Lexus NX 2015-2021 Electrical Specifications
Lexus NX 2015-2021

Lexus NX 2015-2021 Electrical Specifications

Explore the detailed electrical specifications for the 2015-2021 Lexus NX, including battery, alternator, wiring, and fuse details. Ideal for maintenance, repairs, and upgrades.

Updated

Overview Specifications

This document provides detailed electrical specifications for the 2015-2021 Lexus NX. It is designed to assist users in understanding the vehicle's electrical systems, including battery, charging, lighting, and infotainment features. Use the search functionality to locate specific terms or navigate through sections to explore detailed technical information. This guide is ideal for technicians, enthusiasts, and owners seeking in-depth knowledge of the Lexus NX's electrical components.

How to Use

Use the search bar to enter keywords related to the electrical system, such as 'battery capacity' or 'headlight specifications'. Results will highlight relevant sections and subsections for quick access.

Scroll through the document or use the table of contents to jump to specific sections. Each section is organized into subsections with detailed technical points for easy reference.

Key Specifications

Battery Capacity (Hybrid)

1.6 kWh

Alternator Output (Hybrid)

180A

Headlight Type

LED

Infotainment Display Size

10.3 inches

Wireless Charging

Qi-compatible

Available Specifications

Battery and Charging System

This section covers the Lexus NX's battery specifications, charging system, and related components. It includes details on battery type, capacity, alternator output, and charging times for hybrid models.

Battery Specifications
  • 12V lead-acid battery for non-hybrid models
  • 288V lithium-ion battery for hybrid models
  • Battery capacity: 6.5 Ah (non-hybrid), 1.6 kWh (hybrid)
  • Cold-cranking amps (CCA): 650A (non-hybrid)
  • Maintenance-free design with integrated monitoring system
Charging System
  • Alternator output: 150A (non-hybrid), 180A (hybrid)
  • Regenerative braking system for hybrid models
  • Charging time for hybrid battery: 2-3 hours (240V)
  • Smart charging system to optimize battery life
  • Battery warranty: 8 years or 100,000 miles (hybrid)

Lighting System

This section provides details on the Lexus NX's exterior and interior lighting systems, including headlights, taillights, and ambient lighting. It covers specifications for LED and halogen options.

Exterior Lighting
  • LED headlights with auto-leveling and adaptive front-lighting system (AFS)
  • LED daytime running lights (DRL)
  • LED taillights with sequential turn signals
  • Halogen fog lights (optional upgrade to LED)
  • Automatic high-beam system (AHB)
Interior Lighting
  • LED ambient lighting with customizable colors
  • LED map lights and dome lights
  • Illuminated entry system with puddle lights
  • Rear reading lights for passenger comfort
  • Adjustable brightness for all interior lights

Infotainment and Connectivity

This section outlines the Lexus NX's infotainment and connectivity features, including audio systems, navigation, and smartphone integration. It also covers USB ports and wireless charging options.

Audio and Navigation
  • 10.3-inch high-resolution touchscreen display
  • Premium audio system by Mark Levinson (optional)
  • Built-in navigation with real-time traffic updates
  • Voice command functionality for hands-free control
  • HD Radio and SiriusXM satellite radio compatibility
Connectivity
  • Apple CarPlay and Android Auto integration
  • Bluetooth connectivity for hands-free calling and audio streaming
  • Dual USB ports for front and rear passengers
  • Qi-compatible wireless charging pad (optional)
  • Lexus Enform app suite for remote vehicle access

Component Specifications

Overview

Type
12V Electrical System
Configuration
Negative Ground
Platform
Lexus NX Platform
Material
Copper Wiring, Aluminum Components
Location
Front Engine Compartment

Dimensions

Battery Length
9.5 inches (241 mm)
Battery Width
6.9 inches (175 mm)
Battery Height
7.5 inches (190 mm)
Alternator Diameter
5.1 inches (130 mm)
Alternator Length
7.9 inches (200 mm)
Wiring Harness Length
15.7 feet (4.8 meters)
Fuse Box Dimensions
6.3 x 4.7 x 2.4 inches (160 x 120 x 60 mm)

Materials

Battery Case
Polypropylene
Alternator Housing
Aluminum Alloy
Wiring Harness
Copper with PVC Insulation
Fuse Box
Thermoplastic
Connectors
Nylon with Brass Contacts

Features

Lighting
  • LED Headlights
  • Adaptive Front Lighting System
  • Automatic High Beam
  • LED Daytime Running Lights
Power Distribution
  • Smart Key System
  • Power Windows with Auto Up/Down
  • Power Tailgate
  • 12V Power Outlets
infotainment
  • 10.3-inch Touchscreen Display
  • Bluetooth Connectivity
  • Navigation System
  • Mark Levinson Premium Audio
Safety
  • Blind Spot Monitor
  • Rear Cross Traffic Alert
  • Lane Departure Warning
  • Adaptive Cruise Control
Climate Control
  • Dual Zone Automatic Climate Control
  • Rear Ventilation System
  • Heated and Ventilated Seats
  • Remote Climate Control

Safety Features

Circuit Protection
  • Electronic Circuit Breakers
  • Fuse Protection
  • Overload Protection
Emergency Features
  • Automatic Emergency Braking
  • Emergency Stop Signal
  • Hazard Lights with Auto Activation
Battery Safety
  • Battery Management System
  • Overcharge Protection
  • Short Circuit Protection

