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AsianML
Date registered: Dec 1899
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| Engine coolant light
On cold starts my mom said she's noticed the Engine Coolant light come on and stay on. I saw it last night too. Before I saw it though, I left the ML running for less than five minutes and didn't notice anything (I left before the dummy lights went out). When my mom went outside, she said she saw the coolant light on. So I turned off the car and turned it back on. No light. My mom said the same thing happened again today after a cold start. She said it went away, but I don't know if she restarted the care or not. Any suggestions? Doesn't sound like it happens on a warm start. I haven't gotten to checking the coolant level yet. Oh, does MB have recommended brands for coolant too? 
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AsianML
Date registered: Dec 1899
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| Re: Engine coolant light
I went out and checked the coolant. It's halfway.
But that still doesn't explain why the light only shows up on cold starts and it goes off after restarting.
So I read the manual and it said to use MB coolant....is this another one of the ways to get your money? Any coolant will do? |
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AsianML
Date registered: Dec 1899
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| Re: Engine coolant light
Anybody? Anybody? |
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phoenix44
Date registered: Dec 1899
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| Re: Engine coolant light
AsianML - 3/9/2007 6:30 AM
Anybody? Anybody? :ahhh:
Here is a guess. When the engine has been off for a while, the coolant drains down into the system, leaving the sensor to see that the coolant is low.
Top the coolant up, then look for leaks! |
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roberthelfrick
Date registered: Dec 1899
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| Re: Engine coolant light
Also, if coolant does have a chance to warm it will expand, indicating a higher level. |
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phoenix44
Date registered: Dec 1899
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| Re: Engine coolant light
AsianML - 3/8/2007 7:12 PM
I went out and checked the coolant. It's halfway.
But that still doesn't explain why the light only shows up on cold starts and it goes off after restarting.
So I read the manual and it said to use MB coolant....is this another one of the ways to get your money? Any coolant will do?
.......No, you should use MB coolant. Every thing that I have read indicates that you are asking for problems due to the material used to make the MB rad. Besides, it's not like you need to change it that often. |
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AsianML
Date registered: Dec 1899
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| Re: Engine coolant light
I'm told that you can also use Zerex G-05 (gold container) coolant....? If not, then to the dealer it is. |
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Adoni
Expert
Date registered: Apr 2006
Location: Sacramento, CA
Vehicle(s): '00 G500, '15 C300 4Matic, '06 L322 G4
Posts: 1283
| Re: Engine coolant light
I use Zerex G-05 in my ML500. It's just fine, it's essentially what MB uses, just remember it's not pre-mix. You have to do the mixing yourself. |
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AsianML
Date registered: Dec 1899
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| Re: Engine coolant light
Adoni - 3/9/2007 4:32 PM I use Zerex G-05 in my ML500. It's just fine, it's essentially what MB uses, just remember it's not pre-mix. You have to do the mixing yourself. That's great to know!! What stores sell them? Wallymart? AutoZone? I'll do some calling around too.
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AsianML
Date registered: Dec 1899
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| RE: Engine coolant light
Okay, so it looks like AutoZone carries Zerex. Wal-Mart does not (well ours at least). Our location has it for $11 / gallon. |
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Adoni
Expert
Date registered: Apr 2006
Location: Sacramento, CA
Vehicle(s): '00 G500, '15 C300 4Matic, '06 L322 G4
Posts: 1283
| Re: Engine coolant light
Sounds about right. I live in SF and some how amazingly Kragen had a 2 for $15 deal the one day I walked in needing it. Nice... |
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Bluefin565
Date registered: Dec 1899
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| RE: Engine coolant light
I had same problems light on 8-9 seconds off 1 sec. Just been told its the main fan not working. Had the temp gauge up to 120 +. My vehicle ML500 2003. Did you find out what was wrong. Cliff |
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AsianML
Date registered: Dec 1899
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| RE: Engine coolant light
Bluefin565 - 7/25/2007 8:50 AM I had same problems light on 8-9 seconds off 1 sec. Just been told its the main fan not working. Had the temp gauge up to 120 +. My vehicle ML500 2003. Did you find out what was wrong. Cliff Well since the coolant was half empty, I'm guessing during certain situations like hard braking or hard acceleration, or even turning (depending on where the sensor is located) it might have set the sensor off. I filled the coolant back and no light since.Good luck with your ML500! Sorry I couldn't help.  |
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