Lexus RX 2016-2019 Electrical Specifications
Lexus RX 2016-2019

Lexus RX 2016-2019 Electrical Specifications

Explore the detailed electrical specifications for the 2016-2019 Lexus RX, including battery, alternator, wiring, and lighting systems. Ideal for maintenance, repairs, and upgrades.

Updated

Overview Specifications

This document provides detailed electrical specifications for the 2016-2019 Lexus RX models. It covers key components such as the battery, charging system, lighting, and infotainment systems. Use this guide to understand the technical aspects of the vehicle's electrical systems, troubleshoot issues, or plan modifications. The document is organized into sections for easy navigation, with quick reference tables for essential specifications.

How to Use

Use the search function to quickly locate specific terms or components. Enter keywords like 'battery' or 'headlights' to find relevant sections. The search results will highlight matching sections and subsections.

Navigate through the document using the table of contents. Each major section is divided into subsections with detailed technical points. Click on a section title to expand and view its contents.

Key Specifications

Battery Capacity

70 Ah

Alternator Output

150 A

Headlight Type

LED with AFS

Infotainment Display

12.3-inch

Audio System

Mark Levinson (optional)

Available Specifications

Battery and Charging System

This section covers the specifications and features of the Lexus RX's battery and charging system. It includes details on battery capacity, alternator output, and maintenance tips to ensure optimal performance.

Battery Specifications
  • 12V lead-acid battery
  • Capacity: 70 Ah
  • Cold Cranking Amps (CCA): 650 A
  • Maintenance-free design
  • Battery life: 3-5 years under normal conditions
  • Replacement recommended at 40,000-50,000 miles
Charging System
  • Alternator output: 150 A
  • Voltage regulator integrated into alternator
  • Charging voltage: 13.5-14.5 V
  • Automatic load detection for efficient charging

Lighting System

This section provides details on the Lexus RX's lighting system, including headlights, taillights, and interior lighting. It highlights advanced features like LED technology and adaptive lighting systems.

Exterior Lighting
  • LED headlights with automatic leveling
  • Adaptive Front Lighting System (AFS)
  • LED daytime running lights (DRL)
  • LED taillights with sequential turn signals
Interior Lighting
  • Ambient LED lighting with customizable colors
  • LED map lights and dome lights
  • Automatic dimming for rearview mirror
  • Puddle lights integrated into side mirrors

Infotainment and Connectivity

This section outlines the electrical components of the Lexus RX's infotainment system, including the display, audio system, and connectivity options. It also covers advanced driver-assistance features.

Display and Audio
  • 12.3-inch high-resolution display
  • Mark Levinson premium audio system (optional)
  • 13-speaker surround sound
  • HD Radio and SiriusXM compatibility
Connectivity
  • Bluetooth hands-free calling and audio streaming
  • Apple CarPlay and Android Auto integration
  • USB ports for charging and media playback
  • Wireless smartphone charging pad (optional)
Driver-Assistance Features
  • Lexus Safety System+ with pre-collision warning
  • Adaptive cruise control with lane-keeping assist
  • Blind-spot monitoring with rear cross-traffic alert
  • 360-degree camera system (optional)

Component Specifications

Overview

Type
12V DC System
Configuration
Single Battery with Alternator
Platform
Hybrid and Non-Hybrid Variants
Material
Copper Wiring with Aluminum Alloy Components
Location
Front Engine Bay and Rear for Hybrid Battery

Dimensions

Battery Length
10.2 in (259 mm)
Battery Width
6.9 in (175 mm)
Battery Height
7.5 in (190 mm)
Alternator Diameter
5.1 in (130 mm)
Wiring Harness Length
98.4 ft (30 m)
Fuse Box Width
8.7 in (220 mm)
Fuse Box Depth
3.9 in (100 mm)

Materials

Battery Case
Polypropylene with Fiberglass Reinforcement
Wiring
Copper with PVC Insulation
Alternator Housing
Aluminum Alloy
Fuse Box
Thermoplastic with Copper 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
  • 12.3-inch Display
  • Mark Levinson Premium Audio
  • Bluetooth Connectivity
  • Navigation System
Safety Systems
  • Blind Spot Monitor
  • Lane Departure Alert
  • Pre-Collision System
  • Adaptive Cruise Control
Hybrid System
  • Hybrid Battery Cooling System
  • Regenerative Braking
  • EV Mode
  • Energy Monitor

Safety Features

Circuit Protection
  • Fuse Protection
  • Circuit Breakers
  • Overload Detection
Battery Safety
  • Battery Management System
  • Thermal Protection
  • Short Circuit Prevention
Wiring Safety
  • Fire-Resistant Insulation
  • Crash Detection Shutoff
  • Ground Fault Protection

