Mercedes-Benz Mercedes S-Class 2021-present 9G-TRONIC Transmission Specifications
This document provides a detailed overview of the 9G-Tronic transmission specifications for the 2021-Present Mercedes-Benz S-Class. The 9G-Tronic is a 9-speed automatic transmission designed to enhance driving comfort, fuel efficiency, and performance. It features advanced engineering, including a wide gear ratio spread, smooth shift transitions, and adaptive shift programs tailored to driving conditions. The specifications cover gear ratios, torque capacity, dimensions, weight, and fluid requirements. This information is invaluable for automotive enthusiasts, technicians, and owners seeking to understand the technical aspects of their vehicle's transmission system. It also serves as a reference for maintenance, diagnostics, and potential upgrades, ensuring optimal performance and longevity of the transmission.
Overview Specifications
This document provides detailed specifications and technical information about the 9G-TRONIC transmission used in the 2021-Present Mercedes-Benz S-Class. It is designed to assist users in understanding the features, performance, and maintenance of this advanced automatic transmission. The document is organized into sections for easy navigation, with subsections breaking down key aspects of the transmission. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search function to locate specific terms or topics within the document. Enter keywords related to the 9G-TRONIC transmission, such as 'gear ratios' or 'shift speed,' to find relevant sections quickly. This is especially useful for pinpointing technical details or troubleshooting tips.
Navigate through the document by scrolling through the sections or using the table of contents. Each major section is labeled clearly, and subsections provide detailed breakdowns of specific topics. Use the 'Quick Reference' section for an at-a-glance overview of key specifications.
Key Specifications
Number of Gears
9
Shift Speed
100 ms
Weight
86 kg
Gear Ratio Spread
9.15:1
Fuel Efficiency Improvement
Up to 7%
Available Specifications
Transmission Design
This section covers the design philosophy and structural components of the 9G-TRONIC transmission. It highlights the engineering innovations that contribute to its smooth performance, efficiency, and durability. Learn about the materials, construction, and layout of this advanced automatic transmission.
Transmission Design
This section covers the design philosophy and structural components of the 9G-TRONIC transmission. It highlights the engineering innovations that contribute to its smooth performance, efficiency, and durability. Learn about the materials, construction, and layout of this advanced automatic transmission.
Compact and Lightweight Design
- Aluminum alloy housing reduces weight
- Compact design for better integration
- Optimized gear arrangement for efficiency
- Reduced internal friction for smoother operation
Gear Configuration
- 9-speed automatic transmission
- Wide gear ratio spread for versatility
- Adaptive shift logic for seamless transitions
- Precision-engineered gear components
Performance Features
Explore the performance-enhancing features of the 9G-TRONIC transmission. This section details how the transmission optimizes power delivery, improves fuel efficiency, and enhances driving dynamics. Discover the technologies that make it a leader in its class.
Performance Features
Explore the performance-enhancing features of the 9G-TRONIC transmission. This section details how the transmission optimizes power delivery, improves fuel efficiency, and enhances driving dynamics. Discover the technologies that make it a leader in its class.
Shift Speed and Smoothness
- Millisecond-level shift times
- Adaptive shifting for varying conditions
- Smooth gear transitions for comfort
- Sport mode for quicker response
Fuel Efficiency
- Optimized gear ratios for lower RPMs
- Eco mode for reduced fuel consumption
- Start-stop functionality integration
- Reduced energy loss in transmission
Maintenance and Durability
This section provides insights into the maintenance requirements and durability of the 9G-TRONIC transmission. Learn about recommended service intervals, common maintenance tasks, and the robust design that ensures long-term reliability.
Maintenance and Durability
This section provides insights into the maintenance requirements and durability of the 9G-TRONIC transmission. Learn about recommended service intervals, common maintenance tasks, and the robust design that ensures long-term reliability.
Service Intervals
- Regular fluid checks every 30,000 miles
- Transmission fluid replacement every 60,000 miles
- Diagnostic checks during routine maintenance
- Software updates for optimal performance
Durability Features
- High-strength materials for longevity
- Sealed design to prevent contamination
- Thermal management system for cooling
- Rigorous testing for reliability
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Transmission Specifications
Overview
- Type
- 9-speed automatic
- Configuration
- Longitudinal
- Platform
- Mercedes-Benz MRA
- Material
- Aluminum alloy casing
- Location
- Rear-wheel drive with optional 4MATIC
Dimensions
- Length
- 28.7 in (730 mm)
- Width
- 21.3 in (540 mm)
- Height
- 17.9 in (455 mm)
- Weight
- 187.4 lbs (85 kg)
- input Shaft Diameter
- 1.2 in (30 mm)
- Output Shaft Diameter
- 1.4 in (35 mm)
- Fluid Capacity
- 7.4 qt (7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Case-hardened steel
- Clutch Packs
- Carbon fiber reinforced
- Seals
- Synthetic rubber
- Fluid
- Mercedes-Benz ATF 134
Features
- Performance
-
- Adaptive shift programming
- Eco start/stop function
- Downshift rev matching
- Manual shift mode via paddle shifters
- Efficiency
-
- Wide gear ratio spread (9.15:1)
- Reduced internal friction
- Optimized torque converter
- Low viscosity transmission fluid
- integration
-
- Seamless integration with Mercedes-Benz Drive Pilot
- Compatible with hybrid powertrains
- Direct link to Mercedes-Benz MBUX system
- Supports dynamic select driving modes
- Durability
-
- Reinforced gear sets
- High-temperature resistant materials
- Extended service intervals
- Robust cooling system
- Safety
-
- Fail-safe mode
- Integrated temperature monitoring
- Anti-rollback feature
- Hill start assist
Safety Features
- Monitoring
-
- Real-time transmission temperature
- Gear position sensor
- Fluid pressure monitoring
- Protection
-
- Overheat protection
- Overload prevention
- Emergency neutral mode
- Assistance
-
- Hill start assist
- Anti-rollback feature
- Adaptive cruise control integration
Comfort Features
- Smoothness
-
- Seamless gear shifts
- Reduced vibration
- Quiet operation
- Convenience
-
- Auto start/stop function
- Paddle shifters
- Adaptive shift patterns
- Customization
-
- Dynamic select driving modes
- Manual override
- Sport mode enhancements
- Climate
-
- Integrated transmission cooler
- Efficient heat dissipation
- Cold weather optimization
Accessories
- Upgrades
-
- Performance transmission fluid
- Enhanced cooling system
- Sport-tuned shift programming
- Tools
-
- Transmission fluid pump
- Diagnostic scanner
- Torque converter tools
- Parts
-
- Replacement clutch packs
- Seal kit
- Filter kit
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Transmission fluid change
- Filter replacement
- Seal inspection
- Clutch pack wear check
- Diagnostic scan
- Torque converter inspection
- Maintenance Notes
- Use only Mercedes-Benz approved transmission fluid for optimal performance.
