2020 Mercedes-Benz GLS-Class Coolant: Specs & Service

Coolant service helps protect the cooling system in a 2020 Mercedes-Benz GLS-Class, an all-wheel-drive SUV with 3.0- to 4.0-liter engines that uses premium unleaded fuel. At Mercedes-Benz of Draper in Draper, Utah, the service includes draining and refilling the coolant with the type and concentration the manufacturer specifies, pressure-testing the system for leaks, and inspecting key components. Coolant additives deplete over time even while the fluid continues to cool the engine, so condition matters beyond appearance. Booking a cooling system service helps distinguish coolant that needs attention from a leak requiring repair, especially when the temperature gauge runs high, a sweet smell appears, or a puddle forms beneath the vehicle.

What a coolant service on a 2020 Mercedes-Benz GLS-Class involves

A coolant service begins with draining the existing coolant and refilling the system with the coolant type and concentration the manufacturer specifies for this vehicle. Using the correct formulation supports the protection designed into the cooling system without relying on color or guesswork. The system is then pressure tested to identify leaks that may not be visible while the vehicle is parked.

Alongside the pressure test, the service includes an inspection of the hoses, cap, radiator and water pump area. These checks help separate a service need from a condition that calls for repair. A low reservoir, rusty or cloudy coolant, a sweet smell, or a puddle under the front of the SUV can make that distinction especially important. The 2020 Mercedes-Benz GLS-Class is available with six- or eight-cylinder engines, so maintaining proper cooling-system condition supports different engine configurations across the model range. To have the system evaluated, schedule service at Mercedes-Benz of Draper.

Why coolant condition matters on a 2020 Mercedes-Benz GLS-Class

Coolant does more than carry heat away from the engine. Its additive package helps protect aluminum and gasket surfaces inside the cooling system from corrosion. Those additives deplete on their own timetable, even while the coolant may still look normal and continue to move heat effectively. That is why condition should be judged through testing and the applicable maintenance schedule rather than appearance alone.

The 2020 Mercedes-Benz GLS-Class uses inline- or V-layout engines ranging from 3.0 to 4.0 liters, and each depends on a properly managed cooling system. A temperature gauge running higher than usual can indicate a concern, while a sweet smell or fluid beneath the front of the vehicle may point toward a leak. The manufacturer's maintenance schedule does not state an interval for this vehicle here, so the condition found during service helps determine the next step. A pressure test can identify whether the system needs service or repair.

Cooling system service at Mercedes-Benz of Draper

Mercedes-Benz of Draper provides cooling-system evaluation for drivers of the 2020 Mercedes-Benz GLS-Class in Draper, Utah. The appointment focuses on the condition of the coolant and the integrity of the system: the coolant is drained and refilled with the manufacturer-specified type and concentration, the system is pressure tested, and the hoses, cap, radiator and water pump area are inspected. This approach gives the driver a clearer answer than topping off the reservoir alone.

If the temperature gauge rises, the coolant looks rusty or cloudy, the reservoir appears low, or a sweet smell or puddle develops, booking an inspection can help identify the cause. The service team can distinguish coolant condition from a leak that needs repair. Mercedes-Benz of Draper is located at 11548 Lone Peak Parkway, Draper, UT 84020. Call 385-425-5461 or schedule an appointment.