Comfort Features

Lighting
  • Ambient Interior Lighting
  • Automatic Dimming Rearview Mirror
  • Puddle Lights
Convenience
  • Wireless Charging Pad
  • USB Charging Ports
  • Heated Steering Wheel
Climate
  • Remote Start with Climate Control
  • Air Quality Sensor
  • Windshield De-icer
Seating
  • Memory Seats with Power Adjustment
  • Heated Rear Seats
  • Power Lumbar Support

Accessories

Lighting
  • LED Fog Lights
  • Interior LED Upgrade Kit
  • LED License Plate Lights
Charging
  • USB Fast Charger
  • Wireless Charging Pad
  • 12V to USB Adapter
Protection
  • Battery Terminal Protectors
  • Fuse Box Cover
  • Wiring Harness Tape

Maintenance

Service interval
Every 10,000 miles or 12 months
Service Items
  • Battery Inspection
  • Alternator Belt Check
  • Fuse Inspection
  • Wiring Harness Check
  • Lighting System Test
  • Ground Connection Check
Maintenance Notes
Ensure all electrical connections are clean and secure. Use only OEM parts for replacements.

Warranty

Basic Warranty
Miles: 50,000
Years: 4
Coverage: Bumper to Bumper
Powertrain Warranty
Miles: 70,000
Years: 6
Coverage: Engine, Transmission, Drivetrain
Hybrid Warranty
Miles: 100,000
Years: 8
Coverage: Hybrid Components
Corrosion Warranty
Miles: Unlimited
Years: 6
Coverage: Perforation from Corrosion

Production Details

Manufacturer
Lexus
Manufacturing Process
  • Automated Wiring Harness Assembly
  • Precision Battery Testing
  • Quality Control for Electrical Components
Quality Control
Testing: Voltage Stability Test, Load Testing, Environmental Stress Testing
Standards: ISO 9001, ISO 14001, ISO 26262
Sustainability Practices
  • Recyclable Materials in Wiring
  • Energy-Efficient Manufacturing
  • Reduced Emissions in Production
Production Metrics
Units Produced: 500,000 annually
Defect Rate: 0.01%
Energy Consumption: 15 kWh per unit

Service Information for Electrical Service

Maintenance and service requirements specific to the electrical system

10,000
12
  • Inspect battery terminals for corrosion
  • Check alternator belt tension
  • Test all exterior and interior lights
  • Inspect wiring harness for wear
  • Verify ground connections

Ensure all connections are clean and secure. Use dielectric grease on terminals.

30,000
36
  • Perform battery load test
  • Inspect alternator output
  • Check fuse box for any blown fuses
  • Test charging system performance
  • Inspect all electrical connectors

Use a multimeter to verify voltage levels. Replace any worn components.

60,000
72
  • Replace alternator belt if necessary
  • Inspect and clean all grounding points
  • Test battery health and replace if needed
  • Check for any software updates
  • Perform comprehensive electrical system diagnostic

Critical to replace any worn belts or components to prevent system failure.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the electrical system specifications for the 2015-2021 Lexus NX?

The 2015-2021 Lexus NX features a 12-volt electrical system with a 35-45 Ah battery, depending on the trim. It supports advanced features like LED lighting, a 7-inch or 10.3-inch infotainment display, and optional wireless charging. The system is compatible with both standard and hybrid models, with the hybrid variant incorporating a high-voltage battery for the electric motor.

Q2

What maintenance is required for the Lexus NX electrical system?

Regular maintenance includes checking the battery terminals for corrosion, ensuring proper voltage levels (12.4-12.7V), and inspecting wiring for wear. The hybrid battery requires periodic diagnostics via Lexus dealerships. Fuses and relays should be checked annually, and software updates for the infotainment system should be performed as recommended.

Q3

How do I replace the battery in a Lexus NX?

To replace the battery, disconnect the negative terminal first, followed by the positive terminal. Remove the battery hold-down clamp and lift the battery out. Install the new battery, secure it with the clamp, and reconnect the terminals in reverse order. Ensure the battery is compatible with the Lexus NX specifications.

Q4

What should I do if my Lexus NX electrical system malfunctions?

Start by checking the battery voltage and connections. Inspect fuses and relays for damage. If the infotainment system fails, perform a reset by holding the power button for 10 seconds. For persistent issues, use an OBD-II scanner to diagnose error codes or consult a Lexus technician.

Q5

How can I optimize the electrical system performance in my Lexus NX?

Ensure the battery is fully charged and replace it every 3-5 years. Use high-quality fuses and relays to prevent electrical failures. Regularly update the infotainment system software and avoid overloading the system with aftermarket accessories. For hybrid models, maintain the high-voltage battery by following Lexus-recommended guidelines.

Factory Service Resources

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

Lexus NX 2015-2021 Service Manual

Coming Soon

Comprehensive guide covering electrical system diagnostics, maintenance, and repair procedures for the Lexus NX.

Technical Service Bulletin: Electrical System Updates

Coming Soon

Details software updates and fixes for the electrical system, including infotainment and hybrid battery management.

Lexus NX Parts and Accessories Catalog

Coming Soon

Catalog listing OEM electrical components, including batteries, fuses, and wiring harnesses for the Lexus NX.

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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