Low coolant warning (2012 C63)
Thread Starter
Member
Joined: Mar 2012
Posts: 128
Likes: 0
From: Toronto
2012 C63 w/APX
Low coolant warning (2012 C63)
Hi everyone.
I've been getting a low coolant msg on my dash, but only on startup in winter cold temps (I live in Toronto). There is no warnings when the car is warm, or when the car is started in warmer temps (spring, summer and fall).
I've read up on the dreaded headbolt issues on the M156, and I see that a low collant msg can be a warning sign. I thought there was a fix on 2012+ models...
I had this issue last winter as well. The SA (and AMG tech) said there was no problem and I didn't think anything of it.
I'm probably gonna stop by to see my SA next week, but do you guys think this is a serious problem? How often do we have to top up our coolant in normal conditions?
Thanks
I've been getting a low coolant msg on my dash, but only on startup in winter cold temps (I live in Toronto). There is no warnings when the car is warm, or when the car is started in warmer temps (spring, summer and fall).
I've read up on the dreaded headbolt issues on the M156, and I see that a low collant msg can be a warning sign. I thought there was a fix on 2012+ models...
I had this issue last winter as well. The SA (and AMG tech) said there was no problem and I didn't think anything of it.
I'm probably gonna stop by to see my SA next week, but do you guys think this is a serious problem? How often do we have to top up our coolant in normal conditions?
Thanks
Thread Starter
Member
Joined: Mar 2012
Posts: 128
Likes: 0
From: Toronto
2012 C63 w/APX
I should also say that there have been no CEL's of any kind and no real noticeable change to the driveability. I can't notice any smells, but in all honesty I don't even know what coolant smells like (I admit that I love driving her, but don't have much technical knowledge of cars).
Any info/suggestions would help at this point.
Thanks
Any info/suggestions would help at this point.
Thanks
Senior Member
Joined: Sep 2014
Posts: 474
Likes: 0
From: Calgary, AB
2011 C63 AMG P31
You have revised headbolts, so it's likely not that.
Check the level, could be a failed sensor (serviced a 2012 ML350 Bluetec that had this issue), or there could be a leak. Since you're under warranty still I'd let them deal with it.
Check the level, could be a failed sensor (serviced a 2012 ML350 Bluetec that had this issue), or there could be a leak. Since you're under warranty still I'd let them deal with it.
Hi everyone.
I've been getting a low coolant msg on my dash, but only on startup in winter cold temps (I live in Toronto). There is no warnings when the car is warm, or when the car is started in warmer temps (spring, summer and fall).
I've read up on the dreaded headbolt issues on the M156, and I see that a low collant msg can be a warning sign. I thought there was a fix on 2012+ models...
I had this issue last winter as well. The SA (and AMG tech) said there was no problem and I didn't think anything of it.
I'm probably gonna stop by to see my SA next week, but do you guys think this is a serious problem? How often do we have to top up our coolant in normal conditions?
Thanks
I've been getting a low coolant msg on my dash, but only on startup in winter cold temps (I live in Toronto). There is no warnings when the car is warm, or when the car is started in warmer temps (spring, summer and fall).
I've read up on the dreaded headbolt issues on the M156, and I see that a low collant msg can be a warning sign. I thought there was a fix on 2012+ models...
I had this issue last winter as well. The SA (and AMG tech) said there was no problem and I didn't think anything of it.
I'm probably gonna stop by to see my SA next week, but do you guys think this is a serious problem? How often do we have to top up our coolant in normal conditions?
Thanks
Ask your mb dealer for your Engine number.
If your Engine number are higher than 060658 you should have no Head bolt issue
Super Member
Joined: Apr 2014
Posts: 728
Likes: 6
From: Chicago, IL
2018 AMG E63s
I have a '14 and I got one of these messages the other day. It was cold, and I had the car parked on an incline, and I think the combination set the sensor off. Had no messages since. It's super easy to check your fluid level - have you looked at the coolant in the reservoir? If not do it but not when the car's hot for God's sake. But at least check it.
