Mercedes-Benz Mercedes GLS 2019-present

Mercedes-Benz Mercedes GLS 2019-present Electrical Specifications

Explore the comprehensive electrical specifications for the 2019-Present Mercedes-Benz GLS. This guide covers battery, alternator, wiring, lighting, and onboard electronics, providing essential details for maintenance, repair, and upgrades.

Updated Jan 23, 2025

Overview Specifications

This document provides detailed electrical specifications for the 2019-Present Mercedes-Benz GLS. It covers key aspects such as battery systems, charging capabilities, electrical components, and advanced features. Use this guide to understand the vehicle's electrical architecture, locate specific technical details, and ensure proper maintenance and operation. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.

How to Use

Use the search function to find specific terms or components. Enter keywords like 'battery', 'charging', or 'lighting' to quickly locate relevant information.

Navigate through sections using the table of contents. Each section is divided into subsections with detailed technical points. Use the quick reference table for a summary of key specifications.

Key Specifications

▲

Battery Capacity

20 kWh

■

Charging Time (Level 2)

4-6 hours

●

Infotainment Display

Dual 12.3-inch

◆

Ambient Lighting Colors

64 options

★

Driver Assistance Features

10+ systems

Available Specifications

Battery System

This section covers the battery specifications, including capacity, type, and maintenance requirements for the Mercedes-Benz GLS. It also includes details on the battery management system and its role in optimizing performance and longevity.

Battery Specifications

Lithium-ion battery with 48V architecture
Battery capacity: 20 kWh (varies by model)
Integrated battery management system (BMS)
Regenerative braking for energy recovery
Optional hybrid models with larger battery packs
Maintenance-free design with long lifespan

Charging Capabilities

Standard charging time: 4-6 hours (Level 2 charger)
Fast charging support for hybrid models
Onboard charger with 7.4 kW capacity
Compatible with public charging networks
Charging port located on the rear left side
Smart charging scheduling via Mercedes Me app

Electrical Components

This section details the electrical components of the GLS, including lighting systems, infotainment, and driver assistance features. It highlights the integration of advanced technologies for enhanced safety and convenience.

Lighting System

Full LED headlights with adaptive high beam
Ambient lighting with 64 color options
Dynamic LED taillights with animation
Automatic headlight leveling system
Optional MULTIBEAM LED technology
Rain-sensing windshield wipers with lighting integration

Infotainment and Connectivity

MBUX (Mercedes-Benz User Experience) system
Dual 12.3-inch displays for instrument cluster and infotainment
Wireless Apple CarPlay and Android Auto
Voice control with natural language processing
Wireless charging pad for smartphones
Burmester surround sound system with 13 speakers

Advanced Electrical Features

This section explores advanced electrical features, including driver assistance systems, energy efficiency technologies, and integration with smart devices. It highlights how these features enhance the driving experience.

Driver Assistance Systems

Active Distance Assist DISTRONIC
Active Steering Assist
Active Lane Change Assist
Active Blind Spot Assist
Traffic Sign Recognition
360-degree camera system with parking assist

Energy Efficiency

Eco Start/Stop function
Energy recovery during deceleration
Aerodynamic optimization for reduced drag
Hybrid models with electric-only driving mode
Energy consumption monitoring via MBUX
Thermal management system for battery efficiency

Search Specifications

Search by specification name, value, or description

Component Specifications

Overview

Type: 12V Lithium-Ion Battery

Configuration: Dual Battery System

Platform: MHA (Modular High Architecture)

Material: Lithium-Ion Cells with Aluminum Housing

Location: Under Rear Passenger Seat

Dimensions

Battery Length: 12.6 in (320 mm)

Battery Width: 8.3 in (210 mm)

Battery Height: 6.7 in (170 mm)

Battery Weight: 33.1 lbs (15 kg)

Alternator Output: 220A

Wiring Harness Length: 328 ft (100 m)

Fuse Box Dimensions: 6.3 x 4.7 x 2.4 in (160 x 120 x 60 mm)

Materials

Battery Casing: Reinforced Aluminum

Wiring Harness: Copper with High-Temperature Insulation

Connectors: Gold-Plated Brass

Fuse Box: Thermoplastic with Flame Retardant

Alternator: Aluminum Alloy with Copper Windings

Features

Lighting

Adaptive LED Headlights
Ambient Lighting with 64 Colors
Automatic High Beam Assist
Dynamic Light Sequencing

infotainment

MBUX Dual 12.3-inch Displays
Touchscreen Controls
Voice Command System
Wireless Charging Pad

Safety

Active Distance Assist DISTRONIC
Active Steering Assist
Active Lane Keeping Assist
Pre-Safe Sound System

Climate Control

4-Zone Automatic Climate Control
Heated and Ventilated Seats
Air Balance System with Fragrance
Remote Start Climate Preconditioning

Power Management

Energy Recovery System
Intelligent Alternator Control
Battery Monitoring System
Eco Start/Stop Function

Safety Features

Electrical Protection

Overcurrent Protection
Short Circuit Protection
Overvoltage Protection

Emergency Features

Automatic Emergency Call (eCall)
Battery Disconnect in Crash
Emergency Lighting System

