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Easy Way to Check Mercedes-Benz Fluids

Learn how to check brake, coolant, windshield washer fluid on a Mercedes-Benz vehicle. It is recommended to check fluids and top-of the level before each road trip. Keep in mind that many 2015 and newer Mercedes-Benz utilize electric steering so your vehicle may not a power steering pump. 

Easy Way to Check Mercedes-Benz Fluids
ESTIMATED TIME 15 min
DIY COST $0
DIFFICULTY Very Easy

Check Brake Fluid Level

  1. Open the driver's door and pull the hood release under the dashboard.Pulling the hood release to pop out the hood.Then go to the front of the vehicle and unlock the hood latch.Unlocking the hood latch of the Mercedes Benz GLK-Class.Pull the hood up and use the hood strut to hold the hood.Opened hood of the Mercedes Benz GLK-Class.

     

  2. Locate the brake fluid reservoir on the driver's side of the engine compartment. To check the fluid level shake the reservoir a little to see where the fluid lines.Brake fluid reservoir of the Mercedes Benz GLK-Class.To add brake fluid, open the cap by turning it counterclockwise.Brake fluid reservoir of the Mercedes Benz GLK-Class.

    Close the cap by turning it clockwise. Use the brake fluid recommended by the vehicle's manufacturer and make sure that it is from a sealed container.

Check / Add Windshield Washer Fluid

  1. Locate the windshield washing tank on the driver's side of the engine compartment.Windshield washing tank of the Mercedes Benz GLK-Class.To add fluid, open the blue cap by simply pulling it out.Windshield washing tank of the Mercedes Benz GLK-Class.

    Close the cap by pressing it back to the tank.

Check Engine Coolant Level

  1. Allow the engine to cool down. 
  2. Locate the coolant reservoir on the passenger side of the engine compartment.Coolant reservoir of the Mercedes Benz GLK Class.To check and add fluid, remove the cap on the coolant reservoir by turning it counterclockwise.Coolant reservoir of the Mercedes Benz GLK Class.

    Close the cap when done adding coolant.

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Notes

Tips & Warnings


  • The recommended brake fluid type is also listed in your owner's manual. 
  • The recommended brake fluid type is also noted on the top of the cap for the brake fluid reservoir.
  • Do not allow the brake fluid to spill on the paint of the vehicle. If brake fluid gets on the paint, wash it off with water. Brake fluid can damage the paint. 
  • Note that a brake light staying on at startup can indicate a problem with the brake system, but it can be an issue with the charging system or battery in some cases.
  • You should not lose brake fluid regularly. If you are losing brake fluid, have the brake system checked by a mechanic immediately. 
  • If your brake warning light (or ABS light) comes on or is flashing while driving or at startup, stop and check the brake fluid level.
  • Driving with the brake light on can put you, your passenger, and others at risk.

Tips & Warnings


  • When the engine is hot - Never open the radiator cap when the engine is hot. Wait to for the engine to cool down first. You may get seriously burned if the cap is opened when the engine is still hot or warm. The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing burns or other injuries
  • When towing - Due to the added load of the trailer, your vehicle's engine may overheat on hot days (at temperatures over 85°F [30°C]) when driving up a long or steep grade. If the engine coolant temperature gauge indicates overheating, immediately turn off the air conditioning (if in use), pull your vehicle off the road, and stop in a safe spot.
  • Coolant level keeps dropping -If the coolant level drops within a short time after replenishing Visually check the radiator, hoses, engine coolant filler cap, radiator cap, drain plug and water pump for leaks.  If you cannot find a leak, have a mechanic test the cap and check for leaks in the cooling system. 
  • When adding coolant - The coolant is neither plain water nor straight antifreeze. The correct mixture of water and antifreeze must be used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant label.
Easy Way to Check Mercedes-Benz Fluids Learn how to check brake, coolant, windshield washer fluid on a Mercedes-Benz vehicle. It is recommended to check fluids and top-of the level before each road trip. Keep in mind that many 2015 and newer Mercedes-Benz utilize electric steering so your vehicle may not a power steering pump.