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Unread 05-05-2012, 08:41 AM   #1
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Name: Yatti
Title: Member
Status: Offline
Join Date: Apr 2005
Location: Waterloo Ontario Canada
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Your Ride: 2003 540I Sedan (M-Sport)
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2003 E39 540 - Low Coolant Alarm

Hi Everyone,

Trying to get an idea of what to check.. Low coolant alarms since last year.. No indication of leaks.. We were messing around last year in "test mode" i think for the driver side cpu.. As posted previously this car isnt really driven alot nor hard.. Ideas on what to tackle first? Coolant sensor?


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