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93 mercedes 190 e
hi... i have a 93 benz 190 e 2.6 and the heater comes on with the a/c. i change the heater valve, and its stil on. i notice a little box on the passenger firewall outside that glows red. it looks like its a part of the heat system. does anyone knows what this box function is thanks for you time and help guys.
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I believe those are you're the blower motor resistors. They are responsible for varying the voltage delievered to the motor so you get different speeds.
I would wager your problem might be in the climate control push button unit or a vacuum line that runs to the heater valve.
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