Mercedes-Benz Mercedes B-Class 2011-2018 7G-DCT Transmission Specifications
This document provides detailed technical specifications for the 7G-DCT (7-Speed Dual Clutch Transmission) used in the 2011-2018 Mercedes B-Class. It covers key aspects such as gear ratios, torque capacity, fluid requirements, and shift patterns. Designed to assist technicians, enthusiasts, and owners, this guide is invaluable for understanding the transmission's performance characteristics, maintenance needs, and compatibility with different models. Whether you're performing routine service, diagnosing issues, or exploring upgrades, this comprehensive resource ensures accurate information to enhance your vehicle's performance and longevity.
Overview Specifications
This document provides detailed specifications and technical insights into the 7G-DCT (7-speed Dual Clutch Transmission) used in the 2011-2018 Mercedes B-Class. It covers key features, operational details, and maintenance tips to help users understand and optimize the performance of this advanced transmission system. Use this guide to navigate through sections, search for specific information, and access quick reference points for essential details.
How to Use
Use the search function by entering keywords related to the 7G-DCT transmission. This will help you quickly locate specific technical details, features, or troubleshooting tips.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is organized to provide detailed information on different aspects of the 7G-DCT transmission.
Key Specifications
Transmission Type
7-speed Dual Clutch
Gear Ratios
7 forward, 1 reverse
Shift Time
<100 ms
Fuel Efficiency
Up to 15% improvement
Clutch Type
Dual wet clutch
Available Specifications
Transmission Design and Features
This section delves into the design principles and innovative features of the 7G-DCT transmission, highlighting its dual clutch system, gear ratios, and integration with the Mercedes B-Class powertrain.
Transmission Design and Features
This section delves into the design principles and innovative features of the 7G-DCT transmission, highlighting its dual clutch system, gear ratios, and integration with the Mercedes B-Class powertrain.
Dual Clutch System
- Utilizes two separate clutches for odd and even gears
- Enables seamless gear shifts without power interruption
- Enhanced fuel efficiency and performance
- Reduced wear and tear compared to traditional automatics
Gear Ratios
- Seven forward gears optimized for performance and efficiency
- Wide range of ratios for urban and highway driving
- Adaptive shifting based on driving conditions
- Sport mode for quicker gear changes
Operational Performance
Explore the operational characteristics of the 7G-DCT transmission, including its responsiveness, efficiency, and adaptability to different driving scenarios.
Operational Performance
Explore the operational characteristics of the 7G-DCT transmission, including its responsiveness, efficiency, and adaptability to different driving scenarios.
Shift Dynamics
- Millisecond shift times for smooth transitions
- Adaptive learning for driver behavior
- Downshift rev-matching for sporty driving
- Comfort mode for relaxed driving experience
Fuel Efficiency
- Optimized gear changes for reduced fuel consumption
- Eco mode for maximum efficiency
- Start-stop functionality in city driving
- Reduced CO2 emissions
Maintenance and Care
Learn about the maintenance requirements and care tips for the 7G-DCT transmission to ensure longevity and optimal performance.
Maintenance and Care
Learn about the maintenance requirements and care tips for the 7G-DCT transmission to ensure longevity and optimal performance.
Regular Maintenance
- Periodic fluid checks and replacements
- Inspection of clutch wear and tear
- Software updates for transmission control
- Diagnostics for early issue detection
Troubleshooting Tips
- Addressing delayed or rough shifts
- Identifying and resolving clutch slippage
- Resetting adaptive transmission settings
- Consulting a Mercedes specialist for complex issues
Search Specifications
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Transmission Specifications
Overview
- Type
- 7-speed dual-clutch automatic
- Configuration
- Transverse-mounted
- Platform
- MFA (Modular Front Architecture)
- Material
- Aluminum casing
- Location
- Front-wheel drive
Dimensions
- Length
- 22.5 in (571.5 mm)
- Width
- 18.9 in (480 mm)
- Height
- 13.2 in (335 mm)
- Weight
- 187 lbs (85 kg)
- input Shaft Diameter
- 1.2 in (30 mm)
- Output Shaft Diameter
- 1.1 in (28 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- High-strength steel
- Clutch Packs
- Composite friction materials
- Seals
- Viton rubber
Features
- Performance
-
- Quick shift times (under 200ms)
- Adaptive shift patterns
- Sport mode for dynamic driving
- Efficiency
-
- Reduced internal friction
- Optimized gear ratios
- Start-stop system compatibility
- Control
-
- Manual shift mode
- Paddle shifters
- ECO mode for fuel efficiency
- integration
-
- Seamless integration with Mercedes-Benz electronics
- Compatibility with 4MATIC all-wheel drive
- Adaptive transmission software
Safety Features
- Mechanical Safeguards
-
- Overheat protection
- Torque limitation
- Electronic Protections
-
- Fail-safe mode
- Software-based shift logic
Comfort Features
- Drive Modes
-
- Comfort mode
- Sport mode
- Manual mode
