BMW M3 2015-2020 HVAC Specifications
Detailed technical specifications and operational guide for the HVAC system in the 2015-2020 BMW M3. Includes component details, refrigerant specifications, control mechanisms, and diagnostic procedures.
Overview Specifications
Comprehensive description of the HVAC specifications for the 2015-2020 BMW M3, 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 detailed technical information.
Key Specifications
Refrigerant Type
R-1234yf
Cooling Capacity
6,000 BTU/h
Heating Output
5.5 kW
Airflow Capacity
450 CFM
Filter Efficiency
99.7% for PM2.5
Available Specifications
Climate Control System
Details about the automatic climate control system, including its components, functionality, and technical specifications.
Climate Control System
Details about the automatic climate control system, including its components, functionality, and technical specifications.
Automatic Temperature Control
- Dual-zone automatic climate control system
- Temperature range: 60°F to 90°F (15.5°C to 32.2°C)
- Precision control with 0.5°F (0.3°C) increments
- Integrated humidity and air quality sensors
Air Distribution System
- Multi-level air vents with adjustable flow direction
- Airflow capacity: 450 CFM (cubic feet per minute)
- Automatic recirculation mode for improved air quality
- Dual blower motors for independent zone control
Note: The air distribution system is designed to minimize noise while maximizing airflow efficiency.
Heating System
Technical specifications and details about the heating components, including the heater core and control mechanisms.
Heating System
Technical specifications and details about the heating components, including the heater core and control mechanisms.
Heater Core Specifications
- Heater core material: Aluminum
- Heat output: 5.5 kW at 90°C coolant temperature
- Coolant flow rate: 12 L/min (liters per minute)
- Integrated thermostat for precise temperature regulation
Heating Performance
- Time to reach 68°F (20°C) from cold start: 5 minutes
- Maximum cabin temperature: 104°F (40°C)
- Heating efficiency: 92%
- Electric auxiliary heater for faster warm-up
Air Conditioning System
Detailed information about the air conditioning system, including refrigerant type, compressor specifications, and cooling performance.
Air Conditioning System
Detailed information about the air conditioning system, including refrigerant type, compressor specifications, and cooling performance.
Refrigerant and Compressor
- Refrigerant type: R-1234yf
- Refrigerant capacity: 500 g (grams)
- Compressor type: Variable displacement
- Compressor power consumption: 400 W
Cooling Performance
- Cooling capacity: 6,000 BTU/h
- Time to reach 72°F (22°C) from 104°F (40°C): 10 minutes
- Evaporator temperature range: 35°F to 50°F (1.7°C to 10°C)
- Integrated condenser fan for improved heat dissipation
Note: The air conditioning system is optimized for low energy consumption and high cooling efficiency.
Ventilation and Air Quality
Information about the ventilation system, air filters, and air quality management features.
Ventilation and Air Quality
Information about the ventilation system, air filters, and air quality management features.
