[W126 Coupe] Radiator fullness dash light

[Mike R.]

The coolant level sensor is in the overflow reservoir. Look on the inboard
side of the reservoir (towards the engine), near the front of it. Couple of
wires plugged into the sensor. Probably a loose connection on the sensor.
 
Mike
 
 
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of millerlh at earthlink.net
Sent: Thursday, September 03, 2009 8:09 AM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Radiator fullness dash light
 
Looking for suggestions.
 
Lately the coolant level warning light on the dash of my 1990 560 SEC
(166,500 miles) has been illuminating dimly after the car warms up. It stays
lit most of the time, but not ALL the time. The engine never runs hot, and
stays between 80 deg and 90 deg on the hottest days we have had this summer,
in traffic, etc.
 
I checked the overflow reservoir and it appears full within the
specifications, when cold and hot, and there is no indication of a leak that
I can see.
 
I am assuming it is probably a problem with a sensor, somewhere. Where is
the thing located, and is it a very simple fix? 
 
Or is this an indicator of a deeper problem that can't be handled by my non
mechanically oriented brain, and should go to someone who knows their
stuff..
 
I appreciate any input.
 
Lou Miller
millerlh at earthlink.net
EarthLink Revolves Around You.
 
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