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X5 E53 (1999 - 2006)
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Old 12-21-2016, 03:37 PM
DanRan DanRan is offline
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Location: Kansas
Join Date: Dec 2016
Posts: 1
Mein Auto: 2002 BMW X5
2002 BMW X5 Blower Works Heat does NOT

A friend told me once that "No good deed goes unpunished" ....Well I loaned my X5 to an older guy who needed a vehicle to drive since his car was in the shop.
Now the vehicle operates flawlessly but does not produce heat in the cabin, blower works, AC works. Heater gauge when operating vehicle is right in the middle. I took vehicle to BMW dealership and they indicated that there seemed to be a blockage in the block somewhere and found white gunk in the hoses. The hoses to the Heater control valve do not get hot nor do the hoses entering the firewall to the heater core. Essentially they threw their hands up in the air and gave up stating need to remove engine from vehicle and flush block. (My guess is the old guy in an effort to be helpful poured stop leak in the radiator and that is what I am dealing with but this could be a red herring)
I took it to another non-bmw repair shop and they called the first repair shop but really did not open things up beyond using a heat gun to measure heat on different hoses (two days wasted)

I could use a diagram of fluid flow through the block and any valves that may be failing along the way....
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Old 12-24-2016, 12:30 PM
gunyvw gunyvw is offline
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Location: va
Join Date: Aug 2011
Posts: 524
Mein Auto: x5
sounds like a bad thermostat ....
water pump
or low coolant level
remove the engine to flush the block ...

you didnt say which engine you have so
with water pumps in the faded parts

Last edited by gunyvw; 12-24-2016 at 12:38 PM.
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Old 01-07-2017, 02:27 AM
andrewwynn andrewwynn is offline
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Location: Racine, WI
Join Date: Jul 2015
Posts: 67
Mein Auto: '01 E53 X5 Black/Black
+1 thermostat. Use the hidden obc menu to display coolant temperature. The useless gauge is 40 off.

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heater control valve, no heat from vents

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