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How is a 2003 Mercedes Benz e320 heater not warm but there is air coming from the vents?
Wiki User
∙ 14y ago
Their are a few reasons for this, but the most likely is the heater core shut off valve. It is found right next to the a/c lines where they go through the firewall. You have to take off the wiper and filler panel. That would be where to begin the trouble shooting.
Wiki User
∙ 14y ago
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Why is there no heat coming out the vents on your 2003 Mercedes Benz E-320?
If there is no heat coming out of the vents, but there is air coming out on a 2003 Mercedes Benz E-320, check the thermostat to make sure it is not sticking. If this is okay, check the heater core. If the heater core is bad, there will be water on the passenger side floorboard.
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Take it to a garage!
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