Question about 2000 Mercedes-Benz S-Class
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Posted on Jan 02, 2017
SOURCE: Everytime I turn on the
This is normal....everything is working fine...if the window is being defrosted.
The defrost on a car works by using the A/C to remove the moisture from the air (thereby lowering the relative humidity)
It also lubricates the seal within the A/C unit during the winter...reducing the chance of seizure/failure during the following summer due to lack of lubrication.
Posted on Oct 07, 2008
If you're sure that A/C works, then all you need to do is to ensure that fuse for vents are still ok. If it is, then I'd suggest to disconnect vent motor located under the dashboard in passengers side, and using multimeter or just a simple no more than 5W lightbulb to check and ensure that current comes to the motor. after this step you'll be sure that motor is ok if there are no current. then the problem will be in control panel. I suggest you to take appart the control panel only if you are confident that you'll manage to put it back together.
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Posted on Mar 27, 2009
You could remove fuse 25 (30amp) in the underhood fuse panel, but then no blower for AC, heat, or defrost. Need to replace blower regulator.
Posted on May 20, 2009
hello,good day,yes your may check the power supply and contact,if not corrected,send your car to a dealer for proper diagnose,maybe erase fault or configuration of your system is needed,to correct the problem,ty
Posted on Jul 25, 2009
dealership has to repalce control unit and clear the trouble codes, a free fix is unpluging your hvac fuses, and disconnecting your battery for 3 minutes, and then reconnecting your battery, and pluging in your hvac fuse, ensure the controls are off so that the hvac can go through all its cycles to regain the correct positon. sometimes the control doors move out of indexed range and the computer doesnt know what position they are in, so they default to defrost. if yours isnt too far out of range you can go back to enjoying normal ac and heat, if it is too far out of range you can still have ac and heat just through the defrost postion.
Posted on Aug 09, 2010
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