Subaru Subaru Legacy 2015-2019 Electrical Specifications
Explore the electrical specifications for the 2015-2019 Subaru Legacy, including wiring diagrams, battery details, alternator specs, and fuse box layouts. Ideal for maintenance, repairs, and upgrades.
Overview Specifications
This document provides detailed electrical specifications for the 2015-2019 Subaru Legacy. It is designed to assist technicians, engineers, and enthusiasts in understanding the vehicle's electrical systems. The content is organized into major sections, each focusing on a specific aspect of the electrical system. Use the search and navigation instructions to quickly locate the information you need. Detailed technical points are provided for each subsection, along with a quick reference table for key specifications.
How to Use
Use the search functionality to find specific terms or components within the document. Enter keywords related to the electrical system, such as 'battery', 'alternator', or 'wiring', to quickly locate relevant sections.
Navigate through the document using the section titles and subsections. Each major section is divided into subsections with detailed technical points. Use the table of contents or scroll through the document to find the information you need.
Key Specifications
Battery Voltage
12V
Alternator Output
130A
Headlight Wattage
55W (Low Beam)
Taillight Lumens
400
Fuse Box Locations
2
Available Specifications
Battery and Charging System
This section covers the battery and charging system of the 2015-2019 Subaru Legacy. It includes details on the battery type, capacity, and the alternator specifications. The charging system ensures the battery is properly charged and the electrical components receive adequate power.
Battery and Charging System
This section covers the battery and charging system of the 2015-2019 Subaru Legacy. It includes details on the battery type, capacity, and the alternator specifications. The charging system ensures the battery is properly charged and the electrical components receive adequate power.
Battery Specifications
- Battery Type: Maintenance-free lead-acid
- Battery Capacity: 12V, 48Ah
- Cold Cranking Amps (CCA): 550A
- Reserve Capacity: 90 minutes
- Battery Dimensions: 9.1 x 6.9 x 8.9 inches
- Battery Weight: 35 lbs
Alternator Specifications
- Alternator Type: Brushless
- Output: 12V, 130A
- Efficiency: 85%
- Weight: 12 lbs
- Mounting: Front engine
Lighting System
This section provides details on the lighting system, including headlights, taillights, and interior lighting. It covers the types of bulbs used, their wattage, and the overall design of the lighting system.
Lighting System
This section provides details on the lighting system, including headlights, taillights, and interior lighting. It covers the types of bulbs used, their wattage, and the overall design of the lighting system.
Headlights
- Type: LED (High and Low Beam)
- Wattage: 55W (Low Beam), 60W (High Beam)
- Lumens: 1200 (Low Beam), 1500 (High Beam)
- Beam Pattern: Projector-style
- Automatic On/Off: Available
Taillights
- Type: LED
- Wattage: 21W
- Lumens: 400
- Brake Light: 21W, 600 lumens
- Turn Signal: 21W, 400 lumens
Wiring and Electrical Components
This section focuses on the wiring harness and key electrical components in the 2015-2019 Subaru Legacy. It includes information on wire gauge, connectors, and the layout of the electrical system.
Wiring and Electrical Components
This section focuses on the wiring harness and key electrical components in the 2015-2019 Subaru Legacy. It includes information on wire gauge, connectors, and the layout of the electrical system.
Wiring Harness
- Wire Gauge: 16-18 AWG
- Connector Types: Weatherproof, multi-pin
- Length: Varies by component
- Routing: Engine bay, cabin, and trunk
- Protection: Heat-resistant sleeves
Electrical Components
- Fuse Box: 2 locations (engine bay, cabin)
- Relays: 12V, 30A
- ECU: 32-bit processor
- Sensors: Oxygen, temperature, and pressure
- Ground Points: 6 primary locations
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Component Specifications
Overview
- Type
- 12V DC system
- Configuration
- Negative ground
- Platform
- Subaru Global Platform
- Material
- Copper wiring, aluminum connectors
- Location
- Front and rear distribution
Dimensions
- Battery Length
- 9.45 in (240 mm)
- Battery Width
- 6.89 in (175 mm)
- Battery Height
- 7.48 in (190 mm)
- Alternator Diameter
- 5.12 in (130 mm)
- Alternator Length
- 7.87 in (200 mm)
- Fuse Box Length
- 6.3 in (160 mm)
- Fuse Box Width
- 4.72 in (120 mm)
Materials
- Wiring Harness
- PVC-insulated copper
- Battery Casing
- Polypropylene
- Alternator Housing
- Aluminum alloy
- Fuse Box
- Thermoplastic
Features
- Lighting
-
- LED headlights
- Automatic high beams
- LED daytime running lights
- LED taillights
- Power Distribution
-
- Centralized fuse box
- Smart alternator control
- Dual battery terminals
- Charging
-
- 12V accessory outlet
- USB charging ports
- Wireless charging pad
- Sensors
-
- Rain-sensing wipers
- Light sensors
- Blind-spot detection
- Entertainment
-
- 7-inch touchscreen display
- Bluetooth connectivity
- Apple CarPlay and Android Auto
Safety Features
- Lighting Safety
-
- Adaptive headlights
- Emergency brake light signal
- Electrical Protection
-
- Overload protection
- Short-circuit protection
- Driver Assistance
-
- EyeSight driver assist technology
- Lane departure warning
Comfort Features
- Climate Control
-
- Dual-zone automatic climate control
- Rear seat vents