Air Filtration System
- Dual-layer cabin air filter with activated carbon
- Filter replacement interval: 15,000 miles or 12 months
- Particle filtration efficiency: 99.7% for PM2.5
- Integrated ionizer for air purification
Ventilation Performance
- Air exchange rate: 30 m³/h (cubic meters per hour)
- Noise level at maximum airflow: 55 dB
- Automatic defogging system for windshield
- Rear seat ventilation ducts for passenger comfort
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Component Specifications
General Specifications
- System Type
- Automatic Climate Control
- Refrigerant Type
- R-1234yf
- Refrigerant Capacity
- 500 ± 20 g
- Compressor Type
- Variable Displacement
- Blower Motor Power
- 200 W
- Airflow Capacity
- 1200 m³/h
Temperature Control
- Temperature Range
- 16°C to 32°C
- Temperature Resolution
- 0.5°C
- Sensor Accuracy
- ±0.5°C
- Auto Mode Response Time
- 5-10 minutes
Air Distribution
- Vent Modes
-
- Face
- Foot
- Defrost
- Auto
- Airflow Direction Adjustment
- 8-way
- Recirculation Mode
- Automatic and Manual
- Air Quality Sensor
- Integrated
Heating System
- Heater Core Type
- Aluminum
- Heater Core Capacity
- 5.5 kW
- Coolant Flow Rate
- 12 L/min
- Auxiliary Heater
- Optional PTC Heater
Cooling System
- Evaporator Type
- Plate and Fin
- Evaporator Capacity
- 3.5 kW
- Condenser Type
- Parallel Flow
- Condenser Capacity
- 4.2 kW
- Expansion Valve Type
- Thermostatic
Filters
- Cabin Filter Type
- Combination Particle and Activated Carbon
- Cabin Filter Part Number
- 64 31 9 388 440
- Replacement interval
- 15,000 miles or 12 months
- Filter Efficiency
- 95% for particles > 0.3 µm
Electrical Specifications
- System Voltage
- 12 V DC
- Compressor Power Consumption
- 400 W
- Blower Motor Current
- 16.7 A
- Fuse Rating
- 40 A
Diagnostics
- Fault Codes
-
- IHKA-1
- IHKA-2
- IHKA-3
- Diagnostic interface
- OBD-II
- Self Diagnosis
- Integrated
- Error Code Storage
- Up to 20 codes
Maintenance
- Refrigerant Recharge interval
- Every 2 years or 24,000 miles
- System Pressure Check
- Annually
- Lubricant Type
- PAG Oil
- Lubricant Quantity
- 150 ± 10 ml
Safety
- High Pressure Cutoff
- 30 bar
- Low Pressure Cutoff
- 1.5 bar
- Overheat Protection
- 120°C
- Emergency Shutdown
- Automatic
Service Information Service
Detailed service requirements and schedules for the HVAC system
- Inspect and replace cabin air filter
- Check refrigerant levels
- Inspect compressor and belts
Ensure all connections are secure and free of leaks
- Recharge refrigerant
- Inspect evaporator and condenser
- Check electrical connections
Use only manufacturer-approved refrigerant
- Replace compressor oil
- Inspect and clean blower motor
- Check all sensors and actuators
Perform a full system diagnostic
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the refrigerant type and capacity for the 2015-2020 BMW M3 HVAC system?
What is the refrigerant type and capacity for the 2015-2020 BMW M3 HVAC system?
The 2015-2020 BMW M3 HVAC system uses R134a 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 a 2015-2020 BMW M3?
How do I reset the HVAC system in a 2015-2020 BMW M3?
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 display flashes. Release the button, and the system will reset. This procedure recalibrates the HVAC actuators.
Q3 What is the recommended cabin air filter replacement interval for the BMW M3?
What is the recommended cabin air filter replacement interval for the BMW M3?
BMW recommends replacing the cabin air filter every 15,000 to 20,000 miles or annually, whichever comes first. However, in dusty or polluted environments, more frequent replacement may be necessary.
Q4 How does the automatic climate control system work in the BMW M3?
How does the automatic climate control system work in the BMW M3?
The automatic climate control system in the BMW M3 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.
Q5 What are the common symptoms of a failing HVAC blower motor in the BMW M3?
What are the common symptoms of a failing HVAC blower motor in the BMW M3?
Common symptoms include reduced airflow, unusual noises (such as squeaking or grinding), intermittent operation, or complete failure of the blower motor. These issues may indicate a faulty motor, resistor, or wiring problem.
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 M3 HVAC System Service Manual
Coming SoonOfficial BMW service manual detailing HVAC system maintenance, troubleshooting, and repair procedures.
HVAC Refrigerant Charging Guide
Coming SoonStep-by-step guide for safely charging the R134a refrigerant in the BMW M3 HVAC system.
Cabin Air Filter Replacement Tutorial
Coming SoonVideo tutorial demonstrating the proper procedure for replacing the cabin air filter in the BMW M3.
BMW HVAC System Diagnostics
Coming SoonComprehensive guide to diagnosing common HVAC issues in the BMW M3, including error codes and solutions.
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Technical Information
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