Q: My 1999 BMW blower comes on whenever I put keys in the switch and turn the motor on.

asked by on October 06, 2016

My 1999 BMW blower of the AC or heater comes on whenever I put keys in the switch and turn the motor on.

My car has 270000 miles.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I use shuffle mode?
Activating shuffle mode couldn’t be easier. Simply press the SET/RND button while you’re listening to a CD, and the CD player will automatically enter shuffle mode.
At interstate speeds van sways; has difficult steering & control
Losing the ability to control the van in low wind speeds is an abnormal issue. There are a few faults that could cause this issue though. The most common would be low tire pressure (https://www.yourmechanic.com/article/how-to-check-your-tire-pressure), failing suspension component (https://www.yourmechanic.com/article/how-to-inspect-your-suspension-system), or...
Engine light is on, suspect catalytic converter
If your catalytic converter was having an issue as diagnosed by the dealership and it has been modified to correct the issue with no success, I would start by recommending a replacement of the catalytic converter (https://www.yourmechanic.com/services/catalytic-converter-replacement). It would also...
My automatic 2009 Jeep Wrangler shows 4 codes: P0562, P0306, C00377 & B2100.
Hi there, thanks for writing in. I would suggest replacing the battery first. A battery at 10V usually means one of the cells has failed. The P0306 code (https://www.yourmechanic.com/article/p0306-obd-ii-trouble-code-cylinder-6-misfire-detected-by-jay-safford) points out a misfire on cylinder 6. Since it is only...
My battery cables are to short to reach the battery can I just add some wire or do I have to replace the whole thing
Hello. I would recommend purchasing and installing the correct length cables (https://www.yourmechanic.com/services/battery-cable-replacement) to avoid any potential connection issues when adding additional battery cable wire. As you may know, there are different thicknesses of electrical wire required for different loads of...
Change interior lights and now it won't start.
Hi there. There is a short in the switch to the interior lights (https://www.yourmechanic.com/services/courtesy-light-switch-replacement) causing the fuse box to burn fuses and make the car not start up. If you need further assistance with your electrical system, then seek out...
Leakage on my transmission? 2008 Cadillac CTS
Hi there - check all your fluid levels, but check your engine coolant level (https://www.yourmechanic.com/article/how-often-do-i-need-to-top-off-my-coolant) most closely. The coolant GM uses for your engine (Dexcool) is, in fact, orange - not pink as most transmission fluids. Engine coolant will evaporate,...
ABS system light is on along with traction control light on 2005 pontaic grand prix. is this serious?
Hi there. When these lights are illuminated, it usually means that there is an issue with your ABS sensor or ABS module. The traction control and ABS both are monitored by the ABS module or control unit. Since the ABS...
03 Saab 9-5arc 3.0t backfiring and has no power to drive. CEL blinking. I can hear the backfire under the hood and the tail pipe
Hi Steve. Thanks for taking the time to contact YourMechanic.com today. I think the root source of these issues is the catalytic converter to straight pipe conversion that was completed. Unless the previous owner reprogrammed the ECU (which is highly...

Related articles

Why Won't My AC Blow Cold Air?
When you turn on the air conditioner in your car, you expect to receive a flow of fresh, cold air....
How Long Does a Condenser Fan Relay Last?
The The condenser fan relay allows the cooling fan to pull air through the radiator and the condenser to cool the vehicle. This part is connected to the condenser fan and is normally used when the air conditioner in the...
How Does a Car Air Conditioning System Work?
Auto air conditioners serve well on hot summer days to make driving more pleasant by cooling the air and removing excess moisture in the car.