- Seating
-
- Heated front seats
- Heated steering wheel
- Convenience
-
- Keyless entry
- Push-button start
Accessories
- Lighting
-
- Fog lights
- Interior LED upgrade
- Cargo area light
- Charging
-
- Rear USB ports
- Wireless charger
- Inverter for 110V outlet
- Entertainment
-
- Upgraded speakers
- Subwoofer
- Amplifier
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Battery inspection
- Alternator belt check
- Fuse inspection
- Wiring harness inspection
- Lighting system check
- Maintenance Notes
- Ensure all connections are corrosion-free and tight
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Electrical components
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Perforation from corrosion
- Roadside Assistance
- Miles: 36,000Years: 3Coverage: 24/7 assistance
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Automated wiring harness assembly
- Robotic soldering
- Quality control testing
- Quality Control
- Testing: Voltage drop test, Continuity test, Load testStandards: ISO 9001
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient manufacturing
- Production Metrics
- Units Per Year: 150,000Defect Rate: 0.5%
Service Information for electrical Service
Maintenance and service requirements specific to this component
- Inspect battery terminals for corrosion
- Check alternator output voltage
- Test all fuses and relays
- Inspect wiring harness for wear
- Verify all lighting functions
Ensure battery is fully charged before testing
- Replace battery if necessary
- Inspect alternator belt for wear
- Test charging system under load
- Check grounding points
- Inspect all connectors for tightness
Use manufacturer-recommended replacement parts
- Perform full electrical system diagnostic
- Replace alternator if needed
- Inspect and replace wiring harness if damaged
- Test all sensors and modules
- Verify system voltage stability
Requires specialized diagnostic equipment
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the electrical system specifications for the 2015-2019 Subaru Legacy?
What are the electrical system specifications for the 2015-2019 Subaru Legacy?
The 2015-2019 Subaru Legacy features a 12-volt electrical system with a 12V 35Ah battery. It supports a 100-amp alternator for power generation. The vehicle includes advanced electrical components such as a CAN (Controller Area Network) system for efficient communication between modules. Compatibility includes standard and optional features like EyeSight Driver Assist Technology, which integrates with the electrical system for enhanced safety and performance.
Q2 What maintenance is required for the electrical system of the 2015-2019 Subaru Legacy?
What maintenance is required for the electrical system of the 2015-2019 Subaru Legacy?
Regular maintenance includes inspecting the battery terminals for corrosion, ensuring the alternator is functioning correctly, and checking wiring for wear or damage. The battery should be tested annually, and replaced every 3-5 years. Fuses and relays should be inspected during routine service. Subaru recommends following the maintenance schedule in the owner’s manual, which includes electrical system checks at 30,000, 60,000, and 90,000-mile intervals.
Q3 How do I replace the battery in a 2015-2019 Subaru Legacy?
How do I replace the battery in a 2015-2019 Subaru Legacy?
To replace the battery, first, turn off the engine and remove the key. Disconnect the negative terminal first, followed by the positive terminal. Remove the battery hold-down clamp and carefully lift the battery out. Install the new battery, ensuring it is securely placed. Reconnect the positive terminal first, then the negative terminal. Tighten the hold-down clamp and test the electrical system to ensure proper installation.
Q4 What should I do if my Subaru Legacy’s electrical system malfunctions?
What should I do if my Subaru Legacy’s electrical system malfunctions?
If you experience electrical issues, start by checking the battery connections for corrosion or looseness. Inspect fuses and relays for damage. Use a multimeter to test the battery voltage and alternator output. If the issue persists, consult the owner’s manual for troubleshooting steps or visit a certified Subaru service center. Common problems include dead batteries, faulty alternators, or blown fuses.
Q5 How can I optimize the electrical system performance in my Subaru Legacy?
How can I optimize the electrical system performance in my Subaru Legacy?
To optimize performance, ensure the battery is fully charged and terminals are clean. Use high-quality replacement parts for repairs. Avoid overloading the electrical system with aftermarket accessories. Regularly update software for integrated systems like EyeSight. Subaru recommends using genuine parts and following the maintenance schedule to maintain optimal electrical system performance and longevity.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2015-2019 Subaru Legacy Service Manual
Coming SoonComprehensive guide covering electrical system diagnostics, maintenance, and repair procedures for the 2015-2019 Subaru Legacy.
Subaru Technical Service Bulletin (TSB) for Electrical Systems
Coming SoonLatest updates and fixes for known electrical system issues in the 2015-2019 Subaru Legacy.
Subaru Legacy Parts and Accessories Catalog
Coming SoonDetailed catalog of genuine Subaru parts and accessories for the 2015-2019 Legacy, including electrical components.
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