Coolant Low warning
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From: San Jose area
'19 E63S sedan
Check your oil dipstick for the presence of water. The coolant system is sealed so it's not trivial. I'd take it in to be checked and topped up. You have to use the right coolant, mixed 50-50 with water, preferably distilled.
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'12 C63 Black Series, '12 ML350 BlueTech
Yep check your level after topping up.
Check for leaks around the master cylinder or underneath your car for spots.
No need to panic trouble shoot step by step before jumping into conclusions.
Check for leaks around the master cylinder or underneath your car for spots.
No need to panic trouble shoot step by step before jumping into conclusions.
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C63 AMG
Preferably distiller water, master cylinder, white smoke from exhaust?
Hmmm
Could be nothing, could be a stretched or broken head bolt.
If you have warranty take it to the dealer, have them pressure test the cooling system. Record that you were in there with a low coolant message... Worst case and have them top it up.
Say you know that you are aware of the head bolt issue and would like it checked out. Your coolant system shouldn't be loosing fluid.
Hmmm
Could be nothing, could be a stretched or broken head bolt.
If you have warranty take it to the dealer, have them pressure test the cooling system. Record that you were in there with a low coolant message... Worst case and have them top it up.
Say you know that you are aware of the head bolt issue and would like it checked out. Your coolant system shouldn't be loosing fluid.
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C63
Yea been driving for a long time it don't think I have ever had any coolant issues
Thing is this car is out of warranty
Will top it up with distiller water later and keep an eye on it
Might go get it checked later this week
Thanks for the advices
Thing is this car is out of warranty
Will top it up with distiller water later and keep an eye on it
Might go get it checked later this week
Thanks for the advices
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From: San Jose area
'19 E63S sedan
Not a great idea to top up with pure water. The 50-50 mix needs to be maintained to within a percent or two. You really want to get some of the right coolant at the dealer and mix it 50-50.
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2010 P31 Obsidian; 1990 ZX11
Recommend following Merc63's advice. Nothing replaces the assurance of a pressure test performed by a Merc dealer, have it documented, and lastly have them top it off. Documenting the service visit may be useful to you later.
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C63 AMG
Is this the first time in 5 or 6 years?
The car only has 18k miles?
Have you ever checked the level before?
Top it off per manual
Car should be cold (setting over night on a level spot)
It can be checked warm but cold is better imo
Use a flashlight to see better
In the tank you will see a 1/2 white and 1/2 black 'tab'
Adjust the level EXACTLY to the black/white transition
After you do that check it weekly in the same manner
Cold, same spot, etc
If checked hot it should be 15 mm higher
But do it cold to have a more consistent basis for comparison
Don't panic all cars use coolant
That is why the manual says to check/top off
The car only has 18k miles?
Have you ever checked the level before?
Top it off per manual
Car should be cold (setting over night on a level spot)
It can be checked warm but cold is better imo
Use a flashlight to see better
In the tank you will see a 1/2 white and 1/2 black 'tab'
Adjust the level EXACTLY to the black/white transition
After you do that check it weekly in the same manner
Cold, same spot, etc
If checked hot it should be 15 mm higher
But do it cold to have a more consistent basis for comparison
Don't panic all cars use coolant
That is why the manual says to check/top off
Last edited by Ingenieur; Jul 20, 2014 at 09:51 AM.
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C63
Yes wouldn't be as panicky if there were no headbolt problems
Anyway looked into the coolant tank it's really just slightly down
Filled about half a bottle of mobile one coolant then another half a bottle of redline water wetter and it was already full
Was gonna finish the whole bottle of water wetter and add water if needed
Will check again in a few days but yes never really had to fill coolant in over 10 years of driving
I must be lucky
Anyway looked into the coolant tank it's really just slightly down
Filled about half a bottle of mobile one coolant then another half a bottle of redline water wetter and it was already full
Was gonna finish the whole bottle of water wetter and add water if needed
Will check again in a few days but yes never really had to fill coolant in over 10 years of driving
I must be lucky
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C63 AMG
Slightly down on a closed system...
Get a pressure test. But I wonder if a pressure test would show a slightly stretched bolt. Engine would need to be running to create enough pressure for the leak.
