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Newbie with a coolant dash on

 
Old 02-27-2019, 11:23 AM
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1999 ML 320, 2011 E550
Newbie with a coolant dash on

Hi,
New to this forum, not new to Mercedes. I have a 1999 ML 320. The coolant dash light comes on after 5 minutes of driving and then will go off. For a 20 minute drive, the light may come on three to five times. The reserve tank against the firewall is full. No leaks that I can see. The temp is running at 90 degrees or a tad less. The water pump was replaced about 6 months ago, that was a drip leak back then. My mechanic pressure tested the coolant system, no leak. My concern is I smelled a whiff of coolant maybe twice in a month after parked and turned off. Again, no leaks. The mechanic was saying it may be an old radiator or heater core. Any suggestions? Thanks.
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Old 02-27-2019, 12:28 PM
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2002 ML 320 & 2006 ML500
Try removing the cabin air filter and see if it is wet with coolant.
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R&I Cabin Air Filter.pdf (88.7 KB, 9 views)
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Old 03-02-2019, 05:24 AM
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1999 ML 320, 2011 E550
Originally Posted by Maj. Dundee View Post
Try removing the cabin air filter and see if it is wet with coolant.
Thank you I think you got it.
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