Mercedes-Benz Mercedes C-Class 2021-present Electrical Specifications
Explore the comprehensive electrical specifications of the 2021-Present Mercedes-Benz C-Class, including battery systems, charging capabilities, wiring diagrams, and advanced electronic features. Essential for maintenance, troubleshooting, and upgrades.
Overview Specifications
This document provides a detailed breakdown of the electrical specifications for the 2021-Present Mercedes-Benz C-Class. It covers key components such as the electrical architecture, battery systems, infotainment, and lighting. Use this guide to understand the technical aspects 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 locate specific terms or components within the document. Enter keywords like 'battery', 'infotainment', or 'lighting' to jump directly to relevant sections.
Navigate through the document by scrolling through the sections listed in the table of contents. Each section contains subsections with detailed technical points for easy reference.
Key Specifications
12V Battery Capacity
70 Ah
Hybrid Battery Capacity
13.5 kWh
MBUX Display Size
12.3 inches
Charging Time (Hybrid)
2.5 hours
Audio System Power
590 Watts
Available Specifications
Electrical Architecture
This section outlines the electrical architecture of the 2021-Present Mercedes-Benz C-Class, including the control units, wiring systems, and integration with other vehicle systems. Learn how the electrical components work together to ensure optimal performance and safety.
Electrical Architecture
This section outlines the electrical architecture of the 2021-Present Mercedes-Benz C-Class, including the control units, wiring systems, and integration with other vehicle systems. Learn how the electrical components work together to ensure optimal performance and safety.
Control Units
- Central gateway for seamless communication
- Multiple domain controllers for specific functions
- Integration with advanced driver-assistance systems (ADAS)
- Over-the-air update capability
- Redundant systems for fault tolerance
- High-speed CAN and Ethernet networks
Wiring Systems
- Lightweight and durable wiring harnesses
- Modular design for easy maintenance
- Shielded cables for noise reduction
- High-current wiring for power-intensive components
- Color-coded connectors for simplified troubleshooting
Battery Systems
This section covers the battery systems in the Mercedes-Benz C-Class, including the 12V auxiliary battery and hybrid/electric variants. Explore the specifications, charging systems, and energy management strategies.
Battery Systems
This section covers the battery systems in the Mercedes-Benz C-Class, including the 12V auxiliary battery and hybrid/electric variants. Explore the specifications, charging systems, and energy management strategies.
12V Auxiliary Battery
- AGM (Absorbent Glass Mat) technology
- High cold-cranking amps (CCA) for reliable starts
- Integrated battery management system (BMS)
- Long service life with minimal maintenance
- Compatible with start-stop functionality
Hybrid/Electric Battery
- Lithium-ion battery packs for hybrid variants
- High energy density for extended range
- Thermal management system for optimal performance
- Fast-charging capability
- Regenerative braking integration
Infotainment and Connectivity
This section details the infotainment and connectivity features of the Mercedes-Benz C-Class, including the MBUX system, audio systems, and wireless connectivity options. Discover how the vehicle integrates technology for a seamless driving experience.
Infotainment and Connectivity
This section details the infotainment and connectivity features of the Mercedes-Benz C-Class, including the MBUX system, audio systems, and wireless connectivity options. Discover how the vehicle integrates technology for a seamless driving experience.
MBUX System
- Dual high-resolution displays (12.3-inch each)
- Voice control with natural language processing
- Touchscreen, touchpad, and steering wheel controls
- Augmented reality navigation
- Personalized user profiles
Audio Systems
- Burmester surround sound system (optional)
- 13-speaker configuration
- High-fidelity audio reproduction
- Active noise cancellation
- Bluetooth and USB connectivity
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Component Specifications
Overview
- Type
- 12V Lithium-Ion Battery
- Configuration
- Mild Hybrid Electric Vehicle (MHEV)
- Platform
- MRA2 Modular Rear Architecture
- Material
- Lithium-Ion with Integrated Power Electronics
- Location
- Rear of Vehicle
Dimensions
- Battery Length
- 12.6 in (320 mm)
- Battery Width
- 8.3 in (210 mm)
- Battery Height
- 6.7 in (170 mm)
- Battery Weight
- 22.05 lbs (10 kg)
- Alternator Output
- 150A at 12V
- Starter Motor Power
- 2.2 kW
- Wiring Harness Length
- 328 ft (100 m)
Materials
- Battery Casing
- Reinforced Polypropylene
- Wiring Harness
- Copper with Silicone Insulation
- Alternator
- Aluminum Housing with Copper Windings
- Starter Motor
- High-Strength Steel with Rare Earth Magnets
Features
- Charging
-
- Integrated 48V Belt-Driven Starter Generator
- Regenerative Braking System
- Fast Charging Capability
- Energy Recovery System
- Lighting
-
- Multibeam LED Headlights
- Adaptive Highbeam Assist
- Ambient Lighting with 64 Colors
- Dynamic Turn Signals
- infotainment
-
- MBUX Multimedia System
- 12.3-inch Touchscreen Display
- Augmented Reality Navigation
- Wireless Smartphone Integration
- Safety
-
- Pre-Safe Sound System
- Active Blind Spot Assist
- Active Lane Keeping Assist
- Traffic Sign Recognition
- Comfort
-
- Heated and Ventilated Seats
- Dual-Zone Climate Control
- Wireless Charging Pad
- Keyless-Go System
Safety Features
- Battery Safety
-
- Thermal Management System
- Overcharge Protection
- Short Circuit Protection
- Wiring Safety
-
- Fire-Resistant Insulation
- Crash Detection Shutoff
- Waterproof Connectors
- System Safety
-
- Redundant Power Supply
- Emergency Power Backup
- Automatic Load Shedding
Comfort Features
- Climate Control
-
- Air Balance System
- Fragrance System
- Air Quality Sensor
- Seating
-
- Memory Function for Seats
- Massage Function
- Adjustable Lumbar Support
- Lighting
-
- Reading Lights
- Mood Lighting
- Welcome Light Function
- Audio
-
- Burmester Surround Sound System
- Noise Compensation
- 3D Sound Experience
Accessories
- Charging
-
- Portable Charger
- Wallbox Charger
- Cable Management System
- Lighting
-
- LED Interior Upgrade Kit
- Dynamic Projector Lights
- Ambient Light Strips
- infotainment
-
- Rear Seat Entertainment System
- Head-Up Display
- Digital Rearview Mirror
Maintenance
- Service interval
- Every 10,000 miles or 12 months
- Service Items
-
- Battery Health Check
- Alternator Output Test
- Wiring Harness Inspection
- Software Updates
- Charging System Diagnostics
- Lighting System Calibration
- Maintenance Notes
- Use only Mercedes-Benz approved diagnostic tools and software for maintenance.
