Check Coolant Level!
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MBWorld Fanatic!
Joined: Jul 2005
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From: New York City
C55 ///AMG, 535xi
Check Coolant Level!
Hey, recently I've been seeing "check coolant level" on the dashboard comp. I did check the coolant level, it seems like theres enough?
I shut off the car, turned it back on, its ok, no malfunctions, this happened twice, once during driving, and once during startup.
anything I should check for? should I add a lil more coolant? if so, I can use thos PRESTONE bottles ryte?
I shut off the car, turned it back on, its ok, no malfunctions, this happened twice, once during driving, and once during startup.
anything I should check for? should I add a lil more coolant? if so, I can use thos PRESTONE bottles ryte?
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From: The blue white rock, third out.
2002 C230 Coupe(M111)
Originally Posted by jsloan01
Fill your baby up w/ some windshield washer fluid. You are likely low.
Once you do this, the light will go away. It has happened to me and countless others.
Once you do this, the light will go away. It has happened to me and countless others.
The mystery is where did the coolant go? It doesn't get used up or evaporate. Unless you can point to a cracked resevoir, or a leaky hose, this likely means cracked block or head gasket(s). Good luck. I'd see the dealer. Maybe its just the sensor going to hell.
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Joined: Jul 2005
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From: New York City
C55 ///AMG, 535xi
Originally Posted by Outland
That would show a message for washer fluid...not coolant.
The mystery is where did the coolant go? It doesn't get used up or evaporate. Unless you can point to a cracked resevoir, or a leaky hose, this likely means cracked block or head gasket(s). Good luck. I'd see the dealer. Maybe its just the sensor going to hell.
The mystery is where did the coolant go? It doesn't get used up or evaporate. Unless you can point to a cracked resevoir, or a leaky hose, this likely means cracked block or head gasket(s). Good luck. I'd see the dealer. Maybe its just the sensor going to hell.
yeah im thinking it might be the sensor, I threw old cardboard under the car, to see if theres anything leaking, i spent 1/2 hr looking under the hood. so i'm assuming that the sensor is being
I first thought it was something to do with the windshield fluid being low, I poured 2 gallons into it already (after the first time it came up) but the message came up again...
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From: The blue white rock, third out.
2002 C230 Coupe(M111)
Originally Posted by advans
I poured 2 gallons into it already (after the first time it came up) but the message came up again...
If nothing shows up on the cardboard and the level drops, then you definately have a big problem. If the level stays the same, its the sensor.
Senior Member
Joined: Jun 2005
Posts: 264
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From: Houston, TX
2010 C300
Had the same problem, dealer replaced the sensor under warranty.
But I seem to remember people saying that the low washer fluid could trigger the coolant light as well. I know this doesn't sound like it makes sense... but hey, anything's possible. It's MB electronics.
But I seem to remember people saying that the low washer fluid could trigger the coolant light as well. I know this doesn't sound like it makes sense... but hey, anything's possible. It's MB electronics.
Super Member
Joined: Aug 2005
Posts: 952
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From: New York, NY
2025 CLE 53 AMG
Originally Posted by HoustonC230
Had the same problem, dealer replaced the sensor under warranty.
But I seem to remember people saying that the low washer fluid could trigger the coolant light as well. I know this doesn't sound like it makes sense... but hey, anything's possible. It's MB electronics.
But I seem to remember people saying that the low washer fluid could trigger the coolant light as well. I know this doesn't sound like it makes sense... but hey, anything's possible. It's MB electronics.
Do a search on this forum and you'll find other posts similar to this. It may be another problem, but try topping off your washer fluid.
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MBWorld Fanatic!
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From: New York City
C55 ///AMG, 535xi
Originally Posted by jsloan01
You are correct. My coolant light would come on, but not my washer fluid light. That light would go off then a day later both (coolant and washer fluid) came on.
Do a search on this forum and you'll find other posts similar to this. It may be another problem, but try topping off your washer fluid.
Do a search on this forum and you'll find other posts similar to this. It may be another problem, but try topping off your washer fluid.
the washer is topped off already =T
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Out Of Control!!
Joined: Dec 2001
Posts: 12,161
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From: Obama Land
K Car
I had a similar issue on my 02 C320 during the first year. I took it in to service twice before they finally fixed the problem. First time they replaced a sensor AND the HVAC unit in the dash. However, I would still get the "check coolant" message. What was causing the message was the temperature, not a lack of coolant (although it wasn't so hot that it was overheating). They finally replaced a bearing on the electric fan. That ended the problem.
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Joined: Jul 2006
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From: Central Florida
R129, XF Sportbrake, SC400
I've been getting the "Coolant. Visit Workshop!" light almost daily on my 02
C320. It comes on intermittently. Sometimes it comes on after a few minutes of driving, and sometimes right on start-up. The level of coolant and the temperature of the engine are both within normal range. Any ideas as to what could be the cause?
C320. It comes on intermittently. Sometimes it comes on after a few minutes of driving, and sometimes right on start-up. The level of coolant and the temperature of the engine are both within normal range. Any ideas as to what could be the cause?
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Joined: Nov 2001
Posts: 5,851
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From: Huntington Beach, Ca.
'17 Jaguar XF
I've had the same symptom....once it was caused by low washer fluid (coolant and washer fluid sensors are on the same circuit)....and twice by low fluid - even though it "looked" pretty full. The proper level is "the coolant should reach the black part on the top of the resevoir". Usually you see an air gap in resevoirs...not this one.
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From: SoCal, Irvine
Stage 2 C7 A6, QX60
