1999 ML320 Heat issue - Mercedes-Benz Forum

 
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post #1 of 2 (permalink) Old 10-18-2012, 09:31 PM Thread Starter
BenzWorld Newbie
 
Date registered: Apr 2009
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1999 ML320 Heat issue

Have a 1999 ML320 I have heat from the rear vents and but on DEF.
Midle vents blow cold air.
Mechanic has replace the following
thermostat
Cabin Air Filter
Auxiliary Water Pump

still not geting warm/hot air from middle vents
Any sugestions is much appreciated
thank you
cicero24 is offline  
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post #2 of 2 (permalink) Old 10-18-2012, 10:07 PM
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Date registered: Jul 2005
Vehicle: 90 300E, 99 ML430, 00 ML320, 05 E500 4matic Wagon
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The air blend motor needs to be checked. Very common on the W163 ML vintage.
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