Mercedes-Benz Mercedes CLK 2002-2009 7G-TRONIC Transmission Specifications
This document provides detailed technical specifications for the 7G-Tronic automatic transmission used in the 2002-2009 Mercedes CLK models. It covers gear ratios, torque capacity, fluid requirements, and maintenance intervals, offering valuable insights for owners, technicians, and enthusiasts. The 7G-Tronic transmission, known for its smooth shifting and advanced engineering, is a key component of the CLK's performance and reliability. This guide serves as a comprehensive resource for understanding the transmission's design, operation, and maintenance needs, ensuring optimal performance and longevity.
Overview Specifications
This document provides detailed specifications and technical information about the 7G-TRONIC transmission used in the 2002-2009 Mercedes-Benz CLK. It is designed to assist users in understanding the transmission's features, functionality, and maintenance requirements. Use the search and navigation instructions to quickly find relevant information. The document is divided into sections covering key aspects of the transmission, including design, performance, and maintenance.
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Key Specifications
Gear Count
7
Torque Capacity
737 Nm
Weight
86 kg
Shift Speed
100 ms
Fuel Efficiency Improvement
Up to 7%
Available Specifications
Design and Architecture
This section covers the design principles and architectural features of the 7G-TRONIC transmission. It includes details on the transmission's construction, components, and innovative technologies.
Design and Architecture
This section covers the design principles and architectural features of the 7G-TRONIC transmission. It includes details on the transmission's construction, components, and innovative technologies.
Transmission Layout
- 7-speed automatic transmission with torque converter
- Compact and lightweight design for improved efficiency
- Integrated control unit for seamless operation
- Planetary gearset configuration for smooth shifting
Key Components
- High-strength alloy housing for durability
- Electrohydraulic valve body for precise control
- Wet multi-plate clutches for enhanced performance
- Advanced lubrication system for reduced wear
Performance and Efficiency
This section highlights the performance characteristics and efficiency improvements of the 7G-TRONIC transmission. It includes data on acceleration, fuel economy, and driving dynamics.
Performance and Efficiency
This section highlights the performance characteristics and efficiency improvements of the 7G-TRONIC transmission. It includes data on acceleration, fuel economy, and driving dynamics.
Shifting Performance
- Ultra-fast gear changes for improved acceleration
- Adaptive shift logic for optimized driving conditions
- Manual shift mode for enhanced driver control
- Smooth transitions between gears for comfort
Fuel Efficiency
- Reduced internal friction for better fuel economy
- Eco mode for optimized fuel consumption
- Start-stop functionality for lower emissions
- Efficient torque converter lock-up for reduced energy loss
Maintenance and Durability
This section provides guidelines for maintaining the 7G-TRONIC transmission and ensuring its long-term durability. It includes recommendations for servicing and common troubleshooting tips.
Maintenance and Durability
This section provides guidelines for maintaining the 7G-TRONIC transmission and ensuring its long-term durability. It includes recommendations for servicing and common troubleshooting tips.
Service Intervals
- Regular fluid changes every 60,000 miles
- Inspection of seals and gaskets during service
- Diagnostic checks for early fault detection
- Replacement of wear components as needed
Common Issues
- Delayed shifting due to worn clutches
- Fluid leaks from aging seals
- Error codes related to valve body malfunctions
- Noise during operation indicating potential bearing wear
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Transmission Specifications
Overview
- Type
- Automatic Transmission
- Configuration
- 7-speed
- Platform
- Mercedes-Benz CLK (2002-2009)
- Material
- Aluminum casing with steel internals
- Location
- Longitudinal, rear-wheel-drive configuration
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 22.8 inches (579 mm)
- Height
- 18.3 inches (465 mm)
- Weight
- 187 lbs (85 kg)
- input Shaft Diameter
- 1.2 inches (30.5 mm)
- Output Shaft Diameter
- 1.4 inches (35.6 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Viton rubber
- Sensors
- Stainless steel and plastic
Features
- Shifting
-
- Adaptive shift logic
- Manual mode with paddle shifters
- Smooth gear transitions
- Kick-down function
- Efficiency
-
- Reduced internal friction
- Optimized gear ratios
- Eco mode for fuel savings
- Torque converter lock-up clutch
- Performance
-
- Quick shift response
- Sport mode for aggressive shifting
- Dynamic gear selection
- High torque capacity
- Durability
-
- Reinforced internal components
- High-temperature resistance
- Sealed against contaminants
- Long service life
- integration
-
- CAN bus communication
- Compatible with ESP and ABS systems
- Integrated diagnostics
- Plug-and-play installation
Safety Features
- Fail-Safes
-
- Limp-home mode
- Overheat protection
- Emergency neutral mode
- Monitoring
-
- Real-time fluid level monitoring
- Gear position sensors
- Temperature sensors
Comfort Features
- Noise Reduction
-
- Precision-engineered gears
- Vibration dampening mounts
- Quiet operation in all gears
- Smoothness
-
- Seamless gear changes
- Adaptive torque converter
- Low-speed creep function
- Customization
-
- Driver-selectable modes
- Personalized shift patterns
- Adaptive learning
Accessories
- Upgrades
-
- Performance torque converter
- Enhanced cooling kit
- Shift kit for faster shifts
- Tools
-
- Transmission fluid pump
- Diagnostic scanner
- Installation toolkit
- Fluids
-
- Mercedes-Benz ATF 134
- Synthetic transmission fluid
- Additives for extended life
Maintenance
- Service interval
- Every 40,000 miles or 48 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Clutch pack wear check
- Sensor calibration
- Software updates
- Notes
- Use only approved fluids and follow manufacturer guidelines.
