BMW 740i 2016-present

BMW 740i 2016-present HVAC Specifications

Detailed technical specifications and diagnostic information for the HVAC system in the 2016-Present BMW 740i. Includes component details, performance metrics, and maintenance guidelines.

Updated Oct 14, 2023

Overview Specifications

Comprehensive description of the HVAC specifications for the 2016-Present BMW 740i, 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 'cooling capacity', 'heating output', or 'airflow rate'. 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

Heating Output

6.5 kW at 2000 rpm

Cooling Capacity

4.2 kW at 2000 rpm

Airflow Rate

Up to 12.5 m³/min

Refrigerant Charge

550 g

Coolant Flow Rate

12 L/min

Available Specifications

Climate Control System

This section covers the advanced climate control system of the BMW 740i, including its components, functionality, and performance metrics.

Automatic Climate Control

Dual-zone automatic climate control system
Temperature range: 60°F to 90°F (15.5°C to 32°C)
Includes humidity and air quality sensors
Automatic air recirculation mode
Microfilter system with activated charcoal

Air Distribution

Multi-level air distribution system
Adjustable vents for precise airflow control
Airflow rate: Up to 12.5 m³/min
Includes footwell and windshield defrost vents
Rear passenger climate control vents

Note: The airflow rate may vary based on external temperature and system load.

Heating System

Detailed information on the heating system, including its components, performance, and technical specifications.

Heating Performance

Heating output: 6.5 kW at 2000 rpm
Rapid heating function for cold starts
Integrated auxiliary heater for diesel models
Heating element temperature: Up to 120°C
Heating time to reach optimal temperature: 5-7 minutes

Heating Components

High-efficiency heat exchanger
Electric water pump for coolant circulation
Thermostat-controlled heating system
Heater core material: Aluminum
Coolant flow rate: 12 L/min

Note: The heating system is designed to work efficiently even in extreme cold conditions.

Cooling System

This section provides detailed information on the cooling system, including its components, performance, and technical specifications.

Cooling Performance

Cooling capacity: 4.2 kW at 2000 rpm
Refrigerant type: R1234yf
Refrigerant charge: 550 g
Cooling time to reach optimal temperature: 3-5 minutes
Maximum cooling airflow: 10.5 m³/min

Cooling Components

High-efficiency condenser
Electric compressor with variable displacement
Evaporator core material: Aluminum
Coolant flow rate: 10 L/min
Integrated cooling fan with variable speed control

Note: The cooling system is optimized for energy efficiency and rapid cooling.

Air Conditioning System

Detailed information on the air conditioning system, including its components, performance, and technical specifications.

AC Performance

Cooling capacity: 5.0 kW at 2000 rpm
Refrigerant type: R1234yf
Refrigerant charge: 550 g
Cooling time to reach optimal temperature: 3-5 minutes
Maximum cooling airflow: 10.5 m³/min

AC Components

High-efficiency condenser
Electric compressor with variable displacement
Evaporator core material: Aluminum
Coolant flow rate: 10 L/min
Integrated cooling fan with variable speed control

Note: The air conditioning system is designed for rapid cooling and energy efficiency.

Search Specifications

Search by specification name, value, or description

Component Specifications

General Specifications

System Type: Automatic Climate Control with 4-Zone Temperature Control

Refrigerant Type: R1234yf

Refrigerant Capacity: 500 ± 20 g

Compressor Type: Variable Displacement Compressor

Compressor Part Number: 64119282545

Blower Motor Type: Electronically Controlled Brushless DC Motor

Temperature Control

Temperature Range: 16°C to 28°C (60.8°F to 82.4°F)

Temperature Resolution: 0.5°C (0.9°F)

Temperature Sensor Accuracy: ±0.5°C (±0.9°F)

Auxiliary Heater Type: Electric PTC Heater

Auxiliary Heater Power: 1500 W

Airflow Specifications

Blower Motor Power: 400 W

Airflow Rate Max: 1200 m³/h

Airflow Distribution

Face
Footwell
Defrost
Combined

Air Quality Sensor: Integrated PM2.5 and VOC Sensor

Recirculation Mode: Automatic and Manual

Filtration System

Filter Type: Microfilter with Activated Carbon

Filter Part Number: 64319282546

Filter Efficiency: PM2.5 Filtration Efficiency > 95%

Filter Replacement interval: Every 15,000 miles or 12 months

Filter Dimensions: 200 mm x 150 mm x 25 mm

Cooling System

Evaporator Type: Plate-Fin Aluminum Evaporator

Evaporator Part Number: 64119282547

Condenser Type: Parallel Flow Aluminum Condenser

Condenser Part Number: 64119282548

Expansion Valve Type: Thermostatic Expansion Valve

Expansion Valve Part Number: 64119282549

Heating System

Heater Core Type: Aluminum Heater Core

Heater Core Part Number: 64119282550

Coolant Flow Rate: 10 L/min

Coolant Temperature Range: 80°C to 105°C (176°F to 221°F)

