
- Note: Use only BMW-approved refrigerant for servicing
Refrigerant System Components
- High-efficiency condenser with 0.8 m² surface area
- Evaporator core with 0.6 m² surface area
- Thermal expansion valve with electronic control
- Refrigerant lines with integrated pressure sensors
Heating and Ventilation
This section covers the heating and ventilation components, including their specifications and performance metrics.
Heating and Ventilation
This section covers the heating and ventilation components, including their specifications and performance metrics.
Heating System
- Heater core output: 12,000 BTU/h
- Coolant flow rate: 10 L/min
- Electric auxiliary heater with 1.5 kW capacity
- Note: Auxiliary heater activates below 5°C ambient temperature
Ventilation System
- Dual-zone air distribution with 8 adjustable vents
- Blower motor power: 200 W
- Airflow capacity: 600 m³/h
- Cabin air filter replacement interval: 15,000 miles
Maintenance and Diagnostics
This section provides guidelines for maintaining and diagnosing the HVAC system, including common issues and troubleshooting steps.
Maintenance and Diagnostics
This section provides guidelines for maintaining and diagnosing the HVAC system, including common issues and troubleshooting steps.
Maintenance Requirements
- Refrigerant level check every 2 years
- Cabin air filter replacement every 15,000 miles
- Blower motor inspection every 30,000 miles
- System pressure test during major service intervals
Diagnostics and Troubleshooting
- Integrated fault code reader for HVAC system
- Common issues: refrigerant leaks, blower motor failure
- Diagnostic tool required for system calibration
- Note: Always refer to BMW service manuals for detailed diagnostics
Note: Regular maintenance and diagnostics are essential for optimal HVAC performance and longevity.
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
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
- 150 ± 10 ml
Blower Motor
- Power Rating
- 200 W
- Voltage
- 12 V
- Airflow Rate
- Up to 12 m³/min
- Part Number
- 64119264275
- Operational Temperature Range
- -40°C to 85°C
Heating System
- Heater Core Material
- Aluminum
- Heater Core Dimensions
- 300 mm x 200 mm x 50 mm
- Max Heater Output
- 6 kW
- Coolant Flow Rate
- 10 L/min
- Part Number
- 64119264276
Air Conditioning
- Evaporator Core Material
- Aluminum
- Evaporator Core Dimensions
- 250 mm x 150 mm x 40 mm
- Cooling Capacity
- 4.5 kW
- Expansion Valve Type
- Thermostatic
- Part Number
- 64119264277
Air Distribution
- Duct Material
- Plastic
- Duct Diameter
- 80 mm
- Airflow Control
- Electronically Controlled Dampers
- Part Number
- 64119264278
- Max Airflow Pressure
- 2.5 kPa
Filters
- Cabin Air Filter Type
- Activated Carbon
- Cabin Air Filter Dimensions
- 200 mm x 150 mm x 25 mm
- Cabin Air Filter Part Number
- 64119264279
- Replacement interval
- 15,000 miles or 12 months
- Efficiency Rating
- 95% at 0.3 microns
Sensors
- interior Temperature Sensor
- Type: NTC ThermistorOperational Range: -40°C to 85°CAccuracy: ±0.5°CPart Number: 64119264280
- Sunlight Sensor
- Type: PhotodiodeOperational Range: 0 to 100,000 luxAccuracy: ±5%Part Number: 64119264281
- Humidity Sensor
- Type: CapacitiveOperational Range: 0 to 100% RHAccuracy: ±3% RHPart Number: 64119264282
Control Unit
- Type
- Digital Microprocessor
- Operational Voltage
- 12 V
- Operational Temperature Range
- -40°C to 85°C
- Part Number
- 64119264283
- Software Version
- V2.3.1
Safety Features
- High Pressure Cutoff
- 3.5 MPa
- Low Pressure Cutoff
- 0.2 MPa
- Overheat Protection
- 95°C
- Emergency Shutdown
- Automatic in case of system failure
Diagnostics
- Fault Codes
-
- B1234 - Blower Motor Circuit Malfunction
- B1235 - Interior Temperature Sensor Fault
- B1236 - Evaporator Temperature Sensor Fault
- Diagnostic Tool
- BMW ISTA
- Diagnostic interface
- OBD-II
- Self Diagnosis
- Yes
Service Information Service
Detailed service requirements and schedules for the HVAC system
- Inspect and replace cabin air filter
- Check refrigerant level and pressure
- Inspect blower motor and ducts
Ensure all connections are secure and free of debris
- Inspect and clean evaporator core
- Check heater core for leaks
- Inspect and test all sensors
Use only BMW-approved refrigerant and lubricants
- Replace refrigerant
- Inspect and test compressor
- Check and recalibrate control unit
Perform a full system diagnostic using BMW ISTA
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the refrigerant type and capacity for the 2014-2020 BMW M4 HVAC system?
What is the refrigerant type and capacity for the 2014-2020 BMW M4 HVAC system?
The HVAC system in the 2014-2020 BMW M4 uses R-134a refrigerant. The total system capacity is approximately 525 grams (18.5 ounces). Always refer to the vehicle's service manual for precise specifications.
Q2 How do I reset the HVAC system in my BMW M4?
How do I reset the HVAC system in my BMW M4?
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 lights on the HVAC control panel flash. Release the button, and the system will reset. This procedure may vary slightly depending on the model year.
Q3 What is the recommended interval for replacing the cabin air filter in the BMW M4?
What is the recommended interval for replacing the cabin air filter in the BMW M4?
The cabin air filter should be replaced every 15,000 to 30,000 miles or as specified in the vehicle's maintenance schedule. In dusty or polluted environments, more frequent replacement may be necessary.
Q4 How does the automatic climate control system work in the BMW M4?
How does the automatic climate control system work in the BMW M4?
The automatic climate control system in the BMW M4 uses sensors to monitor cabin temperature, humidity, and sunlight. It adjusts fan speed, air distribution, and temperature to maintain the desired comfort level. The system also includes a microfilter to improve air quality.
Q5 What are the common symptoms of a failing HVAC blower motor in the BMW M4?
What are the common symptoms of a failing HVAC blower motor in the BMW M4?
Common symptoms include reduced airflow, unusual noises (such as squeaking or grinding), and complete failure of the blower motor. If these symptoms occur, inspect the blower motor and its resistor for faults.
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 M4 HVAC System Service Manual
Coming SoonOfficial service manual for the 2014-2020 BMW M4 HVAC system, including detailed repair and maintenance procedures.
HVAC Refrigerant Handling Guide
Coming SoonComprehensive guide on safely handling and recharging R-134a refrigerant in BMW vehicles.
Cabin Air Filter Replacement Tutorial
Coming SoonStep-by-step instructions for replacing the cabin air filter in the BMW M4, including tools required and safety tips.
BMW M4 Climate Control Diagnostics
Coming SoonDiagnostic procedures for troubleshooting common issues with the automatic climate control system in the BMW M4.
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
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
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.