Audi Audi A3 2021-present

Audi Audi A3 2021-present Electrical Specifications

Detailed technical specifications for the electrical system of the 2021-Present Audi A3, covering wiring, voltage, fuses, and component-specific electrical data.

Updated Oct 14, 2023

Electrical Specifications Overview Specifications

This document provides a comprehensive overview of the electrical specifications for the 2021-Present Audi A3. It includes detailed information about the vehicle's electrical systems, components, and performance metrics. Use this guide to understand the technical aspects of the Audi A3's electrical architecture, including battery specifications, charging capabilities, and electrical powertrain details. Navigate through the sections to find specific information, and refer to the quick reference section for key specifications.

How to Use

To search for specific information, use the search functionality by entering relevant keywords or terms in the search bar. This will help you quickly locate details about particular electrical components or systems.

Navigate through the document by exploring the major sections listed in the table of contents. Each section is divided into subsections that provide detailed technical information. Use the quick reference section for a concise overview of key specifications.

Key Specifications

▲

Battery Capacity

13.4 kWh

■

Electric Motor Power

Up to 150 kW

●

DC Fast Charging Speed

Up to 100 kW

◆

Touchscreen Display

10.1 inches

★

Wireless Charging

Optional

Available Specifications

Battery and Charging Systems

This section provides detailed information about the battery specifications, charging capabilities, and energy management systems of the 2021-Present Audi A3. It includes technical details about the battery type, capacity, and charging options.

Battery Specifications

Battery type: Lithium-ion
Battery capacity: 13.4 kWh (usable)
Battery voltage: 400 V
Battery weight: Approximately 150 kg
Battery placement: Under the rear seat and trunk

Charging Options

AC charging capability: Up to 7.4 kW
DC fast charging capability: Up to 100 kW
Charging port location: On the left rear side
Charging time (0-80%): Approximately 30 minutes (DC fast charging)
Charging time (0-100%): Approximately 4 hours (AC charging)

Energy Management

Energy recuperation system: Yes, with multiple modes
Battery thermal management: Liquid-cooled
Energy efficiency: Optimized for low consumption
Range in electric mode: Up to 68 km (WLTP)
Combined fuel economy: Up to 1.5 L/100 km (WLTP)

Electrical Powertrain

This section outlines the electrical powertrain specifications of the 2021-Present Audi A3, including details about the electric motor, power output, and performance metrics.

Electric Motor Specifications

Motor type: Permanent magnet synchronous motor
Motor power: Up to 150 kW
Motor torque: Up to 300 Nm
Motor efficiency: Optimized for high efficiency
Motor placement: Transverse-mounted
Motor cooling: Liquid-cooled

Performance Metrics

0-100 km/h acceleration: 7.0 seconds
Top speed: Up to 230 km/h (electronically limited)
Powertrain layout: Front-wheel drive (FWD)
Driving modes: Multiple modes including EV, Auto, and Sport
Regenerative braking: Yes, with adjustable levels

Interior and Exterior Lighting

This section provides details about the interior and exterior lighting systems of the 2021-Present Audi A3, including LED technology and adaptive lighting features.

Exterior Lighting

Headlight type: LED with optional matrix LED
Daytime running lights: LED
Taillight type: LED with dynamic indicators
Fog lights: LED
Adaptive lighting: Yes, with traffic sign recognition
Lighting control: Automatic with ambient light sensor

Interior Lighting

Ambient lighting: Yes, with multiple color options
Footwell lighting: LED
Door panel lighting: LED
Trunk lighting: LED
Interior light switches: Touch-sensitive
Adjustable brightness: Yes

Infotainment and Connectivity

This section covers the electrical specifications of the infotainment and connectivity systems in the 2021-Present Audi A3, including display size, software, and connectivity options.