- Smoothness
-
- Smooth gear transitions
- Reduced vibration
Accessories
- Upgrades
-
- Performance software
- Aluminum shift paddles
- Maintenance Kits
-
- Transmission fluid kit
- Filter kit
- Tools
-
- Transmission fluid pump
- Diagnostic scanner
Maintenance
- Service interval
- Every 40,000 miles or 48 months
- Service Items
-
- Transmission fluid change
- Filter replacement
- Software update
- Clutch wear inspection
- Seal inspection
- Maintenance Notes
- Use only Mercedes-Benz approved transmission fluids
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Manufacturer defects
- Powertrain
- Miles: 100,000Years: 7Coverage: Transmission components
- Corrosion
- Miles: UnlimitedYears: 4Coverage: Rust perforation
- Emissions
- Miles: 70,000Years: 8Coverage: Emission-related components
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision machining
- Automated assembly
- Quality testing
- Quality Control
- Testing: Durability testing, Performance testingStandards: ISO 9001, ISO 14001
- Sustainability Practices
-
- Recycled materials
- Energy-efficient production
- Production Metrics
- Annual Capacity: 500,000 unitsProduction Time: 4 hours per unit
Service Information for 7g dct transmission Service
Maintenance and service requirements specific to this component
- Transmission fluid replacement
- Filter replacement
- Software update
- Clutch wear inspection
Use only Mercedes-Benz approved fluids and parts
- Comprehensive transmission inspection
- Seal replacement
- Fluid and filter replacement
- Software update
Special diagnostic tools required for comprehensive inspection
- Major transmission overhaul
- Clutch pack replacement
- Complete fluid and filter replacement
- Software reset
Recommended to be performed by authorized Mercedes-Benz service center
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 7G-DCT transmission compatible with all 2011-2018 Mercedes B-Class models?
Is the 7G-DCT transmission compatible with all 2011-2018 Mercedes B-Class models?
The 7G-DCT (7-speed Dual Clutch Transmission) is compatible with specific 2011-2018 Mercedes B-Class models, particularly those with petrol or diesel engines. However, compatibility depends on the engine type and model year. For precise details, consult the vehicle's technical specifications or contact an authorized Mercedes-Benz dealer. Always verify the transmission code and engine pairing to ensure proper compatibility.
Q2 What are the maintenance requirements for the 7G-DCT transmission?
What are the maintenance requirements for the 7G-DCT transmission?
The 7G-DCT transmission requires regular maintenance to ensure optimal performance. This includes checking and replacing the transmission fluid every 40,000 to 60,000 miles, inspecting the clutch system, and updating the transmission control software as needed. Follow the manufacturer's maintenance schedule and use only approved fluids and parts to avoid damage and maintain warranty coverage.
Q3 How do I install or replace the 7G-DCT transmission in a Mercedes B-Class?
How do I install or replace the 7G-DCT transmission in a Mercedes B-Class?
Replacing the 7G-DCT transmission involves several steps: disconnect the battery, remove the transmission mount, detach the driveshaft, and unbolt the transmission from the engine. Ensure proper alignment during installation and reconnect all components securely. Use a torque wrench for bolts and refill with the correct transmission fluid. For precise instructions, refer to the official service manual or seek professional assistance.
Q4 What should I do if my 7G-DCT transmission is malfunctioning?
What should I do if my 7G-DCT transmission is malfunctioning?
If your 7G-DCT transmission is malfunctioning, start by checking the transmission fluid level and quality. Inspect for error codes using a diagnostic tool and reset the system if necessary. Common issues include rough shifting or slipping gears, often caused by software glitches or worn components. If problems persist, consult a certified technician for further diagnosis and repair.
Q5 How can I optimize the performance of my 7G-DCT transmission?
How can I optimize the performance of my 7G-DCT transmission?
To optimize the 7G-DCT transmission, ensure regular maintenance, including fluid changes and software updates. Use high-quality transmission fluid and avoid aggressive driving habits. Upgrading to the latest software version can improve shift responsiveness and efficiency. Additionally, consider installing a performance tuning module for enhanced control and smoother gear transitions.
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 B-Class 7G-DCT Service Manual
Coming SoonThis manual provides detailed instructions for servicing and repairing the 7G-DCT transmission in 2011-2018 Mercedes B-Class models.
Technical Service Bulletin for 7G-DCT Transmission
Coming SoonThis bulletin addresses common issues and updates for the 7G-DCT transmission, including software fixes and maintenance recommendations.
Mercedes-Benz 7G-DCT Parts Catalog
Coming SoonThis catalog lists all compatible parts and accessories for the 7G-DCT transmission, including clutch kits, fluids, and seals.
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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.
- 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.
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