Mercedes-Benz Mercedes CLS 2018-present

Mercedes-Benz Mercedes CLS 2018-present Electrical Specifications

Explore the detailed electrical specifications for the 2018-Present Mercedes-Benz CLS, including battery, alternator, wiring, lighting, and onboard electronics. Essential for diagnostics, maintenance, and upgrades.

Updated Jan 23, 2025

Overview Specifications

This document provides detailed electrical specifications for the 2018-Present Mercedes-Benz CLS. It covers key aspects such as battery systems, charging capabilities, electrical components, and advanced features. Use this guide to understand the technical details of the vehicle's electrical systems, locate specific information, and reference key specifications quickly. The document is organized into sections for easy navigation and includes a quick reference table for essential details.

How to Use

Use the search function to find specific terms or components within the document. Enter keywords related to the electrical system, such as 'battery capacity' or 'charging time,' to quickly locate relevant information.

Navigate through the document using the section titles and subsections. Each section is organized by major electrical topics, with detailed points listed under each subsection. Use the quick reference table for a summary of key specifications.

Key Specifications

▲

Battery Capacity

13.5 kWh

■

Motor Power

245 kW

●

Charging Time (AC)

2 hours

◆

Torque

500 Nm

★

Infotainment Display

12.3-inch

Available Specifications

Battery and Charging System

This section covers the battery specifications, charging capabilities, and related technologies in the Mercedes-Benz CLS. It includes details on battery capacity, charging times, and compatibility with charging networks.

Battery Specifications

Lithium-ion battery with a capacity of 13.5 kWh
Voltage rating of 400V
Battery weight: 120 kg
Designed for high energy density and long lifespan
Thermal management system for optimal performance
Regenerative braking system to recharge the battery

Charging Capabilities

AC charging: 7.4 kW, full charge in 2 hours
DC fast charging: 50 kW, 80% charge in 30 minutes
Compatible with Type 2 and CCS charging connectors
Integrated charging cable storage
Smart charging with Mercedes Me Connect app

Electrical Components

This section details the electrical components and systems in the Mercedes-Benz CLS, including the motor, inverter, and onboard electronics. It highlights the integration of advanced technologies for efficiency and performance.

Electric Motor

Permanent magnet synchronous motor
Power output: 245 kW (328 hp)
Torque: 500 Nm
Efficiency rating of 95%
Compact and lightweight design
Integrated cooling system

Onboard Electronics

MBUX (Mercedes-Benz User Experience) infotainment system
12.3-inch dual digital displays
Voice control with natural language processing
Wireless smartphone integration (Apple CarPlay, Android Auto)
Advanced driver-assistance systems (ADAS)
Energy consumption monitoring

Advanced Electrical Features

This section explores the advanced electrical features of the Mercedes-Benz CLS, including lighting systems, connectivity, and driver-assistance technologies. It highlights innovations that enhance safety, comfort, and convenience.

Lighting Systems

Multibeam LED headlights with adaptive high beam
Ambient lighting with 64 color options
Dynamic turn signals
Automatic headlight adjustment
Energy-efficient LED technology
Welcome lighting feature

Connectivity and Safety

4G LTE connectivity with Wi-Fi hotspot
Over-the-air software updates
360-degree camera system
Active Distance Assist DISTRONIC
Active Steering Assist
Pre-Safe Sound for accident preparation

Search Specifications

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Component Specifications

Overview

Type: 12V Lithium-Ion Battery

Configuration: Mild Hybrid System (EQ Boost)

Platform: MRA (Modular Rear Architecture)

Material: High-Strength Steel Housing

Location: Rear of Vehicle

Dimensions

Battery Length: 12.6 in (320 mm)

Battery Width: 7.1 in (180 mm)

Battery Height: 6.3 in (160 mm)

Battery Weight: 22.05 lbs (10 kg)

Alternator Output: 150A

Starter Motor Power: 2.2 kW

Wiring Harness Length: 328 ft (100 m)

Materials

Battery Casing: Reinforced Polypropylene

Wiring Harness: Copper with PVC Insulation

Alternator: Aluminum Housing with Copper Windings

Starter Motor: High-Temperature Resistant Alloy

Features

Charging System

Intelligent Alternator Control
Recuperative Braking
ECO Start/Stop Function
Battery Management System

Lighting

Multibeam LED Headlights
Adaptive Highbeam Assist
Ambient Lighting with 64 Colors
Dynamic Turn Signals

infotainment

MBUX (Mercedes-Benz User Experience)
12.3-inch Touchscreen Display
Voice Control with Natural Language Processing
Wireless Smartphone Integration

Safety Systems

Active Brake Assist
Active Lane Keeping Assist
PRE-SAFE Sound
Attention Assist

Comfort

Keyless-Go
Remote Engine Start
Heated Steering Wheel
Air Balance Cabin Air Purification

Safety Features

Electrical Protection

Overvoltage Protection
Short Circuit Protection
Thermal Runaway Prevention

Emergency Systems

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

Comfort Features

Climate Control

THERMOTRONIC Automatic Climate Control
Rear Seat Climate Control
Heated and Ventilated Seats

Lighting

Adaptive Interior Lighting
Reading Lights in Rear
Puddle Lights with Logo Projection

Convenience

Wireless Charging Pad
USB-C Ports
Power-Adjustable Seats with Memory

Accessories

Charging

Portable Charging Cable
Wallbox Charger
Emergency Jump Starter

Lighting

LED Interior Light Package
Dynamic Projector Headlights
Ambient Lighting Upgrade

infotainment

Burmester High-End 3D Sound System
Rear Seat Entertainment System
Augmented Reality Navigation

Maintenance

Service interval: Every 10,000 miles or 12 months

Service Items

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

Maintenance Notes: Use only Mercedes-Benz approved diagnostic tools for electrical system checks.

