Audi Audi S8 2019-present Electrical Specifications
Audi Audi S8 2019-present

Audi Audi S8 2019-present Electrical Specifications

Detailed electrical specifications, wiring diagrams, and fuse box information for the 2023 Audi S8. Essential for technicians and enthusiasts performing maintenance, repairs, or upgrades.

Updated

Electrical Specifications Overview Specifications

This document provides a comprehensive overview of the electrical specifications for the 2019-Present Audi S8. It includes detailed information about the vehicle's electrical systems, components, and key features. Use this guide to understand the technical aspects of the Audi S8's electrical architecture, battery systems, charging capabilities, and more. Navigate through the sections to find specific details or use the search functionality to quickly locate information.

How to Use

To search for specific information, use the search bar at the top of the document. Type in keywords such as 'battery capacity', 'charging time', or 'electrical architecture' to find relevant details.

Navigate through the document by selecting sections from the table of contents. Each section is organized by major electrical systems, with subsections providing detailed specifications and technical points.

Key Specifications

Battery Capacity

0.5 kWh

Electric Motor Power

12 kW

Charging Power

7.2 kW

Voltage Levels

12V / 48V

Regenerative Braking

Up to 12 kW

Available Specifications

Electrical Powertrain

This section outlines the key components and specifications of the Audi S8's electrical powertrain, including the hybrid system, electric motor, and battery performance.

Hybrid System Overview
  • Mild-hybrid system (MHEV) with 48-volt electrical architecture
  • Supports coasting with engine off at speeds up to 160 km/h
  • Provides up to 12 kW of energy recovery
  • Reduces fuel consumption by up to 0.7 liters per 100 km
  • Seamless integration with the 4.0L TFSI engine
Electric Motor Specifications
  • Electric motor power: up to 12 kW
  • Torque assistance: up to 60 Nm
  • Operating voltage: 48 volts
  • Integrated into the transmission
  • Supports start/stop functionality

Battery System

This section details the specifications and capabilities of the Audi S8's battery system, including capacity, charging, and management.

Battery Specifications
  • Battery type: Lithium-ion
  • Capacity: 10 Ah
  • Voltage: 48 volts
  • Energy storage: 0.5 kWh
  • Located under the luggage compartment floor
  • Weight-optimized design
Charging and Management
  • Maximum charging power: 7.2 kW
  • Charging time (0-100%): approximately 2.5 hours
  • Integrated battery management system
  • Temperature-controlled charging
  • Supports regenerative braking energy storage

Electrical Architecture

This section provides details about the Audi S8's electrical architecture, including voltage levels, wiring, and advanced features.

Voltage Levels
  • Primary voltage level: 12 volts
  • Secondary voltage level: 48 volts
  • High-voltage system: 400 volts (for future compatibility)
  • Dual-voltage electrical architecture
  • Efficient power distribution across systems
Advanced Electrical Features
  • 48-volt belt alternator starter (BAS)
  • Electric powered compressor (EPC)
  • Regenerative braking system
  • Adaptive air suspension with electrical control
  • High-speed CAN bus communication

Component Specifications

Overview

Type
48V Mild Hybrid System
Configuration
Twin-Turbo V8 with Electric Assist
Platform
MLB Evo
Material
Lithium-Ion Battery
Location
Rear Compartment

Dimensions

Battery Capacity
0.5 kWh
System Voltage
48V
Alternator Output
2.4 kW
Starter Motor Power
3.5 kW
Wire Harness Length
3,000 feet (914.4 meters)
Fuse Box Dimensions
12 inches × 8 inches × 6 inches (304.8 mm × 203.2 mm × 152.4 mm)

Materials

Battery Cells
Lithium-Ion
Wire Harness
Copper with Teflon Insulation
Connectors
High-Temperature Nylon
Fuse Box
Aluminum Alloy

Features

Powertrain
  • Mild-Hybrid Assist
  • Start/Stop Technology
  • Regenerative Braking
  • Electric Turbocharger
infotainment
  • 10.1-inch High-Resolution Touchscreen
  • Haptic Feedback
  • Voice Command System
  • Audi Virtual Cockpit
Driver Assistance
  • Adaptive Cruise Control
  • Lane Keeping Assist
  • Traffic Jam Assist
  • 360-Degree Camera System
Lighting
  • Matrix LED Headlights
  • OLED Taillights
  • Dynamic Turn Signals
Audio
  • Bang & Olufsen Sound System
  • 23 Speakers
  • 1,920 Watts Total Output
  • 3D Sound Processing

Safety Features

Airbags
  • Dual Front Airbags
  • Side Airbags
  • Curtain Airbags
  • Knee Airbags
Structural integrity
  • High-Strength Steel Frame
  • Reinforced B-Pillars
  • Crumple Zones
  • Rigid Battery Compartment
Collision Systems
  • Multi-Collision Brake Assist
  • Electronic Stability Control (ESC)
  • Traction Control System (TCS)
  • Anti-Slip Regulation (ASR)
Post Crash
  • Automatic Emergency Calling
  • SOS Button
  • LED Hazard Lights Activation

Comfort Features

interior
  • Panoramic Sunroof
  • Four-Zone Climate Control
  • Heated and Ventilated Seats
  • Massage Function for Front Seats
Lighting
  • Ambient Lighting with 30 Color Options
  • Illuminated Door Sills
  • LED Interior Lighting
Convenience
  • Keyless Start/Stop
  • Keyless Entry with Hands-Free Trunk Release
  • Remote Start via Smartphone App
  • Digital Key for Smartphone
Seating
  • 22-Way Adjustable Front Seats
  • Memory Function for Driver and Passenger
  • Heated Rear Seats
  • Rear Seat Entertainment System

