Mercedes-Benz GLS-Class Transmission Fluid Capacity

The Mercedes-Benz GLS-Class stands as the pinnacle of luxury in the brand’s SUV lineup. Often referred to as the “S-Class of SUVs,” the GLS-Class seamlessly combines opulence, cutting-edge technology, and robust performance. Since its inception, the GLS has set benchmarks in the luxury SUV segment, offering ample space, advanced safety features, and a driving experience that’s both dynamic and comfortable. Its presence in the Mercedes-Benz portfolio underscores the brand’s commitment to delivering luxury and performance in all vehicle categories.

Key Takeaways:

  1. Transmission Fluid’s Role: Proper transmission fluid maintenance is vital for optimal vehicle performance, ensuring smooth gear shifts, preventing overheating, and extending the transmission’s lifespan.
  2. Fluid Basics: Transmission fluid serves multiple functions, including lubrication, cooling, and facilitating gear shifts. There are various types of transmission fluids, each with specific characteristics.
  3. Model-Specific Specifications: The Mercedes-Benz GLS-Class X167 models, including the GLS450, GLS580, and GLS63 AMG, all require MB 236.17 Gold transmission fluid, with a capacity of 10.6 quarts (10 liters).
  4. Recognizing Issues: Early detection of transmission problems, such as delayed gear shifting, unusual noises, and warning lights, can prevent more significant issues and costly repairs.
2023 Mercedes-Benz GLS-Class

Transmission fluid plays an indispensable role in ensuring the smooth operation of any vehicle, and the GLS-Class is no exception. This vital fluid serves multiple purposes:

  1. Lubrication: It reduces friction between the moving parts of the transmission, preventing wear and tear.
  2. Cooling: The fluid helps dissipate heat generated within the transmission, ensuring components don’t overheat and maintaining optimal performance.
  3. Power Transmission: It aids in the seamless transfer of power from the engine to the wheels, ensuring smooth gear shifts and acceleration.

For a vehicle as sophisticated as the GLS-Class, using the right transmission fluid and maintaining it properly is paramount. It not only ensures the SUV performs at its peak but also extends the lifespan of the transmission system, safeguarding the vehicle’s value and reliability.

Mercedes-Benz GLS-Class Transmission Fluid Capacity And Type

2024 Mercedes-Benz GLS-Class X167

2024 Mercedes-Benz GLS
  1. GLS450 9-speed 725.035
    • Transmission Fluid Capacity: 10.6 quarts (10 liters)
    • Fluid Type: MB 236.17 Gold
  2. GLS580 9-speed 725.035
    • Transmission Fluid Capacity: 10.6 quarts (10 liters)
    • Fluid Type: MB 236.17 Gold
  3. GLS63 AMG 9-speed 725.085
    • Transmission Fluid Capacity: 10.6 quarts (10 liters)
    • Fluid Type: MB 236.17 Gold
TransmissionFluid capacityFluid type
GLS450 9-speed 725.03510.6 quarts (10 liters)MB 236.17 Gold
GLS580 9-speed 725.03510.6 quarts (10 liters)MB 236.17 Gold
GLS63 AMG 9-speed 725.08510.6 quarts (10 liters)MB 236.17 Gold

For all these models, it’s crucial to use the specified MB 236.17 Gold transmission fluid to ensure optimal performance and longevity of the transmission system. Always refer to the vehicle’s owner manual or consult with an authorized Mercedes-Benz service center for the most accurate and up-to-date information.

2020 – 2023 Mercedes-Benz GLS-Class X167

Transmission fluid type: MB236.17 (Gold).

Fluid capacity: 10.6 quarts.

TransmissionFluid capacityFluid type
GLS450 9-speed 725.03510.6 quarts (10 liters)MB 236.17 Gold
GLS580 9-speed 725.03510.6 quarts (10 liters)MB 236.17 Gold
GLS63 AMG 9-speed 725.08510.6 quarts (10 liters)MB 236.17 Gold
RAVENOL J1D2163-001 ATF (Automatic Transmission Fluid) – M 9-G Series Fluid MB 236.17 Approved (1 Liter)
  • Please see Product Description regarding the California Proposition 65 Warning
  • Designed specifically for use in the Mercedes-Benz 9G-TRONIC NAG3 automatic transmission
  • Provides excellent lubricating ability even at low temperatures along with a high, stable viscosity index
  • Protects against corrosion and foam formation while providing a high thermal and oxidative stability, and an excellent cooling capacity

