Why does blower motor keep running when car is off?
voltage is reduced by the value of the each resistor based on the position of the fan switch. The downside of blower motor resistors is that, in order to reduce voltage, a resistor converts the energy into heat. These days cars can’t afford to waste that energy—there are simply too many electrical accessories to run.
Why does fan come on when heater is off?
If your blower is constantly turning on/off when the furnace isn’t heating… …you most likely have a bad fan limit switch. The system uses a “temperature probe” to detect temperature changes inside the heat exchanger (see image below) and turns your blower on and off in response.
Where is the blower motor control module?
It’s located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.
Why is my blower on when I Turn Off the ignition?
If your blower for interior is on immediately after you turn off ignition THEN WORRY. This would be the symptom that does kill the battery. The transistorized fan speed controller can fail and run blower until battery is dead.
Can a blower motor run when the car is off?
I searched the forum, followed the advice of others and replaced the motor control attached to the side of the blower, pulled the blower itself and cleaned the brushes (they we not too warn, so I didn’t replace) but the problem continues.
How long does a Mercedes Benz blower fan run?
Pressed the switch again, the blower fan stopped again for a few seconds, then resumed the lower speed. The owner’s manual notes the fan may run for up to 30 minutes in warmer temperatures. Left it for an hour – still running at the low speed.
What to do if your YouTube heater is stuck?
Heater Blower Stuck on after key is off…FIXED! – YouTube Heater Blower Stuck on after key is off…FIXED! If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.