How do I Turn Off the blower when the car is off?

Pull ignition key, blower remains off for 2-3 seconds, then starts running at lowest speed. Press “rest” switch – button lights, fan runs at higher speed. Press “rest” switch again – fan stops, then starts again at a lower speed. Something higher up in the power chain is providing power when the ign. switch is off and the fan switch is off.

Why does my electric heater fan not shut off?

This comes directly from the ignition switch on the green/yellow strip wire so it looks like the switch is failing to disconnect. Try pulling fuse #20 in the battery junction box. This is a 50 amp square fuse that will be hard to remove.

Why is the ignition switch on my blower not turning off?

How do you disconnect a blower motor?

Turn the key in the OFF position. 2. Reconnect the blower motor speed control that you disconnect in the last step. 3. Disconnect the DATC/EATC module, connector C228a (see below). 4. Disconnect the blower motor relay (look in your manual, but I believe it’s relay 6 in the fuse box). 5.

Why does my blower motor not shut off?

Took my climate controls out and the fan continued to work, ended up pulling the 40amp fuse in the engine bay to shut it off so I don’t kill my battery. Whats the problem? Bad harness? Relay?

Why does my Furnace Fan not shut down?

If the furnace tries to start but cannot keep running then there is a different problem such as no fuel or an unsafe condition. On 2020-03-04 by (mod) – blower motor on air conditioner will not shut down. Have you checked for shorted wires anywhere in the control circuit? blower motor on air conditioner will not shut down.

Why does the fan shut off when I Turn Off the ignition?

Try pulling fuse #20 in the battery junction box. This is a 50 amp square fuse that will be hard to remove. If the blower then turns off the ignition switch needs to be replaced. when I went out and turned the fan control switch nothing came on. I turned the ignitionon and the fan on it came on. I turned off the ignition and everything shut off.

Is the blower fan running when the AC is off?

This is with the blower switch on the off position and heater/ac on off. I can use the blower motor switch and put it to low/med/high and everything works fine but again the blower motor is running on low speed as soon as I turn key to the on position.

How long does a car heater blower stay on?

The blower is supposed to stay on for a few minutes after the car is off. Look in your owners manual. I think it’s primarily for cold weather, it keeps the car interior warm until the heater core completely cools down. Not to say you don’t still have a problem separate from that.

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 happens to the lead in the blower when the car is off?

The three prong connection that attaches to the regulator should always have power from the red lead, the brown lead is ground, and the white/pink strip lead is controlled by the fan switch. With the car off, and the fan switch in the “off” position, there should be no power to the white/pink lead.

Can a blower motor controller keep running after you shut down the engine?

If your car uses a blower motor controller, it can keep running the blower motor after you shut down the engine. Those used to be installed only on vehicles with automatic climate control with variable speed fans, but now they’re installed on many late model vehicles. How a blower motor controller differs from a blower motor resistor?

How does a blower motor reduce the speed of a fan?

In a vehicle equipped with a blower motor resistor, voltage is reduced by the value of the each resistor based on the position of the fan switch. The lower voltages result in lower fans speeds. The downside of blower motor resistors is that, in order to reduce voltage, a resistor converts the energy into heat.

Why does the blower motor keep running after I Turn Off the car?

Why does the blower motor keep running after I turn off the car? If your car uses a blower motor controller, it can keep running the blower motor after you shut down the engine. Those used to be installed only on vehicles with automatic climate control with variable speed fans, but now they’re installed on many late model vehicles.

Can a Silverado blower stay on with the key off?

The HVAC blower in this 2003 Silverado stays on speed 5 even with the key off. Here’s how to turn speed 5 of the blower off (while keeping speeds 1-4) and hopefully this will save you from replacing the battery. NOTE: GM issued a special coverage policy for this problem which covers the repair for 10 years or 150k miles, whichever comes first.

How does a blower motor controller work on a car?

It’s really a simple concept: the blower motor controller pulses either the power or the ground circuit on and off depending on which fan setting you choose.

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.

Is the blower motor fan running when off?

It should always be running at a low speed, it is designed to run on a low voltage. My 77 fan always runs when the ignition is turned on. 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there! Chevrolet called it AstroVentilation. They do that. Its normal. All of them with A/C

Why does the fan turn on when the furnace is on?

This will cause the fan to automatically turn on when the furnace is heating and shut off once the call for heat stops. If your fan limit switch was already set to AUTO (not pressed in), then you most likely either have a problem with your thermostat wiring or the fan limit switch is bad.

What happens when the ignition switch is off?

Generally speaking, in the “OFF” position, the ignition switch doesn’t connect anything; in the “ACC” position, the radio or fan may be energized; in the “RUN” position, the engine control module is energized; and finally, in the “START” position, the starter relay is engaged. (These generalizations, depend significantly on year, make, and model.)

How long does it take for Furnace Fan to stop blowing?

This shuts the furnace down and prevents your thermostat from calling for more heat. If the furnace was in the middle of a heating cycle, wait 3 to 4 minutes for the blower fan to stop running. Did your furnace fan stop blowing?

Why does my car blow when the car is off?

My wife’s car 2002 SLK 230 had the same problem. If you sat in the car with everything off, key out of ignition, every few seconds the heater fan would blow for a few seconds. (Though it didn’t always do this) If the car was left for a few hours the battery would go flat.

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.

What should I do if my blower won’t shut off?

Refer to either the Blower Motor Control Processor Replacement or Blower Motor Processor Replacement-Auxiliary procedures in SI. After replacement of the blower motor control module, the customer may notice a slightly higher than expected blower motor speed at any of the blower speed settings.

Why does my blower motor keep running high?

More than likely you have a control processor issue, which is basically the resistor. The HVAC control module is to send the speed control signal to the processor which then changes the fan speed. When this shorts it usually puts the fan to high speed.

How do I Turn Off the blower when the car is off?