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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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Old 12-24-2019, 05:10 PM
plus1111 plus1111 is offline
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Location: ohio
 
Join Date: Jun 2014
Posts: 184
Mein Auto: 2008 535xi
Coolant Purge Malfunction

I have changed coolant and purged the system several times in our 2 e60's. Over the weekend I changed the coolant pump and thermostat on the 530xi. It has the N52 with external pump and thermostat.
For some reason, the purge cycle will not start. I even pulled out the Bentley manual to be sure I had the steps right.
Oddly, after trying to purge, when I press start to turn everything off, it won't turn off. I have to eject the fob to turn stuff off. If I run the car the stop works perfectly.
Any ideas? I'm beginning to think I have a wonky pump sending weird signals or something.
Thanks!
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Hobby mechanic doing my own work for 50 years or so.
We have a 2006 530xi Touring and a 2008 535xi sedan.
I can't really remember the last time I took a car to a repair service.
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