Infiniti FX45 2003-2008 Electrical Specifications
Explore the detailed electrical specifications for the 2003-2008 Infiniti FX45, including battery, alternator, fuse box, and wiring diagrams. Ideal for maintenance, repairs, and upgrades.
Overview Specifications
This document provides detailed electrical specifications for the 2003-2008 Infiniti FX45. It is designed to assist technicians, enthusiasts, and owners in understanding the vehicle's electrical systems, including the battery, alternator, wiring, and onboard electronics. Use this guide to locate specific technical details, troubleshoot issues, or perform maintenance. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.
How to Use
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Key Specifications
Battery Voltage
12V
Alternator Output
120A
Headlight Wattage
35W
Fuse Ratings
5A-40A
Wiring Gauge
18-12 AWG
Available Specifications
Battery and Charging System
This section covers the battery specifications, charging system components, and related electrical details for the Infiniti FX45. It includes information on voltage, capacity, and maintenance requirements.
Battery and Charging System
This section covers the battery specifications, charging system components, and related electrical details for the Infiniti FX45. It includes information on voltage, capacity, and maintenance requirements.
Battery Specifications
- Battery type: Maintenance-free lead-acid
- Voltage: 12V
- Capacity: 70Ah
- Cold Cranking Amps (CCA): 650A
- Terminal type: Top-post
- Replacement interval: 3-5 years
Alternator Specifications
- Output: 120A
- Voltage regulation: 13.5-14.5V
- Belt type: Serpentine
- Replacement interval: 100,000-150,000 miles
Lighting System
This section provides details on the vehicle's exterior and interior lighting systems, including headlights, taillights, and dashboard illumination.
Lighting System
This section provides details on the vehicle's exterior and interior lighting systems, including headlights, taillights, and dashboard illumination.
Exterior Lighting
- Headlight type: HID (High-Intensity Discharge)
- Headlight wattage: 35W
- Taillight type: LED
- Fog light wattage: 55W
Interior Lighting
- Dashboard illumination: LED
- Dome light wattage: 10W
- Map light wattage: 5W
- Ambient lighting: Optional
Wiring and Fuses
This section outlines the wiring harness, fuse box locations, and electrical protection systems in the Infiniti FX45.
Wiring and Fuses
This section outlines the wiring harness, fuse box locations, and electrical protection systems in the Infiniti FX45.
Fuse Box Locations
- Main fuse box: Under the hood
- Secondary fuse box: Inside the cabin
- Fuse types: Mini, standard, and maxi
- Fuse ratings: 5A to 40A
Wiring Harness
- Material: Copper with PVC insulation
- Gauge range: 18-12 AWG
- Color coding: Standardized for easy identification
- Protection: Heat-resistant sleeves
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Component Specifications
Overview
- Type
- 12V DC system
- Configuration
- Negative ground
- Platform
- Integrated vehicle electrical system
- Material
- Copper wiring with PVC insulation
- Location
- Distributed throughout vehicle
Dimensions
- Battery Length
- 10.5 in (266.7 mm)
- Battery Width
- 6.9 in (175.3 mm)
- Battery Height
- 7.5 in (190.5 mm)
- Alternator Diameter
- 5.1 in (129.5 mm)
- Alternator Length
- 7.2 in (182.9 mm)
- Starter Motor Diameter
- 4.7 in (119.4 mm)
- Starter Motor Length
- 6.3 in (160 mm)
Materials
- Battery Case
- Polypropylene
- Alternator Housing
- Aluminum alloy
- Starter Motor Housing
- Cast iron
- Wiring Harness
- Copper with PVC insulation
- Fuse Box
- Thermoplastic
Features
- Lighting
-
- Xenon HID headlights
- LED tail lights
- Automatic headlight leveling
- Fog lights
- Power Distribution
-
- 120A alternator
- 70Ah battery
- Centralized fuse box
- Smart power distribution system
- Charging System
-
- Voltage regulator
- Battery monitoring system
- Alternator with overcharge protection
- Sensors
-
- Rain-sensing wipers
- Light sensors
- Battery voltage sensor
- Alternator output sensor
- Entertainment
-
- Bose audio system
- Navigation system
- Bluetooth connectivity
- Rear seat entertainment option
Safety Features
- Circuit Protection
-
- Main fuse box
- Individual circuit fuses
- Relay protection
- Emergency Features
-
- Automatic hazard lights
- Emergency battery disconnect
- Backup power for critical systems
- Lighting Safety
-
- Automatic emergency braking lights
- Daytime running lights
- Adaptive headlight system
Comfort Features
- Climate Control
-
- Automatic dual-zone climate control
- Rear seat vents
- Heated seats
- Lighting
-
- Interior mood lighting
- Automatic dimming rearview mirror
- Puddle lights
- Power Features
-
- Power windows with auto-up/down
- Power adjustable seats
- Power tailgate
- Convenience
-
- Keyless entry
- Push-button start
- Automatic headlights
Accessories
- Exterior
-
- LED light bars
- Additional fog lights
- Trailer wiring harness
- interior
-
- USB charging ports
- Wireless phone charger
- Additional power outlets
- Performance
-
- High-output alternator
- Upgraded battery
- Performance wiring harness
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Battery terminal cleaning
- Alternator belt inspection
- Fuse box inspection
- Wiring harness check
- Ground connection verification
- Maintenance Notes
- Use only manufacturer-recommended replacement parts for electrical components
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Electrical components excluding wear items
- Powertrain
- Miles: 60,000Years: 5Coverage: Alternator and starter motor
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Electrical connectors and wiring
- Battery
- Miles: 36,000Years: 3Coverage: Original equipment battery
Production Details
- Manufacturer
- Infiniti (Nissan Motor Co.)
