Mercedes-Benz Mercedes C-Class 2014-2021 9G-TRONIC Transmission Specifications
This document provides a detailed overview of the 9G-Tronic transmission specifications for the 2014-2021 Mercedes-Benz C-Class. It includes technical details such as gear ratios, torque capacity, shift patterns, and fluid requirements. The purpose of this document is to assist automotive enthusiasts, technicians, and owners in understanding the transmission's design, performance capabilities, and maintenance needs. It also serves as a valuable resource for diagnosing issues, performing upgrades, and ensuring compatibility with other vehicle systems. By offering precise and comprehensive information, this guide enhances the reader's ability to maintain, repair, or optimize the 9G-Tronic transmission for improved vehicle performance and longevity.
Overview Specifications
This document provides detailed specifications and technical information about the 9G-TRONIC transmission used in Mercedes-Benz C-Class vehicles from 2014 to 2021. It is designed for automotive enthusiasts, technicians, and anyone interested in understanding the advanced features and performance of this transmission system. Use the search and navigation instructions to quickly find relevant sections and details.
How to Use
Use the search functionality by entering keywords related to the 9G-TRONIC transmission, such as 'gear ratios' or 'torque capacity.' This will help you locate specific information efficiently.
Navigate through the document using the section titles and subsections. Each section is organized to provide a comprehensive overview of the transmission's features, performance, and technical details.
Key Specifications
Number of Gears
9
Torque Capacity
1000 Nm
Weight
86 kg
Length
520 mm
Fuel Efficiency Improvement
Up to 6%
Available Specifications
Performance Features
This section highlights the key performance features of the 9G-TRONIC transmission, including its smooth shifting, fuel efficiency, and adaptability to various driving conditions.
Performance Features
This section highlights the key performance features of the 9G-TRONIC transmission, including its smooth shifting, fuel efficiency, and adaptability to various driving conditions.
Smooth Shifting
- 9-speed automatic transmission for seamless gear changes
- Reduced shift times for improved responsiveness
- Adaptive shift strategy for optimal performance
- Enhanced comfort during acceleration and deceleration
Fuel Efficiency
- Optimized gear ratios for reduced fuel consumption
- Eco mode for improved mileage
- Start-stop system integration
- Reduced internal friction for higher efficiency
Technical Specifications
This section provides detailed technical specifications of the 9G-TRONIC transmission, including its torque capacity, gear ratios, and dimensions.
Technical Specifications
This section provides detailed technical specifications of the 9G-TRONIC transmission, including its torque capacity, gear ratios, and dimensions.
Torque Capacity
- Maximum torque capacity of 1000 Nm
- Designed for high-performance engines
- Robust construction for durability
- Supports both petrol and diesel engines
Gear Ratios
- 1st gear ratio: 5.35:1
- 9th gear ratio: 0.60:1
- Wide spread of ratios for versatility
- Optimized for both city and highway driving
Advanced Technologies
This section explores the advanced technologies integrated into the 9G-TRONIC transmission, such as its electronic control system and adaptive learning capabilities.
Advanced Technologies
This section explores the advanced technologies integrated into the 9G-TRONIC transmission, such as its electronic control system and adaptive learning capabilities.
Electronic Control System
- State-of-the-art transmission control unit
- Real-time monitoring of driving conditions
- Precise control of shift points
- Integration with vehicle's safety systems
Adaptive Learning
- Learns driver behavior for personalized shifting
- Adjusts to driving style over time
- Enhances performance in varying conditions
- Improves overall driving experience
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Transmission Specifications
Overview
- Type
- Automatic Transmission
- Configuration
- 9-Speed
- Platform
- Mercedes-Benz MRA
- Material
- Aluminum Alloy
- Location
- Integrated with Engine
Dimensions
- Length
- 28.5 inches / 724 mm
- Width
- 22 inches / 559 mm
- Height
- 16 inches / 406 mm
- Weight
- 187 lbs / 85 kg
- input Shaft Diameter
- 1.2 inches / 30 mm
- Output Shaft Diameter
- 1.5 inches / 38 mm
- Fluid Capacity
- 7.5 quarts / 7.1 liters
Materials
- Housing
- Aluminum Alloy
- Gears
- Case-Hardened Steel
- Clutches
- Composite Friction Material
- Seals
- Synthetic Rubber
Features
- Performance
-
- Smooth gear transitions
- Quick shift response
- Adaptive shift mapping
- Efficiency
-
- Reduced fuel consumption
- Optimized gear ratios
- Eco mode integration
- Technology
-
- Integrated torque converter
- Electronic control unit
- Direct shift capability
- Driving Modes
-
- Comfort mode
- Sport mode
- Manual mode
- Connectivity
-
- CAN bus integration
- Diagnostic port access
- Software update capability
Safety Features
- Fail Safe
-
- Emergency limp-home mode
- Overheat protection
- Electronic fault detection
- Stability
-
- Traction control integration
- Hill start assist
- Downhill speed regulation
Comfort Features
- Noise Reduction
-
- Sound dampening materials
- Precision gear meshing
- Vibration isolation
- Smoothness
-
- Seamless gear shifts
- Adaptive clutch control
- Reduced shift shock
- Customization
-
- Driver-selectable modes
- Personalized shift patterns
- Adaptive learning algorithms
Accessories
- Tools
-
- Transmission fluid dipstick
- Diagnostic scanner
- Service manual
- Fluids
-
- Synthetic transmission fluid
- Seal conditioner
- Lubricant additive
- Replacement Parts
-
- Gasket set
- Filter kit
- Clutch pack
Maintenance
- Service interval
- Every 60,000 miles
- Service Items
-
- Fluid change
- Filter replacement
- Seal inspection
- Clutch adjustment
- Software update
- Maintenance Notes
- Use only approved synthetic transmission fluid.