Warranty
- Basic
- 4 years or 50,000 miles
- Powertrain
- 5 years or 60,000 miles
- Corrosion
- 7 years or 100,000 miles
- Emissions
- 2 years or 24,000 miles
- Warranty Terms
- Covers defects in materials and workmanship under normal use.
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser welding
- Quality control testing
- Quality Control
- Testing: Dynamic load testinginspection: 100% component inspectionCertification: ISO 9001 compliant
- Sustainability
-
- Recycled aluminum usage
- Low-emission production
- Energy-efficient manufacturing
- Production Metrics
- Annual Output: 500,000 unitsProduction Time: 12 hours per unitDefect Rate: Less than 0.1%
Service Information for 9g tronic transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level
- Check for leaks
- Diagnostic scan for error codes
- Inspect seals and gaskets
Use only Mercedes-Benz approved fluids and tools.
- Replace transmission fluid
- Replace transmission filter
- Inspect clutch packs
- Check torque converter operation
- Perform adaptive shift calibration
Ensure proper disposal of old transmission fluid.
- Complete transmission overhaul
- Replace clutch packs if necessary
- Inspect and replace seals
- Test transmission cooling system
- Perform full diagnostic scan
Major service requires specialized tools and equipment.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 9G-TRONIC transmission compatible with other Mercedes models?
Is the 9G-TRONIC transmission compatible with other Mercedes models?
The 9G-TRONIC transmission is compatible with various Mercedes-Benz models, including the 2021-Present S-Class, E-Class, and GLE. It is designed to work seamlessly with Mercedes' M256 engine and other powertrains. However, compatibility depends on the specific model year and engine configuration. Always consult the vehicle's technical documentation or a certified Mercedes technician to ensure compatibility.
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 to ensure optimal performance. Mercedes-Benz recommends a transmission fluid and filter change every 60,000 to 80,000 miles, depending on driving conditions. Additionally, periodic software updates and inspections of the transmission system are advised. Adhering to the maintenance schedule in the owner's manual is crucial for longevity and smooth operation.
Q3 How is the 9G-TRONIC transmission installed or replaced?
How is the 9G-TRONIC transmission installed or replaced?
Replacing or installing the 9G-TRONIC transmission involves several steps: first, the vehicle is lifted and the transmission fluid drained. Next, the old transmission is disconnected from the engine and drivetrain. The new unit is aligned, bolted into place, and reconnected. Finally, the system is refilled with transmission fluid and tested for proper operation. This process requires specialized tools and expertise, so it should be performed by a certified technician.
Q4 How can I troubleshoot issues with the 9G-TRONIC transmission?
How can I troubleshoot issues with the 9G-TRONIC transmission?
Common issues with the 9G-TRONIC transmission include shifting delays, unusual noises, or warning lights. Begin by checking the transmission fluid level and condition. If the fluid is low or contaminated, replace it. Next, use a diagnostic tool to scan for error codes. If no issues are found, inspect the transmission mounts and linkages. For persistent problems, consult a Mercedes-Benz service center for professional diagnostics and repair.
Q5 How can I optimize the performance of the 9G-TRONIC transmission?
How can I optimize the performance of the 9G-TRONIC transmission?
To optimize the 9G-TRONIC transmission, ensure regular maintenance, including fluid changes and software updates. Use Mercedes-Benz-approved transmission fluid for best results. Avoid aggressive driving habits, such as rapid acceleration or hard braking, to reduce wear. Additionally, enabling the ECO mode can improve fuel efficiency and reduce strain on the transmission. Regularly inspect the system for leaks or damage to maintain peak 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-Benz 9G-TRONIC Service Manual
Coming SoonThis comprehensive manual provides detailed instructions for servicing and maintaining the 9G-TRONIC transmission, including fluid changes, diagnostics, and repair procedures.
9G-TRONIC Technical Service Bulletin (TSB)
Coming SoonThis bulletin outlines common issues, software updates, and solutions for the 9G-TRONIC transmission, ensuring optimal performance and reliability.
Mercedes-Benz Transmission Parts Catalog
Coming SoonThis catalog lists all OEM parts and accessories for the 9G-TRONIC transmission, including filters, gaskets, and fluid specifications.
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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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