Fire Safety

Flame Retardant Wiring
Thermal Fuses
Battery Temperature Monitoring

Comfort Features

Seat Adjustment

Power Adjustable Seats with Memory
Massage Function
Heated Armrests

Audio System

Burmester Surround Sound System
Active Noise Cancellation
HD Radio with SiriusXM

Connectivity

Apple CarPlay and Android Auto
Bluetooth Connectivity
Wi-Fi Hotspot

Convenience

Power Tailgate
Keyless Go
Hands-Free Access

Accessories

Charging

Portable Charger
Wallbox Charger
Solar Charger

Lighting

LED Interior Light Package
Projector Door Lights
Ambient Light Strips

infotainment

Rear Seat Entertainment System
Wireless Headphones
Tablet Holders

Maintenance

Service interval: 10,000 miles or 12 months

Service Items

Battery Health Check
Alternator Output Test
Wiring Harness Inspection
Fuse Box Inspection
Software Updates

Maintenance Notes: Regularly check battery connections and clean terminals. Avoid deep discharges.

Warranty

Battery Warranty: Miles: 100,000
Years: 8
Coverage: Defects and Capacity Retention

Electrical Warranty: Miles: 50,000
Years: 4
Coverage: Wiring and Connectors

Alternator Warranty: Miles: 50,000
Years: 4
Coverage: Defects and Performance

infotainment Warranty: Miles: 50,000
Years: 4
Coverage: Hardware and Software

Production Details

Manufacturer: Mercedes-Benz AG

Manufacturing Process

Automated Battery Assembly
Precision Wiring Harness Production
Quality Control Testing

Quality Control: Battery Testing: 100% Capacity and Load Testing
Wiring Testing: Continuity and Insulation Testing
Final Inspection: Full System Integration Test

Sustainability Practices

Recycled Materials in Wiring
Energy-Efficient Production
Battery Recycling Program

Production Metrics: Annual Output: 500,000 Units
Defect Rate: 0.01%
Energy Usage: 10 kWh per Unit

Service Information for Electrical Service

Maintenance and service requirements specific to the electrical system

10,000

Battery Health Check
Alternator Output Test
Wiring Harness Inspection
Fuse Box Inspection
Software Updates

Ensure all connections are secure and free of corrosion.

20,000

Battery Load Test
Alternator Belt Inspection
Ground Connections Check
Infotainment System Diagnostics
Lighting System Check

Use diagnostic tools for comprehensive system checks.

50,000

Battery Replacement if Needed
Alternator Replacement if Needed
Wiring Harness Replacement if Needed
Full System Diagnostics
Performance Testing

Critical to replace components showing signs of wear to prevent system failure.

Frequently Asked Questions

Find answers to common questions about torque specifications

What are the electrical system specifications for the 2019-Present Mercedes GLS?

The 2019-Present Mercedes GLS features a 48-volt mild hybrid electrical system, supporting advanced features like EQ Boost, which provides an additional 21 hp and 184 lb-ft of torque. The system includes a lithium-ion battery, regenerative braking, and compatibility with Mercedes-Benz's MBUX infotainment system. It supports wireless charging, multiple USB-C ports, and integrates seamlessly with the vehicle's advanced driver-assistance systems (ADAS).

What are the maintenance requirements for the GLS electrical system?

The GLS electrical system requires regular inspections of the 48-volt battery, wiring, and connectors. Check for software updates via Mercedes Me Connect or at authorized service centers. Inspect the alternator and regenerative braking system every 20,000 miles. Replace the 12-volt auxiliary battery every 3-5 years. Ensure proper charging of the hybrid system and avoid exposing electrical components to extreme temperatures.

How do I replace the 48-volt battery in the Mercedes GLS?

Replacing the 48-volt battery requires professional tools and expertise. Disconnect the negative terminal of the 12-volt battery first. Remove the underbody panel to access the 48-volt battery. Disconnect the high-voltage connectors and mounting bolts. Install the new battery, reconnect the connectors, and secure it with bolts. Reconnect the 12-volt battery and perform a system reset using Mercedes-Benz diagnostic software.

What should I do if the GLS electrical system malfunctions?

If the electrical system malfunctions, check for error messages on the MBUX display. Inspect fuses and connections for damage. Use the Mercedes Me Connect app to run diagnostics or visit an authorized service center. Common issues include software glitches, which can often be resolved with a system reset or software update. Avoid DIY repairs on high-voltage components.

How can I optimize the performance of the GLS electrical system?

To optimize performance, keep the 48-volt battery charged by driving regularly. Use ECO mode to maximize regenerative braking efficiency. Update the MBUX system and ADAS software regularly. Avoid overloading the electrical system with aftermarket accessories. Schedule routine maintenance to ensure all components are functioning optimally and replace worn parts promptly.

Factory Service Resources

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

Mercedes GLS 2019-Present Service Manual

Coming Soon

Comprehensive guide covering electrical system maintenance, troubleshooting, and repair procedures for the GLS.

Technical Service Bulletin: 48V System Updates

Coming Soon

Latest updates and fixes for the 48-volt mild hybrid system in the GLS, including software patches and performance enhancements.

GLS Electrical Parts and Accessories Catalog

Coming Soon

Detailed catalog of OEM electrical components, including batteries, wiring harnesses, and infotainment parts for the GLS.

About the Author

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