Infotainment System

Display size: 10.1 inches
Display resolution: 1540 x 720 pixels
Operating system: MIB 3
Processor: Quad-core
Memory: 8 GB RAM
Storage: 64 GB internal storage

Connectivity Features

Wi-Fi hotspot: Yes
Bluetooth: 5.0 with aptX HD
USB ports: 2x USB-C with 45 W charging
Wireless charging: Optional
Smartphone integration: Apple CarPlay and Android Auto
Voice control: Yes, with natural language processing

Electrical Accessories and Features

This section details the electrical accessories and convenience features of the 2021-Present Audi A3, including power outlets, climate control, and driver assistance systems.

Power Outlets

12V power outlets: 2 (front and rear)
USB ports: 2x USB-C in front, 2x USB-C in rear
Power specifications: 12V DC, 150 W
Optional power outlet: 230V AC (requires adapter)
Power management: Intelligent with overload protection

Special Features

Panoramic sunroof: Optional
Heated seats: Front and rear
Ventilated seats: Optional
Heated steering wheel: Optional
Electrically adjustable seats: Yes, with memory function
Digital key: Optional

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Component Specifications

Overview

Type: 12V electrical system

Configuration: Conventional with starter motor and alternator

Platform: Volkswagen Group MQB Evo

Voltage: 12V nominal system voltage

Location: Distributed architecture with central control units

Control Unit: Central Gateway (CG) as main controller

Dimensions

Battery Length: 278 mm (10.94 in)

Battery Width: 175 mm (6.89 in)

Battery Height: 190 mm (7.48 in)

Alternator Output: 140A (1800W)

Wiring Harness Length: Approx. 3 km (1.86 miles)

Fuse Box Dimensions: 210 mm x 150 mm x 50 mm (8.27 x 5.91 x 1.97 in)

inverter Capacity: 7.2 kW

Materials

Battery: Lead-acid with enhanced flooded cells

Wiring Harness: Copper core with cross-linked polyethylene insulation

Connectors: Nickel-plated brass terminals

Fuse Box: High-temperature resistant plastic (PA6)

inverter: Aluminum heat sink with epoxy encapsulation

Features

Charging System

Smart alternator with load point shifting
Regenerative braking energy recovery
Battery management system (BMS)
Low-voltage cut-off protection

Power Management

Electronic power steering (EPS)
Electrically heated windshield
Auto-start/stop functionality
Energy-efficient LED lighting

Connectivity

CAN bus (500 kbps) and LIN bus communication
Wireless smartphone charging
Audi connect® services integration
Over-the-air (OTA) updates capability

Monitoring

Battery state of charge monitoring
Voltage real-time tracking
Thermal monitoring of electrical components
Fault code memory with diagnostics

Lighting

LED headlights with adaptive function
Matrix LED technology for high beams
Dynamic turn signals
Interior ambient lighting with 30 colors

Safety Features

Overcurrent Protection

Circuit breakers with automatic reset
Fuses with blow-out indicator
Short-circuit protection for all critical systems

Voltage Regulation

Voltage stabilizer for sensitive electronics
Surge protection for power spikes
Reverse polarity protection

Thermal Management

Temperature monitoring of battery and alternator
Cooling system integration for electric components
Thermal cutoff for overheating protection

Fault Detection

Automatic system diagnostics
Warning lights for system malfunctions
Audible alerts for critical failures

Comfort Features

Convenience

Keyless start/stop system
Electrically adjustable and heated seats
Power tailgate with hands-free opening
Automatic climate control with air quality sensor

infotainment

10.1-inch HD touchscreen display
Bang & Olufsen premium sound system
Wireless Apple CarPlay and Android Auto
Voice control system with natural language processing

Assistance

Electronically controlled parking brake
Adaptive cruise control with stop&go
Lane departure warning and assist
360-degree camera system

Lighting

Ambient lighting with customizable scenarios
Footwell illumination
Door handle lights
Trunk and glovebox lighting

Accessories

Charging

Type 2 (Mennekes) charging cable
Mode 3 charging cable for public stations
Wallbox compatibility
Portable charging box

Connectivity

Audi phone box with wireless charging
Rear USB ports with data transfer
SIM card reader for Audi connect®
Wi-Fi hotspot capability

Diagnostics

Audi Diagnostic Tool (VCDS) compatibility
OBD-II port with extended diagnostics
Battery test function
System update capability

Maintenance

Service interval: Every 12,000 miles or 12 months

Service Items

Battery terminal cleaning and check
Alternator belt inspection
Wiring harness visual inspection
Fuse box and relay check
Software updates for control units

Maintenance Notes: Use only Audi-approved parts and fluids. Follow specified torque values for battery terminals.