Comfort Features

Climate Control
  • Tri-Zone Automatic Climate Control
  • Heated and Ventilated Seats
  • Remote Climate Start
Lighting Comfort
  • Ambient Interior Lighting
  • Automatic Dimming Mirrors
  • Rain-Sensing Wipers
Convenience
  • Wireless Charging Pad
  • USB Charging Ports
  • Head-Up Display

Accessories

Charging
  • Portable Charger
  • Home Charging Station
  • Fast Charging Adapter
Lighting Upgrades
  • LED Fog Lights
  • Interior LED Kit
  • Custom Tail Lights
Audio
  • Premium Sound System Upgrade
  • Subwoofer Kit
  • Amplifier

Maintenance

Service interval
Every 10,000 miles or 12 months
Service Items
  • Battery Terminal Cleaning
  • Alternator Belt Inspection
  • Fuse Box Check
  • Wiring Harness Inspection
  • Hybrid Battery Cooling System Check
Maintenance Notes
Use only manufacturer-recommended parts and fluids.

Warranty

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

Production Details

Manufacturer
Lexus
Manufacturing Process
  • Automated Wiring Harness Assembly
  • Precision Battery Pack Assembly
  • Quality-Controlled Alternator Production
Quality Control
Testing: High-Voltage Leakage Test, Circuit Continuity Test, Thermal Stress Test
Certifications: ISO 9001, ISO 14001
Sustainability Practices
  • Recyclable Battery Components
  • Energy-Efficient Manufacturing
  • Reduced VOC Emissions
Production Metrics
Annual Output: 500,000 Units
Defect Rate: 0.01%
Energy Usage: 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 fuses and relays
  • Inspect wiring harness for wear
  • Verify hybrid battery cooling system operation

Ensure all connections are secure and free of debris.

30,000
36
  • Replace cabin air filter
  • Inspect and clean grounding points
  • Test charging system output
  • Check hybrid battery health
  • Inspect all lighting systems

Use diagnostic tools to verify system performance.

60,000
72
  • Replace alternator belt if necessary
  • Inspect and replace worn wiring
  • Test hybrid battery capacity
  • Check and replace fuses as needed
  • Perform full system diagnostic

Major service interval requires specialized equipment.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the electrical system specifications for the 2016-2019 Lexus RX?

The 2016-2019 Lexus RX features a 12-volt electrical system with a 12V 35Ah maintenance-free battery. It supports advanced electrical components like LED lighting, a 12.3-inch multimedia display, and a premium audio system. The vehicle is compatible with standard charging systems and includes a 120V AC power inverter in select trims. Always refer to the owner's manual for specific compatibility details.

Q2

What are the maintenance requirements for the Lexus RX electrical system?

The Lexus RX electrical system requires regular inspections of the battery, alternator, and wiring. Battery terminals should be cleaned every 12 months, and the battery should be tested annually. Fuses and relays should be checked during routine service. Ensure software updates for the infotainment system are installed as recommended by Lexus to maintain optimal performance.

Q3

How do I replace the battery in a 2016-2019 Lexus RX?

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 in reverse order. Ensure the battery is properly seated and terminals are tightened to avoid electrical issues.

Q4

What should I do if the electrical system in my Lexus RX malfunctions?

If the electrical system malfunctions, check the battery connections for corrosion or looseness. Inspect fuses and replace any that are blown. If issues persist, use a diagnostic tool to scan for error codes. Common problems include faulty alternators or wiring issues. For complex problems, consult a certified Lexus technician for professional diagnosis and repair.

Q5

How can I optimize the performance of the Lexus RX electrical system?

To optimize performance, ensure the battery is fully charged and terminals are clean. Use genuine Lexus parts for replacements. Regularly update the infotainment system software. Avoid overloading the electrical system with aftermarket accessories. Schedule routine inspections to identify and address potential issues early, ensuring the system operates efficiently.

Factory Service Resources

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

2016-2019 Lexus RX Electrical System Service Manual

Coming Soon

Detailed guide covering the electrical system components, wiring diagrams, and troubleshooting procedures for the 2016-2019 Lexus RX.

Technical Service Bulletin: Electrical System Updates

Coming Soon

Latest updates and fixes for the electrical system, including software patches and component recalls for the 2016-2019 Lexus RX.

Lexus RX Parts and Accessories Catalog

Coming Soon

Comprehensive catalog of genuine Lexus parts and accessories, including electrical components, for the 2016-2019 RX models.

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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