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Old 11-18-2012, 02:20 PM
grgry grgry is offline
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Location: Montreal
Join Date: Oct 2011
Posts: 2
Mein Auto: 95 318, 05 X3, 01 R1200c
The reason the light comes on when the engine is cold is that the coolant is at it's densest level (shrink) and as it heats up it expands in size. So if the level is at the limit of the sensor, it may be below when cold and rise above when hot....
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