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.

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.

Why does my Mercedes-Benz A / C blower run uncontrolled?

But under fault conditions it could fail as ‘always on’ or ‘never on’. Mostly (according to this forum) a failed BR causes the a/c blower to run uncontrolled. Btw your WIS a/c circuit diagram is not identical to mine for W208. However the blower motor/regulator part is the same.

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 does my blower run when the car is turned off?

When full of debris/leaves/twigs/etc from over the years, it backs up and oddly enough, diverts drain water (rain, carwash, etc) just above the passenger footwell…which happens to coincide with where the blower resistor/regulator is located. Hence, water + electric component more often than not = failure. Click to expand…

Why do things stay on when the ignition switch is off?

Help would be appreciated. Two things can cause items powered by the key in the ON position to stay on with the key off. 1. First suspect is the IGNITION SOLENOID. Find it. It is “turned on/off” by receiving 12 VDC positive from the ignition switch.

What causes the a / C blower to run uncontrolled?

Mostly (according to this forum) a failed BR causes the a/c blower to run uncontrolled. Btw your WIS a/c circuit diagram is not identical to mine for W208. However the blower motor/regulator part is the same. Still the Regulator?

Is the ignition switch on my Fleetwood Revolution?

Having a problem with the ignition switch on my 2009 Fleetwood Revolution, on a Spartan chassis. It will shut down all right, but at times certain things will stay on, such as the power to blower fan, GPS, and other electrical items. How would I verify, that it is the switch?

What makes a fan blower motor not work?

There was no rust in mine. A lot of dark black brush residue, couple pieces of what appeared to be small leaves, and dirt. The fan motor parts themselves were very clean after I knocked on the concrete floor to knock the debris out. I think the lube and cleaning made the difference.

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 when the lowest fan speed stops working?

Like on mine, the lowest fan speed no longer works, but the rest do. That’s the blower resistor. When that goes bad the highest speed will still work because the current goes directly to the blower motor, not through the resistor.

Why does my car blower motor not shut off?

If you have a vehicle with climate control system and a variable speed blower motor and the blower motor won’t shut off and stays on HIGH with the car turned off and the key out, chances are the blower motor motor control processor is toast or the HVAC control module is damaged.

What to do if your climate controlled blower wont shut off?

If your climate controlled blower processor is shot, be prepared to spend mucho bucks for a replacement. But before you start throwing expensive parts at the problem, you’ll have to do some checking. Start by testing the gray/black wire at the blower motor control processor. First, try grounding the wire. Then try removing it.

How much does it cost to replace a blower motor?

However, if the blower continues to run at high speed with either of those tests, replace the blower motor control processor. Just as an FYI, the retail price of the blower motor control processor is $280.34. There are a few places online that rebuild these puppies.

How does the processor work on a blower motor?

The processor is what lets you select and infinite range of blower speeds. In vehicles without climate control, you’ve only got three blower speeds and those are controlled by a blower motor relay.

Why does my blower motor keep running after I shut off the car?

Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off. These conditions may be caused by a blower motor control module failure.

What happens when you pull the ignition key on a blower?

When it goes, the blower will run continuously unless you pull the fuse. You’ll need to check the schematic for your car to see what is in that circuit, but the module or relay would be the best guess. In the meantime, pull the fuse. It is the heater/AC blower. It continues to run with the key out of the ignition.

What happens when you pull the fuse on a blower?

When it goes, the blower will run continuously unless you pull the fuse. You’ll need to check the schematic for your car to see what is in that circuit, but the module or relay would be the best guess. In the meantime, pull the fuse. Brown25 July 6, 2016, 3:01am #7 It is the heater/AC blower. It continues to run with the key out of the ignition.

Is there a way to turn off the blower motor?

My blower/heater motor switch will not turn off the blower nor willl it change the motor speed. It’s currently stick on high. Even if I turn the engine off and take out the keys the blower is still running. I had to discoinnect the battery to get it to stop.

How do you get a broken car key out of the ignition?

Step 2: Lubricate the lock. Spray some lock lubricant into the lock cylinder. Step 3: Slide the key extractor tool into the lock. Slide the broken key extractor tool into the cylinder of the lock, with the hook end pointed up. Step 4: Turn the extractor tool. When you feel the extractor tool stop, you’ve reached the end of the lock cylinder.

What causes a fuse to blow on a blower motor?

If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.

What causes a bad or failing blower motor relay?

Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…

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.

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