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Joined: Jul 2013
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Likes: 7
C63 AMG
Your coolant is a bit low
The level drops when cold
It rises 15 mm as temp goes from 68 f to 195 f
Refrence your manual
Adjust level when cold, there is a black/white tab in the middle of the tank
The level should be at the center of the tab
Do not overfill, probably a few oz, add a bit and check, repeat
The level drops when cold
It rises 15 mm as temp goes from 68 f to 195 f
Refrence your manual
Adjust level when cold, there is a black/white tab in the middle of the tank
The level should be at the center of the tab
Do not overfill, probably a few oz, add a bit and check, repeat
Last edited by Ingenieur; Dec 14, 2014 at 11:45 AM.
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Banned
Joined: Jul 2013
Posts: 2,811
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C63 AMG
Very tight range on the sensor
Perhaps < 1"
So if marginal when warm outside it may trip when the level drops due to cold weather
OP
With car stationary for more than 8 hours
Open hood (it's a pull lever under dash left of the steering wheel)
Release hood safety latch
Open hood to 90 deg
Locate reservoir (from front left side blk/wht tank)
Put a rag on the cap and remove CCW
With a flashlight peer into the tank
On the backside you will see a tab in the middle height of the tank
It is blk & wht at the same level the black and wht tank halves are joined
The coolant should be right at the black/wht transition on the tab
Add the coolant mix until it is at the proper level a bit at a time checking every few ounces
This should take less time than it took me to type this
<5 minutes
Far less that taking it to the dealer lol
They may charge you since this maintenance not a failure
If level is correct and light is on then take it
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Joined: Sep 2005
Posts: 3,165
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C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
MBWorld Fanatic!
Joined: Feb 2011
Posts: 1,345
Likes: 3
From: Oakland, CA
'16 GTS Solar
I have experienced this as well - received the message a few times over the past couple of weeks but only when the car has been sitting overnight in temps below 32F. It immediately goes away when the car warms up...I'll check my levels tonight and add a little if needed. I assumed it was temp/sensor related due to the cold.
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Joined: Feb 2010
Posts: 5,649
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Best to get the correct coolant from MB, mix it 50/50 and top off the coolant to the correct level. This will maintain the long service life of the factory coolant in the car. Should be the blue colored coolant.
Last edited by Mort; Dec 15, 2014 at 05:07 PM. Reason: Coolant color
MBWorld Fanatic!
Joined: Aug 2009
Posts: 2,899
Likes: 93
C63 AMG
Coolant chemistry has become very complicated. Also, color means nothing these days. You have a silica packet embedded in your cooling system that replenishes protective additives. Don't even think about using anything other than OE...there is no longer a one-size-fits-all solution to coolants.
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Joined: Jul 2013
Posts: 2,811
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C63 AMG
So what is spec'ed for our cars?
325.0
326.0
325.6
326.6
???
http://bevo.mercedes-benz.com/d/d/en/Spec_310_1.pdf
These look ok and are locally available
http://www.valvoline.com/pdf/Zerex_G...l_Bulletin.pdf
http://www.valvoline.com/pdf/zerex_g48.pdf
Looks like the g48 is bmw oem
I have some pre-mixed 50/50 with distilled water
I would not have concerns topping off with it
325.0
326.0
325.6
326.6
???
http://bevo.mercedes-benz.com/d/d/en/Spec_310_1.pdf
These look ok and are locally available
http://www.valvoline.com/pdf/Zerex_G...l_Bulletin.pdf
http://www.valvoline.com/pdf/zerex_g48.pdf
Looks like the g48 is bmw oem
I have some pre-mixed 50/50 with distilled water
I would not have concerns topping off with it
Last edited by Ingenieur; Dec 15, 2014 at 10:34 PM.
