Mercedes-Benz GLK-Class: Coolant
Important safety notes
The coolant is a mixture of water and antifreeze/corrosion inhibitor. It performs the following tasks:
- corrosion protection
- antifreeze protection
- raising the boiling point
The engine cooling system is filled at the factory with coolant that contains an antifreeze/corrosion inhibitor that ensures protection down to approximately -35 F (-37 C).
Only add coolant that has been premixed with the desired antifreeze protection. Otherwise, the engine could be damaged. Further information on coolants and on filling can be found in the Mercedes-Benz Specifications for Service Products, MB Approval 310.1, e.g. on the Internet at http://bevo.mercedes-benz.com. You can also consult an authorized Mercedes-Benz Center.
Always use a suitable coolant mixture, even in countries where high temperatures prevail.
Otherwise, the engine cooling system is not sufficiently protected from corrosion and overheating.
If the coolant has antifreeze protection down to -35 F (-37 C), the boiling point of the coolant under operating conditions is approximately 266 F (130 C).
Your vehicle has a range of aluminum components. Aluminum components in the engine make it necessary to use antifreeze/ corrosion inhibitor coolant that has been specifically formulated to protect the aluminum parts. Using other antifreeze/ corrosion inhibitors without these characteristics affects the service life.
The coolant must be used throughout the year in order to maintain the necessary corrosion protection and to provide protection from overheating. In the Service Booklet, you can find information on the intervals for renewal. The renewal interval is determined by the coolant type and the engine cooling system design. The renewal interval in the Service Booklet is only valid if the coolant is renewed or filled up with Mercedes-Benz approved products. Therefore, only use MB 325.0 or 326.0 anticorrosion/antifreeze or another Mercedes-Benz approved product of the same specification.
Information on other products with the same specifications that are approved by Mercedes-Benz can be obtained at an authorized Mercedes-Benz Center or on the Internet at http://bevo.mercedes-benz.com. The coolant is checked at every maintenance interval at an authorized Mercedes-Benz Center.
The antifreeze/corrosion inhibitor concentration in the engine cooling system should:
- be at least 50%. This will protect the engine cooling system against freezing down to approximately -35 F (-37 C ).
- not exceed 55% (antifreeze protection to -49 F [-45 C ]); otherwise, heat will not dissipate as effectively.
If the coolant level is too low, MB 325.0 or 326.0 anticorrosion/antifreeze should be added. Have the engine cooling system checked for possible leaks.
Brake fluid
WARNING Over a period of time, the brake fluid absorbs moisture from the air; this lowers its boiling point. If the boiling point of the brake fluid is too low, vapor pockets may form in th ...Windshield/headlamp cleaning system
WARNING Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/ antifreeze on hot engine parts, because it may ignite and burn. You could be seriously burned. Use MB Summe ...See also:
Drive selector fails to elevate
If the drive selector is obstructed, remove the
obstruction and then start the engine. The
selector should elevate as normal.
If the selector still fails to elevate, even if there
is no obstructio ...
Closing the hood
WARNING
When closing the hood, use extreme caution not to catch hands or fingers. Be
careful that you do not close the hood on anyone.
Make sure the hood is securely engaged before driving of ...
Installation of child restraint systems by use of
lower and tether anchorages (LATCH)
- Child restraint systems and seatbelts
can become hot in a vehicle
that has been closed up in sunny
weather; they could burn a small
child. Check the child restraint
system before you p ...