Changed auxillary battery recently, now heater blows cold air?
10-30-2012, 11:43 AM
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2003 E500 Mercedes
Changed auxillary battery recently, now heater blows cold air?
Recently changed out the auxillary battery (front) - along with resynchronizing all the particulars in the manual (clock, windows, sunroof, etc) - noticed when it got cool outside and tried to use my heater - only blowing cold air. Am I missing something regarding having to do something with the heater regarding resetting heater? Have tried shutting off/on, AC off switch . . . no defrost either front or rear (activated but not hot) Find it odd that the heater valve just would go out at the exact same time . . . comments appreciated - 2003 E500
10-30-2012, 12:52 PM
#2
Out Of Control!!
I would suggest that you start here----http://www.mercedestechstore.com/pdfs/W211_technician/319%20HO%20Dual%20Battery%20(ACB%20-%20ICC)%2011-29-02.pdf
10-30-2012, 05:09 PM
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2004 E320 4matic Sedan
Change the heater valve....
You have probably noticed this sticky:
https://mbworld.org/forums/e-class-w...rol-valve.html
If your 2003 E500 has not had the heater control valve replaced yet, it is probably time you did it. It may be coincidence with your battery, or not, but it is unlikely to be wasted money if you DIY.
If you are in the Nth Hemisphere and it's getting colder, the valve will be getting more action this time of year than through the Summer. I suspect they are more likely to die in the Fall or the first really cold day of Winter because they've had 6 months rusting in one position. The failure is due to water leakage and rust build-up inside them that eventually makes the drive pinion inside too stiff to move.
https://mbworld.org/forums/e-class-w...rol-valve.html
If your 2003 E500 has not had the heater control valve replaced yet, it is probably time you did it. It may be coincidence with your battery, or not, but it is unlikely to be wasted money if you DIY.
If you are in the Nth Hemisphere and it's getting colder, the valve will be getting more action this time of year than through the Summer. I suspect they are more likely to die in the Fall or the first really cold day of Winter because they've had 6 months rusting in one position. The failure is due to water leakage and rust build-up inside them that eventually makes the drive pinion inside too stiff to move.
