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#1
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Why is my radiator light/indicator on?
It is a 1991 190E 2.6. Any ideas?
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1994 C280, dark green metallic 105k miles 1991 190E 2.6, Black 191,500 miles (sold to another forum member) 2003 Chevy Tahoe LT, Redfire Metallic 105k miles 1989 Mustang GT Cobra Convertible 43k miles |
#2
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It's connected to the windscreen washer level sensor if I recall correctly. Check that.
good luck Russ
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190E's: 2.5-16v 1990 90,000m Astral Silver 2.0E 8v 1986 107,000m Black 2nd owner http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg |
#3
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The coolant sensor inside the reservoir gets corroded over time and the contacts become faulty. With the sensor contacts unable to complete the connection, a false coolant warning light is made.
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Russell McMahon Tulsa, OK 2001 CLK 320 1992 400se 1993 400e 2000 320ML |
#4
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Low coolant light comes on when coolant sensor corrodes over time...
...gives a false indication of a low coolant problem even though there is none. Check the sensor residing at the bottom of the expansion tank...you will feel a bit of moisture, but it's trace, so overall, it won't change your coolant level appreciably. I have been able to clean the contacts and get the light to stay off for a few days/weeks/months, but it comes back on eventually. The only sure cure is replacement. A new one is about $40 and takes about 15 minutes to do the fix...
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2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car |
#5
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It's actually about $25 and takes less than 5 minutes to replace.
http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1AK0K0ZRT&year=1991&make=MB&model=190-E-005&category=G&part=Coolant+Level+Sensor
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Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) |
#6
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Quote:
...cost and skill level may vary...
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2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car |
#7
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I just bought one for SWMBOs 300E last week. Cost was ~$20 and change from my favorite mail order vendor. In the meantime, unplugging the connector does a fine job of turning off the light. It's not like she's going to stop driving the thing when the light turns on...
- JimY |
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