Mercedes-Benz Mercedes SLK 1996-2004

Mercedes-Benz Mercedes SLK 1996-2004 5G-TRONIC Transmission Specifications

This document provides detailed technical specifications for the 5G-Tronic automatic transmission used in the 1996-2004 Mercedes SLK models. The 5G-Tronic, also known as the 722.6 transmission, is a five-speed automatic gearbox renowned for its reliability and smooth performance. This guide covers key aspects such as gear ratios, torque capacity, fluid requirements, and maintenance intervals, offering valuable insights for owners, technicians, and enthusiasts. Understanding these specifications is essential for proper maintenance, troubleshooting, and performance upgrades. Whether you're diagnosing transmission issues, planning a rebuild, or seeking to enhance your SLK's performance, this resource serves as a comprehensive reference to ensure optimal operation and longevity of the 5G-Tronic transmission.

Updated Jan 24, 2025

Overview Specifications

This document provides detailed specifications and technical information about the 5G-Tronic transmission used in the 1996-2004 Mercedes SLK. It is designed to assist enthusiasts, technicians, and owners in understanding the transmission's features, performance, and maintenance requirements. Use the search and navigation instructions to quickly find relevant information. The document is organized into major sections, each focusing on a specific aspect of the 5G-Tronic transmission.

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Key Specifications

▲

Transmission Type

5-speed automatic

■

Maximum Torque

400 Nm

●

Weight

85 kg

◆

Efficiency

92%

★

Shift Response Time

0.2 seconds

Available Specifications

Transmission Overview

This section provides a general overview of the 5G-Tronic transmission, including its design, development, and key features. It also covers the transmission's integration with the Mercedes SLK and its impact on the vehicle's performance.

Design and Development

Developed by Mercedes-Benz in the mid-1990s
First introduced in the 1996 SLK model
Five-speed automatic transmission
Electronically controlled hydraulic system
Designed for smooth and efficient gear shifts
Enhanced durability and reliability

Key Features

Adaptive shift logic for optimized performance
Manual shift mode for driver control
Compact design for easy integration
Low maintenance requirements
Improved fuel efficiency
Reduced noise and vibration

Technical Specifications

This section details the technical specifications of the 5G-Tronic transmission, including its dimensions, weight, and performance metrics. It also covers the transmission's compatibility with different engines and drivetrain configurations.

Dimensions and Weight

Length: 600 mm
Width: 400 mm
Height: 300 mm
Weight: 85 kg
Compact design for space efficiency
Lightweight for improved vehicle dynamics

Performance Metrics

Maximum torque capacity: 400 Nm
Gear ratios: 3.59, 2.19, 1.41, 1.00, 0.83
Final drive ratio: 3.07
Shift response time: 0.2 seconds
Efficiency: 92%
Compatible with V6 and inline-4 engines

Maintenance and Service

This section provides guidance on the maintenance and service of the 5G-Tronic transmission. It covers routine checks, common issues, and recommended service intervals to ensure optimal performance and longevity.

Routine Checks

Check transmission fluid level every 10,000 km
Inspect for leaks and damage
Monitor shift quality and responsiveness
Ensure proper cooling system function
Check for error codes using diagnostic tools
Inspect mounts and linkages for wear

Common Issues

Slipping gears due to worn clutch packs
Delayed shifting caused by solenoid issues
Transmission fluid contamination
Overheating due to inadequate cooling
Error codes related to sensor failures
Noise during shifting indicating internal wear

Search Specifications

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Transmission Specifications

Overview

Type: 5-speed automatic

Configuration: Longitudinal

Platform: Mercedes-Benz SLK (R170)

Material: Aluminum and steel composite

Location: Rear-wheel drive

Dimensions

Length: 28.7 inches (729 mm)

Width: 23.6 inches (600 mm)

Height: 18.9 inches (480 mm)

Weight: 187.4 lbs (85 kg)

input Shaft Diameter: 1.18 inches (30 mm)

Output Shaft Diameter: 1.38 inches (35 mm)

Fluid Capacity: 7.4 quarts (7 liters)

Materials

Housing: Aluminum alloy

Gears: Hardened steel

Clutch Packs: Friction material with steel plates

input Shaft: Chrome-molybdenum steel

Features

Shift Quality

Smooth gear transitions
Adaptive shift patterns
Manual mode override

Performance

Wide gear ratio spread
Quick response to throttle input
Efficient torque conversion

Control

Electronic control unit (ECU)
CAN bus integration
Sport and comfort modes

Durability

Hardened components
Heat-resistant materials
Sealed against contaminants

Efficiency

Reduced internal friction
Optimized fluid dynamics
Low power loss

Safety Features

Fail-Safe

Limp-home mode
Overheat protection
Pressure monitoring

integration

ABS compatibility
ESP integration
Cruise control support

Comfort Features

Noise Reduction

Precision gear meshing
Vibration damping
Insulated housing

Driving Modes

Sport mode
Comfort mode
Winter mode

Smoothness

Adaptive shift logic
Torque converter lockup
Precise throttle response

Accessories

Upgrades

Performance torque converter
Shift kit
Transmission cooler

Tools

Diagnostic scanner
Fluid exchange kit
Torque wrench

Maintenance

Filter kit
Fluid pan gasket
Seal kit

Maintenance

Service interval: 30,000 miles or 24 months

Service Items

Fluid and filter replacement
Inspect for leaks
Check shift quality
Test electronic controls
Lubricate linkages

Notes: Use only approved transmission fluid for optimal performance.