Accessories

Charging
  • Audi e-tron Charging System
  • Portable Charging Cable
  • Wallbox Charger
  • Public Charging Adapter
Connectivity
  • Audi Phone Box with Wireless Charging
  • Smartphone Interface
  • Wi-Fi Hotspot
  • Bluetooth Connectivity
Lifestyle
  • 230V Power Adapter
  • Cargo Area Power Outlet
  • Interior LED Lighting Package
  • Audi Lifestyle Accessories

Maintenance

Service interval
Every 5,000 miles (8,000 km) or 6 months
Service Items
  • Battery Health Check
  • Wire Harness Inspection
  • Software Updates
  • Fuse Box Inspection
  • Alternator Belt Replacement
Maintenance Notes
Recommended to use only Audi-approved parts and fluids for maintenance.

Warranty

New Vehicle
Miles: 50,000 miles
Years: 4 years
Coverage: Bumper-to-Bumper
Battery
Miles: 100,000 miles
Years: 8 years
Coverage: Battery Degradation
Maintenance
Miles: 10,000 miles
Years: 1 year
Coverage: Scheduled Maintenance
Roadside Assistance
Miles: Unlimited miles
Years: 4 years
Coverage: 24/7 Service
Warranty Terms
Warranty terms apply to original owner only. See dealer for details.

Production Details

Manufacturer
Audi AG
Manufacturing Process
  • Automated Assembly Line
  • Hand-Finished Components
  • Laser Welding
  • Robot-Assisted Assembly
Quality Control
inspections: Visual Inspection, Electrical System Testing, Performance Testing, Durability Testing
Certifications: ISO 9001, IATF 16949, ISO 14001
Sustainability
  • Recycled Materials in Battery Production
  • Energy-Efficient Manufacturing
  • CO2 Neutral Production
  • End-of-Life Recycling Program
Production Metrics
Annual Production: 500 units per month
Defect Rate: Less than 1% defect rate
Manufacturing Time: Approximately 20 days per unit
Quality Rating: 99.9% quality satisfaction rate

Service Information for Electrical System Service

Maintenance and service requirements specific to the electrical system of the 2019-Present Audi S8

5,000 miles
6 months
  • Battery Health Check
  • Wire Harness Inspection
  • Software Updates
  • Fuse Box Inspection
  • Alternator Belt Replacement

Recommended to use only Audi-approved parts and fluids.

15,000 miles
12 months
  • Electrical System Diagnostics
  • Connector Inspection
  • Ground Point Cleaning
  • Battery Terminal Check
  • Charging System Test

Special tools required for certain diagnostics.

30,000 miles
24 months
  • Alternator Replacement
  • Starter Motor Replacement
  • Battery Replacement
  • Main Fuse Box Inspection
  • Entire Wiring Harness Check

Critical to follow proper safety procedures when working with high-voltage systems.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the electrical system in the 2019-Present Audi S8?

The 2019-Present Audi S8 features a advanced 48V mild-hybrid electrical system, which includes an electric-powered compressor (EPC) and a lithium-ion battery. The system supports start/stop technology and energy recuperation, with a maximum power output of 12 kW. The electrical architecture includes a 12V and 48V network, with compatibility for high-power electrical accessories. The battery management system ensures optimal charging and discharging cycles, providing improved fuel efficiency and reduced emissions.

Q2

What are the maintenance requirements for the electrical system?

Regular maintenance for the electrical system includes inspecting the battery terminals and connections every 12,000 miles. The 48V lithium-ion battery should be checked every 24,000 miles, and the electric-powered compressor (EPC) should be serviced every 36,000 miles. Additionally, the vehicle's software should be updated periodically to ensure optimal performance. It is recommended to use Audi-approved diagnostic tools, such as VCDS, for system checks and updates.

Q3

How do I install or replace electrical components in the Audi S8?

Installation or replacement of electrical components should only be performed by a qualified technician. Disconnect the negative battery terminal before starting any work. Use Audi-approved tools and follow the manufacturer's guidelines for wiring and connector care. For complex components like the 48V battery or EPC, refer to the service manual for specific instructions. Always ensure proper grounding and insulation to prevent damage or electrical hazards.

Q4

How do I troubleshoot common electrical issues?

Start by checking the battery terminals and connections for corrosion or damage. Use a multimeter to test voltage and resistance in suspect circuits. Consult the vehicle's OBD-II system for fault codes using a compatible scanner. Common issues include faulty fuses, malfunctioning sensors, or software glitches. For advanced troubleshooting, use Audi-specific diagnostic tools like VCDS to access detailed system information and perform resets or calibrations.

Q5

How can I optimize the performance of the electrical system?

Optimize performance by ensuring all electrical connections are clean and secure. Regularly update the vehicle's software to take advantage of manufacturer improvements. Avoid excessive use of high-power electrical accessories to prevent strain on the system. Monitor battery health using Audi's diagnostic tools and replace the battery as recommended. For enhanced performance, consider upgrading to Audi-approved high-efficiency electrical components.

Factory Service Resources

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

Audi S8 Electrical System Service Manual

Coming Soon

Comprehensive guide covering diagnostics, maintenance, and repair procedures for the electrical system, including the 48V mild-hybrid components.

Technical Bulletin: 48V System Update

Coming Soon

Important updates and technical bulletins regarding the 48V mild-hybrid system, including software updates and diagnostic procedures.

Audi S8 Parts and Accessories Catalog

Coming Soon

Detailed catalog of genuine Audi parts and accessories for the electrical system, including batteries, sensors, and wiring components.

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.

15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 Audi Specs. All rights reserved.