Infiniti FX35 2003-2008 HVAC Specifications
Infiniti FX35 2003-2008

Infiniti FX35 2003-2008 HVAC Specifications

Explore detailed HVAC specifications for the 2003-2008 Infiniti FX35, covering air conditioning, heating, blower motor, and climate control systems. Ideal for maintenance, repairs, and upgrades.

Updated

Overview Specifications

This document provides detailed HVAC specifications for the 2003-2008 Infiniti FX35. It covers system components, controls, maintenance tips, and troubleshooting guidance. Use this resource to understand the HVAC system's functionality, locate specific information, and ensure optimal performance. The content is organized into sections for easy navigation and includes a quick reference table for key specifications.

How to Use

Use the search function to find specific terms or components within the document. Enter keywords like 'blower motor' or 'climate control' to quickly locate relevant information.

Browse through the major sections and subsections to explore detailed HVAC specifications. Use the table of contents for a structured overview of the topics covered.

Key Specifications

Refrigerant Type

R134a

Blower Motor Voltage

12V DC

Cabin Filter Replacement

15,000 miles

Compressor Clutch Engagement

Electromagnetic

Air Distribution Modes

Face, Foot, Defrost

Available Specifications

System Components

This section outlines the main components of the HVAC system in the 2003-2008 Infiniti FX35, including the blower motor, compressor, condenser, and evaporator. Each component's role and technical details are explained to help you understand the system's operation.

Blower Motor
  • Located in the HVAC housing unit
  • Controls airflow speed
  • Operates on a 12V DC power supply
  • Replaceable as a standalone unit
  • Common failure due to worn-out bearings
  • Check fuse and relay for troubleshooting
Compressor
  • Driven by the engine serpentine belt
  • Pressurizes refrigerant for cooling
  • Includes a clutch for engagement
  • Check for leaks or abnormal noise
  • Requires proper refrigerant levels
  • Replace if internal seals fail

Climate Controls

This section details the climate control system, including the automatic temperature control, fan speed settings, and air distribution modes. Learn how to operate and maintain these controls for optimal comfort.

Automatic Temperature Control
  • Maintains set cabin temperature
  • Uses interior and exterior sensors
  • Adjusts fan speed and air distribution
  • Can be overridden manually
  • Check for sensor malfunctions
  • Reset system if unresponsive
Air Distribution Modes
  • Includes face, foot, and defrost modes
  • Controlled by air mix doors
  • Actuators may require lubrication
  • Check for stuck or noisy actuators
  • Replace actuators if faulty
  • Ensure proper duct alignment

Maintenance Tips

This section provides practical tips for maintaining the HVAC system, including filter replacement, refrigerant checks, and system diagnostics. Regular maintenance ensures efficient operation and longevity.

Cabin Air Filter
  • Replace every 15,000 miles or annually
  • Located behind the glove compartment
  • Improves air quality and airflow
  • Check for debris or clogging
  • Use OEM or high-quality replacements
  • Follow manufacturer instructions
Refrigerant Check
  • Use R134a refrigerant
  • Check levels during routine maintenance
  • Look for signs of leaks
  • Recharge if system performance drops
  • Use a manifold gauge set
  • Avoid overcharging

Component Specifications

Overview

Type
Automatic Climate Control
Configuration
Dual-Zone
Platform
FX35 HVAC System
Material
High-Density Plastic and Aluminum
Location
Dashboard and Engine Compartment

Dimensions

Compressor Length
7.5 inches (19.05 cm)
Compressor Width
5 inches (12.7 cm)
Compressor Height
6 inches (15.24 cm)
Condenser Length
24 inches (60.96 cm)
Condenser Width
12 inches (30.48 cm)
Evaporator Length
18 inches (45.72 cm)
Evaporator Width
10 inches (25.4 cm)

Materials

Compressor
Aluminum Alloy
Condenser
Aluminum Fins with Copper Tubing
Evaporator
Aluminum
Hvac Lines
Rubber with Aluminum Reinforcement

Features

Temperature Control
  • Automatic Temperature Adjustment
  • Dual-Zone Control
  • Microprocessor-Based Control
  • Sunlight Sensor Compensation
Air Flow
  • Multi-Stage Blower
  • Adjustable Airflow Speed
  • Directional Air Vents
  • Recirculation Mode
Filtration
  • Cabin Air Filter
  • Dust and Pollen Filter
  • Activated Carbon Filter
Defrost
  • Front Windshield Defrost
  • Rear Window Defrost
  • Side Mirror Defrost
Display
  • LCD Temperature Display
  • Control Panel Illumination
  • Auto Mode Indicator

Safety Features

System Protection
  • Overheat Protection
  • High-Pressure Cutoff Switch
  • Low Refrigerant Protection
Air Quality
  • Cabin Air Quality Sensor
  • Automatic Recirculation

