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X5 E53 (1999 - 2006)
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Old 12-16-2012, 07:43 AM
col7122 col7122 is offline
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Location: FRANCE
Join Date: Nov 2012
Posts: 4
Mein Auto: X5
Is this thermostat?

I am a new owner of a BMW x5
I too have experienced the no heat in car, I was out the other day and thermometer flew into red after only driving 25 mins
I stopped turned off engine started up again and all was ok
My mechanic has said it's defo the thermostat....however on going in the engine discovered under the rocker cover cap was White milky residue under cap.....not used any extra water and dipstick oil is clear.....I called the garage I bought from and he fully assured me it is a common fault on these engines E53 3litrei and he says that there is a conversion for the rocker cover breather pipe, and said no way was it the head gasket!!!!!!!! And also he said that problem only seems to happen on cars under 100k mines only done 73k
I am new to BMW so can't say either way.....as normally these indicators as already suggested are head gasket....I do have this car under warranty so he knows if it went pear shaped!!!!!what would happen
Hope this helps!!!!! With any similar faults / answers
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Old 12-16-2012, 11:16 AM
QSilver7's Avatar
QSilver7 QSilver7 is offline
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Location: Northeast Indiana
Join Date: Aug 2008
Posts: 9,043
Mein Auto: 1997 740iL / 2006 X5 4.4
Help us help you better by giving us some details/information about which of the multiple X5 models you have. There are multiple engines & transmissions etc...and you have no signature with vehicle details...nor did you mention anything about which X5 model/model year/build date your vehicle is.
  • 3.0i (m54)
  • 3.0d (m57)
  • 4.4i (m62TU)
  • 4.6is (m62TU)
  • 3.0d (m57n)
  • 4.4i (n62)
  • 4.8is (n62)
Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

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Old 12-16-2012, 11:37 AM
col7122 col7122 is offline
Registered User
Location: FRANCE
Join Date: Nov 2012
Posts: 4
Mein Auto: X5
Thank you
sorry its a 2002 X5 3.0LITRE I PETROL as i put (E53) I thought
thanks again
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Old 12-17-2012, 08:30 AM
tmvE39/E53/Z32's Avatar
tmvE39/E53/Z32 tmvE39/E53/Z32 is offline
Officially Welcomed to the 'Fest
Location: Seattle --> Atlanta
Join Date: Dec 2010
Posts: 2,033
Mein Auto: Dinan //M5, Dinan 4.8iS,
It seems like you have air trapped in your cooling system. I'd check the coolant level and bleed the system first.

2000 Dinan S1 //M5 (my DD), 06 DINAN E53 4.8iS (wife's DD), 90 Straman Z32TT (my pride & joy ride)
Gone, but not forgotten: 01 E53 3.0i, 01 525i Sport, 03 DINAN 540i MSport, 01 //M5 and 91 Z32TT
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