- Manufacturing Process
-
- Automated wiring harness assembly
- Robotic component installation
- Automated testing systems
- Quality Control
- Testing: Voltage drop testing, Load testing, Continuity checksStandards: ISO 9001, SAE electrical standards, JIS D 5301 compliance
- Sustainability Practices
-
- Lead-free battery terminals
- Recyclable wiring materials
- Energy-efficient manufacturing
- Production Metrics
- Daily Output: 500 unitsDefect Rate: 0.02%Testing Time: 45 minutes per vehicle
Service Information for electrical Service
Maintenance and service requirements specific to the electrical system
- Inspect battery terminals and cables
- Check alternator output
- Test starter motor operation
- Inspect wiring harness for damage
- Verify ground connections
Use dielectric grease on all electrical connections
- Replace battery if necessary
- Inspect alternator brushes
- Check voltage regulator operation
- Test all fuses and relays
- Inspect all lighting circuits
Perform load test on entire electrical system
- Replace alternator if necessary
- Replace starter motor if necessary
- Inspect and replace wiring harness if needed
- Upgrade grounding system
- Perform complete electrical system diagnostic
Consider upgrading to high-output alternator if adding accessories
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the electrical system specifications for the 2003-2008 Infiniti FX45?
What are the electrical system specifications for the 2003-2008 Infiniti FX45?
The 2003-2008 Infiniti FX45 features a 12-volt electrical system with a 110-amp alternator and a maintenance-free battery. The system supports advanced features like power windows, heated seats, and a premium Bose audio system. It is compatible with standard automotive electrical components but requires OEM or equivalent parts for optimal performance. Always verify compatibility with your vehicle's VIN for aftermarket upgrades.
Q2 What are the maintenance requirements for the FX45's electrical system?
What are the maintenance requirements for the FX45's electrical system?
Regular maintenance includes inspecting the battery terminals for corrosion, ensuring the alternator is charging properly, and checking fuses and wiring for wear. Replace the battery every 3-5 years and test the charging system annually. Keep the electrical connections clean and secure. Refer to the owner's manual for a detailed maintenance schedule and consult a professional for complex issues.
Q3 How do I replace the battery in a 2003-2008 Infiniti FX45?
How do I replace the battery in a 2003-2008 Infiniti FX45?
To replace the battery, first, turn off the engine and disconnect the negative terminal, followed by the positive terminal. Remove the battery hold-down clamp and carefully lift the battery out. Install the new battery, secure it with the clamp, and reconnect the terminals (positive first, then negative). Ensure the connections are tight and corrosion-free. Test the vehicle to confirm proper operation.
Q4 What should I do if my FX45's electrical system malfunctions?
What should I do if my FX45's electrical system malfunctions?
Start by checking the battery voltage with a multimeter; it should read 12.6V when off and 13.7-14.7V when running. Inspect fuses for breaks and wiring for damage. If issues persist, scan for error codes using an OBD-II scanner. Common problems include a failing alternator, corroded terminals, or blown fuses. Seek professional assistance for complex diagnostics.
Q5 How can I optimize the electrical system performance in my FX45?
How can I optimize the electrical system performance in my FX45?
To optimize performance, use high-quality OEM or equivalent parts, ensure the battery is fully charged, and keep the alternator in good condition. Upgrade to a higher-capacity battery if using additional accessories. Regularly inspect and clean electrical connections. Avoid overloading the system with aftermarket devices that exceed the alternator's output capacity.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2003-2008 Infiniti FX45 Service Manual
Coming SoonComprehensive guide covering electrical system diagnostics, maintenance, and repair procedures for the FX45.
Infiniti FX45 Technical Service Bulletin (TSB) Updates
Coming SoonCollection of TSBs addressing common electrical system issues and recommended fixes for the FX45.
Infiniti FX45 Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM electrical components and accessories for the 2003-2008 FX45.
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