Warranty

Battery Warranty: Miles: 60,000 miles
Years: 3 years
Coverage: Prorated replacement

Electrical Components: Miles: 120,000 miles
Years: 10 years
Coverage: Corrosion-related failures only

High Voltage System: Miles: 100,000 miles
Years: 8 years
Coverage: Capacity guarantee at 70%

General Electrical: Miles: 60,000 miles
Years: 4 years
Coverage: Parts and labor included

Production Details

Manufacturer: Audi AG

Manufacturing Process

Robot-assisted assembly
Laser welding for precision
Automated testing and validation
EOL (End-of-Line) testing

Quality Control: inspection: 100% system functionality test
Certification: ISO/TS 16949 compliant
Testing: Environmental stress testing (EST)

Sustainability Practices

Recyclable materials used
Energy-efficient production processes
Reduced water consumption
Emission control measures

Production Metrics: Units Per Day: Over 500 units
Assembly Time: Approx. 30 hours
Quality Rating: 99.8% defect-free rate

Service Information for electrical Service

Maintenance and service requirements specific to the electrical system

12,000 miles

12 months

Inspect battery terminals and clean if necessary
Check alternator belt for wear and tension
Verify all exterior and interior lighting function
Scan for any fault codes in the electrical system
Check wiring harness connections

Essential for maintaining system reliability and preventing corrosion.

24,000 miles

24 months

Replace air filter for cabin and engine
Inspect fuses and relays for signs of wear
Check electrical connections in fuse boxes
Test battery health and charge rate
Update software for all control units

Critical for maintaining optimal performance and functionality.

60,000 miles

60 months

Inspect alternator and starter motor brushes
Replace any worn or corroded connectors
Check for any signs of wiring damage
Perform full electrical system diagnostics
Clean or replace electrical contacts as needed

Major service interval. Addressing issues here prevents costly repairs later.

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the voltage of the 2021-Present Audi A3's electrical system?

The 2021-Present Audi A3 operates on a 12-volt electrical system. The battery is a 12V AGM (Absorbent Glass Mat) type, with a typical capacity of 70 Ah and a cold cranking amperage (CCA) of 680 A.

What is the maximum alternator output for the Audi A3?

The alternator in the 2021-Present Audi A3 has a maximum output of 140 amps. This ensures sufficient power for the vehicle's electrical systems, including advanced driver-assistance systems (ADAS) and infotainment.

How do I reset the electrical system after a battery replacement?

After replacing the battery, the electrical system must be reset using Audi's diagnostic tool (ODIS). This ensures proper registration of the new battery and prevents issues with the energy management system. Failure to reset may lead to incorrect charging rates or system malfunctions.

What is the fuse rating for the Audi A3's headlights?

The low-beam and high-beam headlights in the 2021-Present Audi A3 are protected by 15-amp fuses. LED headlight variants may have different fuse ratings, so consult the owner's manual or fuse diagram for specific details.

Can I install aftermarket electrical components without voiding the warranty?

Installing non-genuine or aftermarket electrical components may void the vehicle's warranty, especially if the installation causes damage to the electrical system. Always consult an authorized Audi dealer before making modifications to ensure compliance with warranty terms.

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 A3 Electrical System Overview

Coming Soon

Detailed guide covering the electrical architecture, including wiring diagrams, fuse layouts, and component locations.

Battery Replacement and Registration Procedure

Coming Soon

Step-by-step instructions for replacing the battery and registering it using Audi's diagnostic tools.

Fuse Box Diagram and Specifications

Coming Soon

Comprehensive fuse box diagram with fuse ratings and locations for all electrical components.

Audi Energy Management System Guide

Coming Soon

Explains the energy management system, including how it optimizes battery charging and power distribution.

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