Mercedes-Benz Mercedes B-Class 2011-2018 Electrical Specifications
Explore comprehensive electrical specifications for the 2011-2018 Mercedes-Benz B-Class, including battery, alternator, starter motor, and lighting system details. Ideal for diagnostics, maintenance, and repairs.
Overview Specifications
This document provides detailed electrical specifications for the 2011-2018 Mercedes B-Class. It covers key components such as the battery, alternator, lighting systems, and infotainment. Use this guide to understand the technical aspects of the vehicle's electrical system. The 'How To' section explains how to navigate and search for specific information, while 'Sections' break down the major electrical components into subsections for easy reference.
How to Use
Use the search functionality to find specific electrical components or specifications. Enter keywords like 'battery' or 'lighting' to quickly locate relevant information. The search feature is case-insensitive and supports partial matches.
Navigate through the document using the major sections listed. Each section contains subsections with detailed technical points. Click on a subsection to expand it and view the specific items. Use the 'Quick Reference' section for a summary of key specifications.
Key Specifications
Battery Capacity
70 Ah
Alternator Output
150 A
Headlight Lumens
3200 lm
Audio Power
500 W
Navigation Screen
7 inches
Available Specifications
Battery and Charging System
This section covers the battery and charging system of the 2011-2018 Mercedes B-Class. It includes details on the battery type, capacity, and the alternator specifications.
Battery and Charging System
This section covers the battery and charging system of the 2011-2018 Mercedes B-Class. It includes details on the battery type, capacity, and the alternator specifications.
Battery Specifications
- Type: AGM (Absorbent Glass Mat)
- Capacity: 70 Ah
- Voltage: 12 V
- Cold Cranking Amps (CCA): 760 A
- Maintenance-free design
Alternator Specifications
- Type: Bosch
- Output: 150 A
- Voltage: 14 V
- Efficiency: >85%
Lighting System
This section details the lighting system of the 2011-2018 Mercedes B-Class, including headlights, taillights, and interior lighting.
Lighting System
This section details the lighting system of the 2011-2018 Mercedes B-Class, including headlights, taillights, and interior lighting.
Headlights
- Type: Bi-Xenon
- Wattage: 35 W
- Lumens: 3200 lm
- Automatic leveling
Taillights
- Type: LED
- Wattage: 5 W
- Lumens: 100 lm
- Dynamic indicators
Infotainment System
This section provides information on the infotainment system of the 2011-2018 Mercedes B-Class, including the audio system, navigation, and connectivity options.
Infotainment System
This section provides information on the infotainment system of the 2011-2018 Mercedes B-Class, including the audio system, navigation, and connectivity options.
Audio System
- Type: Harman Kardon
- Channels: 5.1
- Power Output: 500 W
- Speakers: 10
Navigation System
- Type: COMAND Online
- Screen Size: 7 inches
- Resolution: 800x480
- Voice Control
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Component Specifications
Overview
- Type
- 12V Electrical System
- Configuration
- Negative Ground
- Platform
- MFA (Modular Front Architecture)
- Material
- Copper Wiring, Aluminum Alloy Components
- Location
- Front and Rear Distribution
Dimensions
- Battery Length
- 12.5 in (318 mm)
- Battery Width
- 6.8 in (173 mm)
- Battery Height
- 7.5 in (190 mm)
- Alternator Diameter
- 5.9 in (150 mm)
- Alternator Length
- 8.3 in (210 mm)
- Wiring Harness Length
- 328 ft (100 m)
- Fuse Box Dimensions
- 6.3 x 4.7 x 2.0 in (160 x 120 x 50 mm)
Materials
- Battery Case
- Polypropylene
- Wiring
- Copper with PVC Insulation
- Alternator Housing
- Aluminum Alloy
- Fuse Box
- Thermoplastic
- Connectors
- Nickel-Plated Brass
Features
- Lighting
-
- LED Daytime Running Lights
- Adaptive Highbeam Assist
- Automatic Headlight Control
- Ambient Interior Lighting
- infotainment
-
- COMAND System with 7-inch Display
- Bluetooth Connectivity
- SD Card Reader
- USB Port
- Sensors
-
- Rain Sensor
- Light Sensor
- Parking Sensors
- Tire Pressure Monitoring
- Power Distribution
-
- Central Fuse Box
- Rear Distribution Module
- Intelligent Alternator Control
- Power Management System
- Safety Systems
-
- ABS with ESP
- Collision Prevention Assist
- Attention Assist
- Distronic Cruise Control
Safety Features
- Protection
-
- Short Circuit Protection
- Overload Protection
- Reverse Polarity Protection
- Monitoring
-
- Battery Monitoring System
- Load Management
- Energy Recovery
- Emergency
-
- Automatic Hazard Lights
- Emergency Call System
- Battery Disconnect in Crash
Comfort Features
- Climate
-
- Automatic Climate Control
- Rear Seat Ventilation
- Heated Seats
- Convenience
-
- Keyless Go
- Electric Tailgate
- Power Windows
- Audio
-
- Premium Sound System
- Voice Control
- AUX Input
- Navigation
-
- GPS Navigation
- Traffic Information
- Speed Limit Display
Accessories
- Charging
-
- USB Charger
- 12V Socket
- Wireless Charging Pad
- Lighting
-
- Interior LED Kit
- Footwell Lights
- Puddle Lights
- Connectivity