2017 – 2019 Mercedes-Benz GLS-Class X166

Mercedes-Benz GLS-Class X166
TransmissionFluid capacityFluid type
GLS450 9-speed 725.03110.6 quarts (10 liters)MB 236.17 Gold
GLS550 9-speed 725.03110.6 quarts (10 liters)MB 236.17 Gold
GLS63 AMG 7-speed 722.9Total fill: 9.5 quarts (9 liters)MB 236.15 Blue
RAVENOL J1D2163-001 ATF (Automatic Transmission Fluid) – M 9-G Series Fluid MB 236.17 Approved (1 Liter)
  • Please see Product Description regarding the California Proposition 65 Warning
  • Designed specifically for use in the Mercedes-Benz 9G-TRONIC NAG3 automatic transmission
  • Provides excellent lubricating ability even at low temperatures along with a high, stable viscosity index
  • Protects against corrosion and foam formation while providing a high thermal and oxidative stability, and an excellent cooling capacity

The Primary Functions of Transmission Fluid

Transmission fluid is more than just a lubricant; it’s the lifeblood of the transmission system, performing several critical functions:

  1. Lubrication: At its core, transmission fluid minimizes friction between the gears, bearings, and other moving parts within the transmission. This lubrication prevents wear, ensuring the components have a long and efficient lifespan.
  2. Cooling: Transmissions generate heat, especially during intense driving conditions or when towing heavy loads. The fluid circulates through the system, absorbing this heat and carrying it away to the cooler, ensuring the transmission doesn’t overheat and components remain undamaged.
  3. Hydraulic Function: Modern automatic transmissions use fluid pressure to control gear shifting. The fluid acts as a hydraulic medium, enabling the precise operation of the transmission’s hydraulic components, ensuring smooth and timely gear shifts.
  4. Protection: Quality transmission fluids contain additives that protect against corrosion, rust, and foaming. This ensures the fluid remains effective and the transmission components are shielded from potential damage.

Different Types of Transmission Fluids Available

There are several types of transmission fluids, each formulated for specific types of transmissions and vehicle requirements:

  1. Dexron/Mercon: These are the most common types of transmission fluids used in older GM and Ford vehicles. They have undergone several iterations over the years, with newer versions often being backward compatible with older systems.
  2. Type F: Specifically designed for older Ford vehicles and some makes of imported cars.
  3. Hypoid Gear Oil: Used mainly in manual transmissions, this oil is more viscous and provides the necessary protection for high-pressure and high-temperature conditions.
  4. Continuously Variable Transmission (CVT) Fluid: Designed specifically for CVTs, this fluid is formulated to ensure the belts in a CVT can maintain traction and not slip.
  5. Synthetic Fluid: Made for modern transmissions, synthetic fluid offers better performance, and longevity, and can handle a wider range of temperatures compared to conventional fluids.
  6. ATF+4: Used primarily in Chrysler vehicles, this fluid has specific frictional properties and offers longer service life.

For the Mercedes-Benz GLS-Class, it’s crucial to use the manufacturer-recommended transmission fluid type. This ensures optimal performance, protection, and longevity of the transmission system.

Recognizing Transmission Issues

Transmission issues can manifest in various ways, and early detection is crucial to prevent more severe problems and potentially costly repairs. Here are some common symptoms to watch out for:

  1. Slipping Gears: If the vehicle unexpectedly changes gears without the driver’s input or struggles to stay in gear, this could indicate a transmission problem.
  2. Delayed or Rough Shifting: Experiencing a noticeable delay when shifting gears or feeling a jolt or hard shift can be a sign of transmission trouble.
  3. Unusual Noises: Hearing grinding, whining, or clunking sounds, especially when the vehicle is in neutral, can be indicative of transmission issues.
  4. Transmission Warning Light: Modern vehicles come equipped with sensors that monitor the health of the transmission. If there’s a problem, the transmission warning light on the dashboard will illuminate.
  5. Fluid Leaks: Transmission fluid is essential for the system’s operation. If you notice red or brownish fluid pooling under the vehicle, it could indicate a leak, which needs immediate attention.
  6. Burning Smell: Overheating transmission fluid can produce a burnt odor. This smell indicates that the fluid has broken down and is no longer providing the necessary lubrication and cooling.

The Relationship Between Transmission Health and Fluid Maintenance

The health of a vehicle’s transmission is intricately linked to the state and quality of its transmission fluid. Here’s why:

  1. Lubrication: Fresh transmission fluid ensures that the moving parts within the transmission are adequately lubricated, reducing wear and tear.
  2. Cooling: Transmission fluid helps dissipate the heat generated within the transmission system, preventing overheating and potential damage to components.
  3. Cleanliness: Over time, transmission fluid can accumulate debris and contaminants. Regular fluid changes ensure that these impurities are removed, preventing them from causing damage.
  4. Optimal Performance: Using the correct type and quality of transmission fluid, as specified by the manufacturer, ensures that the transmission operates smoothly and efficiently.
  5. Cost Savings: Regular fluid maintenance can prevent more significant transmission issues, saving on potential repair costs in the long run.