Get a pressure test. But I wonder if a pressure test would show a slightly stretched bolt. Engine would need to be running to create enough pressure for the leak.
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C63
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C63 AMG
Again, some loss is normal since NO system is perfect
The caps leak abit
Hoses weep
Joints seep
Etc
If you lost 1 oz per year for 6 years no issue
If you lost 6 oz in a week there is an issue
Look in your manual index 'coolant check level'
It says to check and ADD if required
The system holds 400 oz
If I lost 1 or 2 % 4 or 8 oz over 6 years and 500 hours of operation I would not consider that an issue
http://www4.mercedes-benz.com/manual...30_2389_31.jpg
Level must be below the small hose entering the front of the tank
How much did you add?
It may be the sensor
The caps leak abit
Hoses weep
Joints seep
Etc
If you lost 1 oz per year for 6 years no issue
If you lost 6 oz in a week there is an issue
Look in your manual index 'coolant check level'
It says to check and ADD if required
The system holds 400 oz
If I lost 1 or 2 % 4 or 8 oz over 6 years and 500 hours of operation I would not consider that an issue
http://www4.mercedes-benz.com/manual...30_2389_31.jpg
Level must be below the small hose entering the front of the tank
How much did you add?
It may be the sensor
Last edited by Ingenieur; Jul 20, 2014 at 11:16 AM.
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C63
We'll I didn't top it off to a point it spills I mean I know it heats up and expands hahahahahaha
Will check again when it's cold tomorrow
So it should be just above the clear part of the bottle right
Will check again when it's cold tomorrow
So it should be just above the clear part of the bottle right
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From: San Jose area
'19 E63S sedan
What is Mobile 1 coolant? The correct coolant is Zerex G-05. It's a fairly different chemistry from most and is designed for the metals of our cooling system and to work with the silica gel packet in that overflow container. If you've used an incompatible coolant, you should probably get the coolant changed at some point before long.
BTW, the level sensors sometimes fail and give false alerts.
BTW, the level sensors sometimes fail and give false alerts.
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C63 AMG
How much did you add
Driving the car over-filled will make it run hotter
Haven't you read anything?
There is a fill level marker IN the tank
http://www4.mercedes-benz.com/manual...30_2389_31.jpg
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C63
If this is the case I believe it might have been a sensor fault
When I filled the coolant the overfill bottle actually had fluid inside
I think probably less than a liter of coolant was added
I thought mobile one was safe
Damn it I sound like a noob(ok I am one)
When I filled the coolant the overfill bottle actually had fluid inside
I think probably less than a liter of coolant was added
I thought mobile one was safe
Damn it I sound like a noob(ok I am one)
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C63 AMG
You added less than a liter and it filled it basically to the top?
Yep guessing you weren't actually low
Adjust to the proper level
If you do this before running the car you will remove 1/2 of what you put in
The coolant bottle should have specs on it
Look for MB 325.0
Was it dark blue/green?
Yep guessing you weren't actually low
Adjust to the proper level
If you do this before running the car you will remove 1/2 of what you put in
The coolant bottle should have specs on it
Look for MB 325.0
Was it dark blue/green?
Last edited by Ingenieur; Jul 20, 2014 at 11:53 AM.
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From: San Jose area
'19 E63S sedan
The approved coolant list:
http://bevo.mercedes-benz.com/bevolisten/325.0_en.html
Yes, there is a Mobil product on the list, but I've never seen it for sale. The only one that my local parts place carries is the Zerex G-05. Just advising being careful.
http://bevo.mercedes-benz.com/bevolisten/325.0_en.html
Yes, there is a Mobil product on the list, but I've never seen it for sale. The only one that my local parts place carries is the Zerex G-05. Just advising being careful.
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From: San Jose area
'19 E63S sedan
And the technology in these cars is pretty advanced, so minor screw-ups like this are understandable if you're used to normal cars.
If the coolant wasn't the specific approved Mobil GS 333, have the system flushed with the right stuff to avoid expensive problems like water pump leaks or radiator failures in the future. Then you'll be good for 150,000 miles.