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Parts and labor
- Powertrain
- Miles: 100,000Years: 7Coverage: Transmission components
- Corrosion
- Miles: UnlimitedYears: 12Coverage: Rust perforation
- Roadside Assistance
- Miles: UnlimitedYears: 4Coverage: 24/7 support
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser welding
- Quality Control
- inspection: 100% component testingStandards: ISO 9001 certifiedValidation: Durability and performance testing
- Sustainability
-
- Recyclable materials
- Energy-efficient production
- Waste reduction initiatives
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: < 0.1%Lead Time: 2 weeks
Service Information for 9g tronic transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level
- Check for leaks
- Update transmission software
- Inspect seals and gaskets
Fluid level should be checked when the transmission is at operating temperature.
- Replace transmission fluid
- Replace transmission filter
- Inspect clutch pack
- Check electronic control unit
Use only manufacturer-approved transmission fluid.
- Perform complete transmission flush
- Replace clutch pack if necessary
- Inspect and adjust shift linkage
- Conduct performance testing
Major service may require specialized equipment.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 9G-Tronic transmission compatible with all 2014-2021 Mercedes C-Class models?
Is the 9G-Tronic transmission compatible with all 2014-2021 Mercedes C-Class models?
The 9G-Tronic transmission is compatible with most 2014-2021 Mercedes C-Class models, including the C300, C350e, and AMG C43. However, compatibility may vary depending on the engine type and drivetrain configuration. Always verify with your vehicle's VIN or consult a Mercedes-Benz dealer to confirm compatibility before installation or upgrades.
Q2 What are the maintenance requirements for the 9G-Tronic transmission?
What are the maintenance requirements for the 9G-Tronic transmission?
The 9G-Tronic transmission requires regular maintenance, including fluid and filter changes every 60,000 to 80,000 miles. Inspect for leaks, wear, and software updates during routine service. Use only Mercedes-Benz-approved transmission fluid (ATF 134 FE) to ensure optimal performance and longevity. Neglecting maintenance can lead to shifting issues or transmission failure.
Q3 How do I replace the 9G-Tronic transmission in a Mercedes C-Class?
How do I replace the 9G-Tronic transmission in a Mercedes C-Class?
Replacing the 9G-Tronic transmission involves disconnecting the battery, removing the transmission pan, draining the fluid, and detaching the transmission mounts and wiring harnesses. Use a transmission jack to safely remove and install the unit. Follow the service manual for torque specifications and alignment. Professional installation is recommended due to the complexity and precision required.
Q4 What should I do if my 9G-Tronic transmission is not shifting smoothly?
What should I do if my 9G-Tronic transmission is not shifting smoothly?
If your 9G-Tronic transmission is not shifting smoothly, check the transmission fluid level and condition. Low or degraded fluid can cause shifting issues. Inspect for error codes using a diagnostic tool. Common solutions include updating the transmission software, replacing the fluid and filter, or addressing mechanical wear. Consult a certified technician for advanced diagnostics.
Q5 How can I optimize the performance of my 9G-Tronic transmission?
How can I optimize the performance of my 9G-Tronic transmission?
To optimize performance, ensure regular maintenance with approved fluids and filters. Use the transmission's adaptive learning feature by driving in various conditions to improve shift patterns. Avoid aggressive driving and excessive load to reduce wear. Consider software updates from Mercedes-Benz to enhance shifting logic and efficiency.
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 9G-Tronic Transmission Service Manual
Coming SoonDetailed guide covering installation, maintenance, and troubleshooting for the 9G-Tronic transmission in 2014-2021 C-Class models.
Technical Service Bulletin: 9G-Tronic Software Update
Coming SoonInformation on the latest software updates for the 9G-Tronic transmission, including performance improvements and bug fixes.
Mercedes-Benz 9G-Tronic Parts Catalog
Coming SoonComprehensive catalog of genuine parts and accessories for the 9G-Tronic transmission, including part numbers and compatibility details.
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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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