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If you see the “Check coolant level” or “Top up coolant” messages on your Mercedes, your coolant level is too low.
Ignoring these messages is like ignoring a thirsty plant – not a good idea if you want to keep things running smoothly.
This guide will show you how to check and top up your Mercedes’ coolant.
It’s easier than you might think; let’s dive in!
What do the “Check coolant level” or “Top Up Coolant” messages mean?
If the coolant in a Mercedes is too low, the vehicle will display one of these error messages:
- Check Coolant Level See Operator’s Manual
- Top Up Coolant See Owner’s Manual
Both messages indicate that the coolant level in your car is too low.
You can see the “Check coolant level” or “Top up coolant” messages on various Mercedes models, including the C300, E350, GLE 350, ML350, and GL450.
As written Mercedes Owner’s manualYou should check the level of coolant and add more if necessary.
Don’t panic, though; these messages are more of a gentle nudge rather than an emergency alert.
But it’s a nudge you should not ignore.
Your engine may run too hot if there is not enough coolant. Just like us, after a day in the heat without water, we can have problems.
Low coolant levels can lead to serious engine damage, and trust me, you don’t want to go down that road.
It’s way easier (and cheaper) to top up your coolant than to replace parts of your engine.
How do you check if the Mercedes coolant is at the correct level?
Great, you’re ready to check the coolant level in your Mercedes.
Don’t worry; you just need a bit of know-how and some caution.
Here’s a step-by-step guide:
- Ensure that your engine is cooled. Checking the coolant on a hot engine is a big no-no – it’s risky because the system is pressurized.
- Locate the coolant tank. The coolant reservoir is located under the hood, on the passenger’s side. It is a half transparent container with a coolant symbol:
- Check the coolant levels. The reservoir will have markers indicating ‘Min’ (minimum) and ‘Max’ (maximum) levels. Check the coolant level without opening the cap. It should be between Min and Max. If the level is below the Min mark, it’s time to add coolant. We’ll cover that in the next section.
- Check the coolant’s color. Check the color of your coolant. It should be clear and bright. If it’s murky or has particles floating in it, it might be time for a coolant change – but that’s a different story.
If the coolant level is fine, but you’re still getting messages, it might be a sensor issue or a leak. A visit to the mechanic in this case is a wise move.
How do I top up the cooling fluid on a Mercedes Benz?
So, you’ve discovered that your Mercedes needs some more coolant.
No need to worry, topping up your coolant is simple.
Here is a step-bystep guide to topping up your Mercedes’ coolant:
- Choose the right type. If your Mercedes is older than April 2014, it may need servicing. Blue MB 326.0 coolant. If your Mercedes is older than May 2014, you will need to have it serviced. Pink MB 325,6 coolant.
- Mix the coolant as needed. If your coolant is not pre-mixed, you’ll need to mix it with water. Usually, it’s a 50/50 mix of coolant and distilled water.
- Open the cap of the coolant reservoir. Slowly open the reservoir. Even a cool engine may have some pressure.
- Add the coolant. Using a funnel, pour the coolant into the reservoir up to the ‘Max’ mark. Do not overfill.
- Close the coolant cap. Close the reservoir cap firmly.
- Start your engine. Start your engine, and let it run a few moments. This helps circulate the coolant.
- Check the coolant level. Check the coolant again after the engine has cooled. If it’s dropped significantly, you might have a leak and should consult a mechanic.
It was pretty straightforward, right?
Remember, if you ever feel unsure, there’s no harm in taking your car to a professional.
If you have any more questions about your Mercedes’ coolant, here are the answers to some FAQs:
Can I add water to Mercedes coolant?
It’s not recommended to top up your Mercedes’ coolant system with just water. While a small top-up with distilled water in an emergency is acceptable, it’s crucial to use the right type of coolant as soon as possible. Water alone can’t provide the necessary anti-freeze, anti-boil, and anti-corrosive properties, and it may also affect the cooling system’s efficiency.
What type of coolant should I use in my Mercedes?
Can I just top up my coolant?
Yes, it’s okay to top up the coolant if the level is low. You don’t need to drain and refill your coolant completely if it’s still in good condition.
Can you drive without coolant?
It is possible to drive with low coolant for short distances, but it is not recommended. Low coolant levels may cause engine damage due to overheating. If you notice your coolant is low, it’s best to top it up, especially for longer distances.
Here you go!
You’re now well-equipped to keep your Mercedes’ coolant in check.
It’s great that you’re paying attention to the “Check coolant level” and “Top Up Coolant” dashboard messages.
Remember to always make sure that your engine has cooled down before you check or top up the coolant.
I hope this guide has been helpful in checking and topping up your Mercedes’ coolant.
If you have any more questions, don’t hesitate to reach out or check out more of our maintenance guides.
Enjoy your driving!