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Parts and labor
- Powertrain
- Miles: 100,000Years: 7Coverage: Transmission internals
- Extended
- Miles: 150,000Years: 10Coverage: Limited to major components
- Terms
- Warranty void if improper fluids or unauthorized modifications are used.
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser welding
- Quality Control
- Testing: Durability testing, Performance benchmarking, Environmental stress testsStandards: ISO 9001 certified
- Sustainability
-
- Recyclable materials
- Energy-efficient production
- Waste reduction initiatives
- Production Metrics
- Units Per Year: 500,000Defect Rate: 0.01%Lead Time: 6 weeks
Service Information for 7g tronic transmission Service
Maintenance and service requirements specific to this component
- Replace transmission fluid
- Inspect and replace filter
- Check for leaks
- Test shift performance
- Update transmission software
Use only Mercedes-Benz ATF 134 fluid.
- Inspect clutch packs
- Check torque converter
- Test all sensors
- Replace seals if necessary
- Perform diagnostic scan
Special tools required for clutch inspection.
- Overhaul transmission internals
- Replace worn gears
- Inspect and replace solenoids
- Test all electronic components
- Perform full system calibration
Major service requires certified technician.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 7G-Tronic transmission compatible with all 2002-2009 Mercedes CLK models?
Is the 7G-Tronic transmission compatible with all 2002-2009 Mercedes CLK models?
The 7G-Tronic transmission is compatible with most 2002-2009 Mercedes CLK models, specifically the CLK 320, CLK 500, and CLK 55 AMG. However, compatibility may vary depending on the engine type and model year. Always verify with your vehicle's VIN or consult a Mercedes-Benz dealer to ensure proper fitment and functionality.
Q2 What are the maintenance requirements for the 7G-Tronic transmission?
What are the maintenance requirements for the 7G-Tronic transmission?
The 7G-Tronic transmission requires regular maintenance, including fluid and filter changes every 40,000 to 60,000 miles. Use only Mercedes-Benz-approved transmission fluid (ATF 134) to ensure optimal performance. Additionally, inspect for leaks, wear, and software updates during routine service intervals to prevent potential issues.
Q3 How do I replace the 7G-Tronic transmission in a 2002-2009 Mercedes CLK?
How do I replace the 7G-Tronic transmission in a 2002-2009 Mercedes CLK?
Replacing the 7G-Tronic transmission involves several steps: disconnect the battery, remove the transmission pan and torque converter bolts, detach the driveshaft, and unbolt the transmission mounts. Carefully lower the transmission using a jack and install the new unit in reverse order. Ensure proper alignment and torque specifications, and refill with approved ATF fluid.
Q4 What should I do if my 7G-Tronic transmission is not shifting smoothly?
What should I do if my 7G-Tronic transmission is not shifting smoothly?
If your 7G-Tronic transmission is not shifting smoothly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause shifting issues. Next, inspect for error codes using a diagnostic scanner. Common solutions include fluid replacement, software updates, or repairing/replacing faulty solenoids or sensors.
Q5 How can I optimize the performance of my 7G-Tronic transmission?
How can I optimize the performance of my 7G-Tronic transmission?
To optimize performance, ensure regular maintenance, including fluid changes and software updates. Use high-quality ATF 134 fluid and avoid aggressive driving habits. Consider installing a transmission cooler for enhanced durability, especially in high-performance or high-temperature conditions. Regularly check for error codes and address any issues promptly.
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 7G-Tronic Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the 7G-Tronic transmission in 2002-2009 Mercedes CLK models.
7G-Tronic Technical Service Bulletin (TSB)
Coming SoonLatest updates and fixes for common issues with the 7G-Tronic transmission, including software updates and part replacements.
7G-Tronic Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts for the 7G-Tronic transmission, including filters, fluids, and repair kits.
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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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