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Thermostats - myth and legend

Discuss the problems with your X5 (E53).
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nujon7
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Thermostats - myth and legend

Post by nujon7 » Tue Oct 22, 2019 11:35 pm

How many on an e53 3.0d ? - I have changed the unit on the front of the engine but some say there may be two more via transmission cooler and egr - if they are there I certainly cannot find them !

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Alan Gunn
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Re: Thermostats - myth and legend

Post by Alan Gunn » Wed Oct 23, 2019 7:56 am

On my 2002 3.0d there is only one on the engine they don't have the EGR thermostat like all the rest.
The later ones have it but not sure what year they came in.
Sorry not sure about the transmission one

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StuBeeDoo
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Re: Thermostats - myth and legend

Post by StuBeeDoo » Wed Oct 23, 2019 8:07 am

What year is the car? Is it manual or automatic transmission?
October 2012 build X3 30d SE, Bluewater.  Now with Webasto sunroof and paddle-shift   8)
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marti
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Re: Thermostats - myth and legend

Post by marti » Wed Oct 23, 2019 5:42 pm

Just the one stat on the 2 I had 2004 & 2006 both auto's

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henrym3
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Re: Thermostats - myth and legend

Post by henrym3 » Wed Oct 23, 2019 6:46 pm

56117819-A32A-42C7-9C6E-8D9F692FBA85.png
56117819-A32A-42C7-9C6E-8D9F692FBA85.png (237.78 KiB) Viewed 1490 times
Item 4 is listed as a thermostat

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Greydog
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Re: Thermostats - myth and legend

Post by Greydog » Fri Oct 25, 2019 7:32 am

For what it is worth all l my BMW experience is with the 4.4/4.6 engines they have one engine thermostat in the water pump and a water temperature sensor in the lower Rad water pipe, the factory fit transmission cooler is just a heat exchange unit as far as I know. My 4.6 had an after market transmission oil cooler fitted when I got it which does have a thermostat. I have also retro fitted an electric Cooling fan in place of the engine driven fan so now have a temperature sensor in the top hose So my score is 2 thermostat 2 temperature sensors.

Both my sons drive diesels (not BMW) both have EGR thermostats as does my brother in-laws 535d touring all these are 2010 and newer cars though.

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