Cost Implications

Changing the transmission fluid for a luxury vehicle like the Mercedes-Benz GLS-Class typically costs more than for average sedans due to the specialized fluid and the intricacy of the transmission system. On average, for a GLS-Class, you can expect to pay between $200 to $400 for a transmission fluid change.

However, this is a general estimate, and prices can vary based on location, labor rates, and other factors.

Factors That Can Influence the Overall Cost

  1. Labor Rates: The cost of labor can vary significantly depending on the region, city, and the specific auto repair shop. Dealerships might charge more than independent auto repair shops, but they offer specialized knowledge and genuine parts.
  2. Type of Fluid: The GLS-Class requires a specific type of transmission fluid, which might be pricier than generic ones. Using the manufacturer-recommended fluid ensures optimal performance and longevity.
  3. Additional Services: Some auto repair shops might offer a transmission fluid change as part of a package that includes other services like a transmission filter change, inspection, or a system flush. While these packages can offer value, they might also be more expensive than a standalone fluid change.
  4. Vehicle Condition: If the transmission system has other issues or if there’s a need for additional parts or services, the overall cost can increase.
  5. Frequency of Maintenance: Regularly maintained vehicles might incur lower costs compared to those that have been neglected, as the latter might require more extensive services.
  6. Geographical Location: Prices can vary based on the cost of living in a particular area. For instance, getting a transmission fluid change in metropolitan areas or affluent neighborhoods might be pricier than in smaller towns.

Frequently Asked Questions

Q: How often should I change the transmission fluid in my GLS-Class?

A: The recommended frequency for changing transmission fluid can vary based on the vehicle’s specific model year and driving conditions. However, for most Mercedes-Benz GLS-Class vehicles, it’s advisable to change the transmission fluid every 40,000 to 60,000 miles. Always refer to the vehicle’s owner manual for the most accurate guidance tailored to your specific model.


Q: Can I use alternative fluid types in my GLS-Class transmission system?

A: While there are various transmission fluid brands and types available in the market, it’s crucial to use the manufacturer-recommended fluid for the GLS-Class. Using an alternative fluid might not provide the necessary lubrication and protection, potentially leading to premature wear and even damage. Additionally, using a non-recommended fluid can void the vehicle’s warranty. If in doubt, always consult with an authorized Mercedes-Benz service center.


Q: What are the signs of low or deteriorating transmission fluid?

A: Recognizing the signs of low or deteriorating transmission fluid can prevent more significant issues. Some common symptoms include:

  1. Delayed or Rough Gear Shifting: If the vehicle hesitates when changing gears or if the shifts are more abrupt than usual, it could be due to low fluid levels or deteriorated fluid.
  2. Unusual Noises: Grinding, whining, or clunking sounds, especially when the vehicle is in neutral, can indicate a transmission fluid issue.
  3. Transmission Overheating: Overheated transmission fluid can produce a burnt smell. Overheating can occur due to low fluid levels or deteriorated fluid that’s no longer effectively cooling the system.
  4. Slipping Gears: If the vehicle unexpectedly changes gears or struggles to stay in gear, it might be due to low transmission fluid.
  5. Transmission Warning Light: Modern vehicles have sensors that monitor the transmission fluid’s health. If there’s an issue, the warning light on the dashboard will illuminate.

If you notice any of these signs, it’s essential to check the transmission fluid level and quality promptly and consult with a professional if needed.

References

  1. Mercedes-Benz Official Website: www.mercedes-benz.com
    The official website of Mercedes-Benz offers comprehensive information about all their vehicle models, including specifications, maintenance guidelines, and more.
  2. Mercedes-Benz GLS Owner’s Manual: Available with the purchase of the vehicle or upon request from authorized dealerships.
    The owner’s manual provides detailed information about the vehicle, including maintenance schedules, fluid specifications, and more.

Author

The information provided in this article is intended for informational and educational purposes only and should not be construed as professional mechanical advice. While the author has made every effort to ensure the accuracy and completeness of the information in this article, we make no warranties or representations as to the accuracy, completeness, reliability, or suitability of the information provided.

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Last update on 2024-02-23 / Affiliate links / Images from Amazon Product Advertising API

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