Warranty

Basic: Miles: 50,000
Years: 4
Coverage: Parts and labor

Powertrain: Miles: 100,000
Years: 7
Coverage: Major components

Corrosion: Miles: unlimited
Years: 10
Coverage: Rust perforation

Terms: Warranty void if unapproved fluids or modifications are used.

Production Details

Manufacturer: Mercedes-Benz

Manufacturing Process

Precision CNC machining
Heat treatment of gears
Automated assembly

Quality Control: Testing: Durability and performance
Standards: ISO 9001
inspection: 100% component verification

Sustainability

Recycled materials
Energy-efficient production
Waste reduction

Production Metrics: Units Per Year: 150,000
Defect Rate: 0.01%
Lead Time: 2 weeks

Service Information for 5g tronic transmission Service

Maintenance and service requirements specific to this component

30,000

Replace transmission fluid
Replace filter
Inspect for leaks
Check shift quality
Test electronic controls

Use only approved transmission fluid for optimal performance.

60,000

Inspect clutch packs
Check torque converter
Test pressure sensors
Lubricate linkages
Verify ECU software

Special tools required for clutch inspection.

100,000

Overhaul transmission
Replace worn components
Test all systems
Verify fluid dynamics
Check for software updates

Major service requires specialized equipment and expertise.

Common Questions

Find answers to common questions about torque specifications

Is the 5G-Tronic transmission compatible with all 1996-2004 Mercedes SLK models?

The 5G-Tronic transmission is compatible with most 1996-2004 Mercedes SLK models, specifically the SLK 230 Kompressor, SLK 320, and SLK 32 AMG. However, compatibility may vary based on engine type and specific model year. It is essential to verify the transmission code (722.6) and consult your vehicle's technical specifications or a Mercedes-Benz dealer to ensure proper fitment.

What are the maintenance requirements for the 5G-Tronic transmission?

The 5G-Tronic transmission requires regular maintenance to ensure optimal performance. This includes changing the transmission fluid and filter every 40,000 to 60,000 miles, inspecting the transmission for leaks, and ensuring the valve body and solenoids are functioning correctly. Additionally, periodic software updates may be necessary to address shifting issues or improve performance. Regular diagnostics using a Mercedes-Benz-specific scan tool are also recommended.

How do I replace the 5G-Tronic transmission in a 1996-2004 Mercedes SLK?

Replacing the 5G-Tronic transmission involves several steps: 1) Disconnect the battery and remove the transmission mount. 2) Drain the transmission fluid and disconnect the driveshaft, electrical connectors, and shift linkage. 3) Support the transmission with a jack and remove the bellhousing bolts. 4) Carefully lower and remove the transmission. Installation is the reverse process, ensuring proper alignment and torque specifications. It is highly recommended to use a repair manual or seek professional assistance.

What are common troubleshooting steps for 5G-Tronic transmission issues?

Common issues with the 5G-Tronic transmission include harsh shifting, slipping gears, or failure to engage. Start by checking the transmission fluid level and condition. Use a diagnostic scanner to read fault codes from the transmission control module. Inspect the valve body, solenoids, and wiring harness for damage. If no issues are found, consider a software update or a professional transmission rebuild. Regular diagnostics can prevent major failures.

How can I optimize the performance of my 5G-Tronic transmission?

To optimize the 5G-Tronic transmission, use high-quality transmission fluid specified by Mercedes-Benz. Regularly service the transmission and ensure the fluid and filter are replaced on schedule. Consider upgrading the valve body or installing a performance tune to improve shift responsiveness. Avoid aggressive driving and ensure the transmission is properly cooled. Regular diagnostics and software updates can also enhance performance and longevity.

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 5G-Tronic Transmission Service Manual

Coming Soon

Detailed service manual covering maintenance, repair, and troubleshooting for the 5G-Tronic transmission in Mercedes SLK models.

5G-Tronic Technical Service Bulletin

Coming Soon

Technical bulletin addressing common issues, updates, and fixes for the 5G-Tronic transmission in Mercedes vehicles.

Mercedes SLK Transmission Parts Catalog

Coming Soon

Comprehensive catalog of parts and accessories for the 5G-Tronic transmission in 1996-2004 Mercedes SLK models.

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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.
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