Comfort Features

Temperature Settings
  • Precise Temperature Control
  • Memory Settings
  • Auto Mode
Air Distribution
  • Adjustable Vents
  • Footwell Airflow
  • Dashboard Vents
Noise Reduction
  • Quiet Blower Operation
  • Sound Dampening Materials
  • Low Vibration Design

Accessories

Filters
  • Cabin Air Filter
  • Activated Carbon Filter
  • HEPA Filter
Controls
  • Remote Start HVAC Control
  • Steering Wheel Controls
  • Touchscreen Controls
Maintenance
  • Refrigerant Recharge Kit
  • System Flush Kit
  • Leak Detection Kit

Maintenance

Service interval
Every 12 months or 15,000 miles
Service Items
  • Check Refrigerant Levels
  • Inspect Compressor Belt
  • Replace Cabin Air Filter
  • Clean Condenser
  • Check HVAC Lines for Leaks
Maintenance Notes
Use only R134a refrigerant, ensure proper system pressure

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Parts and Labor
Powertrain
Miles: 60,000
Years: 5
Coverage: Compressor and Condenser
Corrosion
Miles: Unlimited
Years: 7
Coverage: HVAC System Components
Emissions
Miles: 80,000
Years: 8
Coverage: Refrigerant System

Production Details

Manufacturer
Infiniti
Manufacturing Process
  • Precision Casting
  • CNC Machining
  • Automated Assembly
Quality Control
Testing: Pressure Testing, Leak Testing, Performance Testing
Standards: ISO 9001, ISO 14001
Sustainability Practices
  • Recyclable Materials
  • Low-Emission Manufacturing
  • Energy-Efficient Production
Production Metrics
Annual Output: 500,000 Units
Defect Rate: 0.01%
Energy Usage: 2.5 kWh per Unit

Service Information for HVAC Service

Maintenance and service requirements specific to the HVAC system

15,000
12
  • Inspect HVAC System for Leaks
  • Check Refrigerant Levels
  • Replace Cabin Air Filter
  • Clean Condenser Coils
  • Test Blower Motor Operation

Ensure proper refrigerant type and pressure

30,000
24
  • Check Compressor Belt Tension
  • Inspect HVAC Lines for Wear
  • Test Temperature Sensors
  • Clean Evaporator Coils
  • Verify System Pressure

Use OEM parts for replacements

60,000
48
  • Replace Compressor Belt
  • Flush HVAC System
  • Inspect and Replace HVAC Lines if Needed
  • Test Compressor Operation
  • Verify System Efficiency

Major service may require specialized tools

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Is the HVAC system compatible with aftermarket parts for the 2003-2008 Infiniti FX35?

The HVAC system in the 2003-2008 Infiniti FX35 is designed to work seamlessly with OEM parts. While some aftermarket components may be compatible, it is recommended to use OEM parts to ensure optimal performance and avoid potential issues. Always verify compatibility with the manufacturer or consult a professional before installation.

Q2

What are the maintenance requirements for the HVAC system in the 2003-2008 Infiniti FX35?

Regular maintenance for the HVAC system includes replacing the cabin air filter every 15,000 to 30,000 miles, checking refrigerant levels, and inspecting the compressor and blower motor. It is also important to clean the evaporator and condenser coils annually to maintain efficiency. Consult the owner’s manual for a detailed maintenance schedule.

Q3

How do I replace the cabin air filter in the 2003-2008 Infiniti FX35?

To replace the cabin air filter, locate the filter housing behind the glove compartment. Open the glove compartment and remove the screws or clips securing it. Pull out the old filter and insert the new one, ensuring it is oriented correctly. Reassemble the glove compartment. This process typically takes 10-15 minutes and requires no special tools.

Q4

What should I do if the HVAC system in my 2003-2008 Infiniti FX35 is not cooling properly?

If the HVAC system is not cooling, first check the refrigerant levels and recharge if necessary. Inspect the compressor for proper operation and ensure the condenser and evaporator coils are clean. If the issue persists, it may be due to a faulty thermostat, blower motor, or electrical issue. Consult a professional for further diagnosis.

Q5

How can I optimize the performance of the HVAC system in my 2003-2008 Infiniti FX35?

To optimize HVAC performance, ensure regular maintenance, including replacing the cabin air filter and cleaning the coils. Use the recirculation mode to cool the cabin faster and reduce strain on the system. Park in shaded areas to minimize heat buildup. Regularly check and maintain proper refrigerant levels for efficient cooling.

Factory Service Resources

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

Infiniti FX35 Service Manual

Coming Soon

Comprehensive guide covering all aspects of vehicle maintenance, including HVAC system service procedures and troubleshooting.

HVAC System Technical Bulletin

Coming Soon

Latest updates and technical service bulletins for the HVAC system in the 2003-2008 Infiniti FX35.

Infiniti FX35 Parts Catalog

Coming Soon

Detailed catalog of OEM parts for the 2003-2008 Infiniti FX35, including HVAC components and accessories.

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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