-
- Bluetooth Adapter
- Media Interface
- Smartphone Integration
Maintenance
- Service interval
-
- Battery Check every 12 months
- Alternator Belt Inspection every 30,000 miles
- Fuse Replacement as needed
- Wiring Harness Inspection every 60,000 miles
- Software Updates as available
- Notes
-
- Use only Mercedes-Benz approved batteries
- Ensure proper grounding during service
- Avoid water ingress in electrical components
Warranty
- Battery Warranty
- Years: 4Miles: 50,000Coverage: Defects in materials and workmanship
- Alternator Warranty
- Years: 3Miles: 36,000Coverage: Parts and labor
- Electrical System Warranty
- Years: 2Miles: 24,000Coverage: Manufacturing defects
- Accessory Warranty
- Years: 1Miles: 12,000Coverage: Limited to original equipment
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Automated Wiring Harness Assembly
- Robotic Component Integration
- Precision Testing
- Quality Control
- Testing: Load Testing, Environmental Testing, Durability TestingStandards: ISO 9001, ISO 14001, ISO 26262
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Production
- Reduced Emissions
- Production Metrics
- Annual Output: 150,000 unitsDefect Rate: <0.1%Lead Time: 2 weeks
Service Information for Electrical Service
Maintenance and service requirements specific to the electrical system
- Battery voltage check
- Alternator output test
- Fuse inspection
- Wiring harness visual inspection
- Software update check
Ensure all connections are clean and secure
- Alternator belt inspection
- Battery load test
- Ground connections check
- Electrical component functionality test
- Lighting system check
Replace worn alternator belts if necessary
- Complete wiring harness inspection
- Battery replacement if needed
- Alternator performance test
- Fuse box cleaning and inspection
- Diagnostic system scan
Use only genuine Mercedes-Benz parts for replacements
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the electrical specifications for the 2011-2018 Mercedes B-Class?
What are the electrical specifications for the 2011-2018 Mercedes B-Class?
The 2011-2018 Mercedes B-Class features a 12-volt electrical system with a 90-120 Ah battery, depending on the model. It supports advanced electrical components like LED lighting, infotainment systems, and power windows. Compatibility includes Bluetooth, USB, and auxiliary inputs. The alternator output ranges from 150-200 amps, ensuring reliable power for all electrical systems. Always verify specific model details in the owner's manual.
Q2 What maintenance is required for the electrical system?
What maintenance is required for the electrical system?
Regular maintenance for the electrical system includes checking the battery health, ensuring terminals are clean and tight, and inspecting wiring for wear or damage. The alternator and starter should be tested annually. Fuses and relays should be checked periodically. Scheduled maintenance intervals are outlined in the owner's manual, typically every 10,000-15,000 miles.
Q3 How do I replace the battery in a Mercedes B-Class?
How do I replace the battery in a Mercedes B-Class?
To replace the battery, first, turn off the engine and remove the key. Open the hood and locate the battery. Disconnect the negative terminal first, then the positive. Remove any securing brackets and take out the old battery. Install the new battery, secure it, and reconnect the positive terminal first, then the negative. Ensure terminals are tight and clean. Reset the vehicle's electrical system if necessary.
Q4 What should I do if my electrical system is malfunctioning?
What should I do if my electrical system is malfunctioning?
If the electrical system malfunctions, start by checking the battery voltage and connections. Inspect fuses and relays for faults. Use a diagnostic tool to scan for error codes. Common issues include dead batteries, faulty alternators, or blown fuses. Consult the owner's manual or a professional technician for specific troubleshooting steps.
Q5 How can I optimize the electrical system's performance?
How can I optimize the electrical system's performance?
To optimize performance, ensure the battery is fully charged and in good condition. Use high-quality replacement parts and accessories. Regularly clean electrical connections to prevent corrosion. Avoid overloading the system with aftermarket devices. Update the vehicle's software as recommended by Mercedes-Benz to maintain optimal electrical performance.
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 B-Class 2011-2018 Service Manual
Coming SoonComprehensive manual covering all technical aspects, including electrical system maintenance, repair procedures, and troubleshooting tips.
Technical Service Bulletin: Electrical System Updates
Coming SoonDetails recent updates and fixes for the electrical system, including software patches and component replacements.
Mercedes B-Class Parts Catalog
Coming SoonComplete catalog of genuine parts and accessories, including electrical components, with part numbers and installation guidance.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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