Warranty
- Battery Warranty
- Miles: 100,000Years: 8Coverage: Capacity Retention Above 70%
- Electrical System Warranty
- Miles: 50,000Years: 4Coverage: Repair or Replacement
- Lighting Warranty
- Miles: 30,000Years: 3Coverage: LED Module Replacement
- infotainment Warranty
- Miles: 50,000Years: 4Coverage: Software and Hardware
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Automated Battery Assembly
- Precision Wiring Harness Production
- Robotic Component Integration
- Quality Control
- Testing: High-Voltage Safety Tests, Environmental Stress Tests, Vibration and Durability TestsCertifications: ISO 9001, ISO 26262 (Functional Safety), IEC 62133 (Battery Safety)
- Sustainability Practices
-
- Recyclable Battery Materials
- Energy-Efficient Production
- Zero-Waste Manufacturing
- Production Metrics
- Annual Output: 500,000 UnitsDefect Rate: Less than 0.1%Energy Consumption: 15 kWh per Unit
Service Information for Electrical System Service
Maintenance and service requirements specific to the electrical system
- Battery Health Check
- Alternator Output Test
- Wiring Harness Inspection
- Software Updates
- Charging System Diagnostics
Ensure all connections are clean and secure.
- Battery Load Test
- Starter Motor Inspection
- Grounding System Check
- Lighting System Calibration
- Infotainment System Update
Use diagnostic tools to verify system integrity.
- Battery Replacement if Necessary
- Alternator Replacement if Necessary
- Wiring Harness Replacement if Necessary
- Comprehensive System Diagnostics
- Performance Testing
Critical to replace components with OEM parts only.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the compatibility requirements for the electrical system in the 2021-Present Mercedes C-Class?
What are the compatibility requirements for the electrical system in the 2021-Present Mercedes C-Class?
The electrical system in the 2021-Present Mercedes C-Class is designed to integrate seamlessly with the vehicle's advanced MBUX (Mercedes-Benz User Experience) system, including compatibility with 12V and 48V electrical architectures. It supports features like adaptive lighting, advanced driver-assistance systems (ADAS), and electric power steering. Ensure all aftermarket components are MB-Approved to maintain compatibility and avoid system malfunctions.
Q2 What are the maintenance requirements for the electrical components in the Mercedes C-Class?
What are the maintenance requirements for the electrical components in the Mercedes C-Class?
Regular maintenance of the electrical system includes inspecting the battery health, checking wiring harnesses for wear, and ensuring software updates are applied via Mercedes-Benz diagnostics tools. The 12V battery should be tested annually, and the 48V mild hybrid system requires professional servicing every 20,000 miles. Follow the manufacturer's maintenance schedule to prevent issues.
Q3 How do I replace the battery in the 2021-Present Mercedes C-Class?
How do I replace the battery in the 2021-Present Mercedes C-Class?
To replace the 12V battery, first, disconnect the negative terminal, then the positive terminal. Remove the battery hold-down clamp and carefully lift the battery out. Install the new battery, secure it with the clamp, and reconnect the terminals in reverse order. For the 48V battery, consult a certified Mercedes-Benz technician due to its complexity and safety requirements.
Q4 What should I do if the electrical system in my Mercedes C-Class malfunctions?
What should I do if the electrical system in my Mercedes C-Class malfunctions?
If you experience electrical issues, first check the battery connections and fuses. Use the MBUX system to diagnose error codes or visit a Mercedes-Benz service center for a professional scan. Common issues include software glitches, which can often be resolved with a system reset or software update. Avoid DIY repairs on complex systems.
Q5 How can I optimize the performance of the electrical system in my Mercedes C-Class?
How can I optimize the performance of the electrical system in my Mercedes C-Class?
To optimize performance, keep the software updated via Mercedes-Benz dealerships or authorized service centers. Use the ECO start-stop feature to reduce battery drain and ensure the alternator is functioning correctly. Regularly clean battery terminals and use MB-Approved accessories to maintain system efficiency 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.
Mercedes C-Class Electrical System Service Manual
Coming SoonDetailed guide covering the electrical system, including wiring diagrams, component locations, and diagnostic procedures.
Technical Service Bulletin: Electrical System Updates
Coming SoonInformation on recent updates, recalls, and improvements for the Mercedes C-Class electrical system.
Mercedes C-Class Parts and Accessories Catalog
Coming SoonComprehensive catalog of MB-Approved electrical components and accessories for the C-Class.
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
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
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.