Auxiliary Heater Activation Temp: Below 5°C (41°F)

Control interface

Display Type: 10.25-inch Touchscreen with HVAC Controls

Control Units

Front Control Unit
Rear Control Unit

Control Unit Part Numbers

64119282551
64119282552

Voice Control Support: Yes

Remote Climate Control: Via BMW ConnectedDrive App

Diagnostic Specifications

Diagnostic interface: OBD-II with BMW ISTA Integration

Fault Codes

P0532
P0533
P0534
B7F3
B7F4

Diagnostic Tool: BMW ISTA/D or ISTA/P

Self Diagnosis: Automatic System Check Every Ignition Cycle

Error Log Capacity: Up to 50 Fault Codes

Operational Limits

Ambient Temperature Range: -30°C to 50°C (-22°F to 122°F)

System Pressure Max: 30 bar (435 psi)

Compressor Speed Range: 800 to 8000 rpm

Blower Motor Speed Range: 0 to 100%

Coolant Pressure Max: 2.5 bar (36 psi)

Maintenance Specifications

Refrigerant Recharge interval: Every 2 years or as needed

System Leak Test interval: Every 2 years or after repairs

Compressor Oil Type: PAG Oil

Compressor Oil Capacity: 150 ± 10 ml

Coolant Type: BMW Antifreeze/Coolant (G48)

Coolant Mix Ratio: 50:50 with distilled water

Service Information Service

Detailed service requirements and schedules for the HVAC system

15,000

Replace Microfilter
Check Refrigerant Level
Inspect HVAC System for Leaks

Use only BMW-approved refrigerant and filters

30,000

Recharge Refrigerant
Inspect Compressor and Belts
Check Blower Motor Operation

Perform system pressure test during refrigerant recharge

60,000

Flush and Replace Coolant
Inspect Heater Core and Hoses
Check Auxiliary Heater Function

Follow BMW coolant specifications and mixing ratios

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the refrigerant type and capacity for the 2016-Present BMW 740i HVAC system?

The HVAC system in the 2016-Present BMW 740i uses R-1234yf refrigerant. The system capacity is approximately 525 grams (± 25 grams). Always refer to the vehicle's under-hood label for exact specifications.

How do I reset the HVAC system after replacing the cabin air filter?

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 flashes. Release the button, and the system will reset. This ensures proper airflow and system calibration.

What is the recommended maintenance interval for the HVAC system?

BMW recommends inspecting the HVAC system every 15,000 miles or 12 months, whichever comes first. This includes checking refrigerant levels, cabin air filter replacement, and inspecting the compressor and condenser for leaks or damage.

How does the automatic climate control system work in the 2016-Present BMW 740i?

The automatic climate control system uses multiple sensors, including interior temperature, exterior temperature, and solar sensors, to maintain the desired cabin temperature. The system adjusts fan speed, air distribution, and temperature automatically based on these inputs.

What are the common symptoms of a failing HVAC blower motor?

Common symptoms include unusual noises (whining or grinding), reduced airflow, or complete failure of the blower motor. If these symptoms occur, inspect the blower motor resistor and wiring harness for faults before replacing the motor.

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 HVAC System Overview

Coming Soon

Detailed technical guide on the HVAC system components, operation, and maintenance for the 2016-Present BMW 740i.

Refrigerant Handling and Safety

Coming Soon

Learn about proper handling, storage, and safety precautions for R-1234yf refrigerant used in BMW vehicles.

Cabin Air Filter Replacement Guide

Coming Soon

Step-by-step instructions for replacing the cabin air filter in the 2016-Present BMW 740i, including resetting the HVAC system.

Diagnosing HVAC System Faults

Coming Soon

Comprehensive guide to diagnosing common HVAC system issues, including error codes and troubleshooting steps.

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