Warranty

Battery Warranty: Miles: 100,000
Years: 8
Coverage: Capacity Retention Above 70%

Electrical System Warranty: Miles: 50,000
Years: 4
Coverage: Repair or Replacement of Defective Components

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

Roadside Assistance: Miles: Unlimited
Years: 4
Coverage: 24/7 Emergency Electrical System Support

Production Details

Manufacturer: Mercedes-Benz AG

Manufacturing Process

Automated Battery Assembly
Precision Wiring Harness Production
Robotic Component Integration

Quality Control: Testing: High-Voltage Stress Testing, Thermal Cycling Tests, Vibration Resistance Testing
Certifications: ISO 9001, ISO 26262 (Functional Safety)

Sustainability Practices

Recyclable Battery Materials
Energy-Efficient Production
Lead-Free Wiring

Production Metrics: Annual Output: 150,000 Units
Defect Rate: < 0.1%
Energy Consumption: 15 kWh per Unit

Service Information for Electrical System Service

Maintenance and service requirements specific to the electrical system

10,000

Battery Health Diagnostic
Alternator Output Check
Wiring Harness Inspection
Software Update Verification
Fuse and Relay Condition Check

Use Mercedes-Benz STAR Diagnosis System for accurate readings.

20,000

Battery Terminal Cleaning
Ground Connection Check
Charging System Load Test
Lighting System Alignment Check
Infotainment System Diagnostics

Ensure all electrical connections are corrosion-free.

50,000

Battery Replacement if Necessary
Alternator Belt Inspection
Starter Motor Performance Test
Complete Wiring Harness Check
Electrical System Overhaul

Replace battery if capacity falls below 70% of original specification.

Frequently Asked Questions

Find answers to common questions about torque specifications

What are the electrical system specifications for the 2018-Present Mercedes CLS?

The 2018-Present Mercedes CLS features a 48-volt electrical system, supporting advanced features like EQ Boost for mild hybrid functionality. It includes a 12-volt auxiliary battery and a 48-volt lithium-ion battery. The system is compatible with Mercedes-Benz diagnostic tools and software updates. Always refer to the vehicle's VIN for specific compatibility details, as configurations may vary by model year and region.

What are the maintenance requirements for the electrical system in the Mercedes CLS?

The electrical system requires regular inspections every 10,000 miles or annually. Key maintenance tasks include checking the 48-volt and 12-volt batteries for charge levels and wear, inspecting wiring harnesses for damage, and updating software via Mercedes-Benz diagnostic tools. Battery replacements are recommended every 4-5 years, depending on usage and environmental conditions.

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

To replace the 48-volt battery, first, disconnect the 12-volt auxiliary battery to prevent electrical shorts. Locate the 48-volt battery in the engine bay, remove the protective cover, and disconnect the high-voltage connectors. Use insulated tools to avoid shocks. Install the new battery, reconnect the connectors, and secure the cover. Reconnect the 12-volt battery and perform a system reset using Mercedes-Benz diagnostic software.

What should I do if the electrical system in my Mercedes CLS malfunctions?

If the electrical system malfunctions, first check for error codes using a Mercedes-Benz diagnostic tool. Common issues include low battery voltage, faulty wiring, or software glitches. Reset the system by disconnecting the 12-volt battery for 10 minutes. If the issue persists, inspect fuses, wiring, and connectors for damage. For persistent problems, consult a certified Mercedes-Benz technician.

How can I optimize the performance of the electrical system in my Mercedes CLS?

To optimize performance, ensure regular software updates via Mercedes-Benz diagnostic tools. Keep the 48-volt and 12-volt batteries fully charged and replace them as needed. Minimize electrical load by turning off unused systems. Use high-quality components for replacements and avoid aftermarket modifications that may strain the system. Regularly inspect wiring and connectors for wear or corrosion.

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-Benz CLS Electrical System Service Manual

Coming Soon

This manual provides detailed instructions for servicing the electrical system, including wiring diagrams, component locations, and diagnostic procedures.

Technical Service Bulletin: 48-Volt Battery System Update

Coming Soon

This bulletin outlines software updates and troubleshooting steps for the 48-volt battery system in the 2018-Present Mercedes CLS.

Mercedes-Benz CLS Parts and Accessories Catalog

Coming Soon

This catalog lists genuine parts and accessories for the electrical system, including batteries, wiring harnesses, and diagnostic tools.

About the Author

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