Mercedes e220 2003heater blower not switch off mercedes e220 20003

Did you check the connectors and blower switch for signs of overheating?

http://www.autozone.com/cooling-heating-and-climate-control/a-c-heater-blower-motor/everco-a-c-heater-blower-motor/mercedes-benz/c280/1998/6-cylinders-2-8l-mfi-sohc/385580_0_1526_5281/?checkfit=true

i'd guess the overrun is normal in the continuous run mode. blower switch is im continuous mode?

fuse or the switch

First of all check your fuses for the blower fan. If this seems alright, then check on the fan control switch. if not remove and see if the rheostat is faulty. loop to confirm or if not you will need to remove the blower unit for confirmation of the axial fan. Try and check one by one to get to the fault finally before you pull out the entire unit. hope you try this out.Good day

check the blower fuse? check for voltage at the switch (requires removing heater / ac controls from dash on most vehicles.)

hello,good day,first try to check your blower switch,if not corrected,your blower resistor is located at the bottom of your brake booster,ty

Strip fuse is blown should be by the driver side strut mount in a tootsie roll shape snap box. Or its the blower motor regulator which is under the blower motor.

If the fuse is blown for the blower then there is a short, that is not an answer, go to the blower and check to see that the blower motor connector has 12 volts to it when the blower is set to high speed on control, if it does then u need a new blower motor, if it doesn't then the control switch is defective or the blower motor speed control resistor is defective.

Very common fault was the blower regulator fails (blower resistor)