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Bmw 525d heater blower inoprative

Heater blower stop working

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With the blower turned on, try tapping the blower motor with something hard. If it restarts, then this is a failing motor. If it doesn't start, then check power to the motor. If it has power, then the motor has failed completely.

Posted on Nov 03, 2012

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SOURCE: 94 bmw 318iC Heater not working

1st thing to check is the coolant level. Low coolant level results in no, or little heat (not enough coolant to circulate thru the heater core). What does your engine temp gauge indicate? (or is it just a warning light?) If the car is running at what appears to be lower than normal temp., u may have a thermostat that's stuck open. This would cause the engine to not reach operating temp, and u would not have heat. Check the above 2 items 1st, then let me know what u found. If that doesn't fix it, we will continue, let's do the easy and not too expensive stuff 1st!

Posted on Nov 17, 2008

  • 1 Answer

SOURCE: heater blower not working

I don't know if this is a long-term solution but I found it on another "how-to" website: on my 2001 E46 I removed the fuse (#50) for one minute. Something about the transistors inside the FSU (final stage unit, or blower resistor) resetting themselves with the constant power removed. I replaced it and drove home, which is a 1-hr drive, and the fan was on steady the whole time. Which it hasn't done in the 3 yrs I've owned it. I tested it at other speeds and it worked well. Don't know how long it will last though. If not, you need to replace the Blower Resistor - there about $75.
www.bimmerwerkz.com is an excellent source of info! They have pics, utube video, and diagrams to help you.

Posted on May 29, 2009

  • 1 Answer

SOURCE: HEATER FAN ON BMW 323I HAS STOPPED WORKING 2000

FOUND SOLUTION ON WEBSITE INDICATING ELECTRICAL PART REQUIRED.

Posted on Nov 20, 2009

Danniboi
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SOURCE: heater not working on 1994 528i bmw but ac blower works

Hi it sounds like either the thermostat or the heater matrix, although if there is air in the system then this would also cause this fault. get the thermostat checked first as this could cause more damage if not fixed quickly.

The heater matrix or heater core may be blocked or not circulating the warm air, This is a more expensive job if it will not unblock.

Hope this helps
regards
dan

Posted on Jan 31, 2010

  • 10 Answers

SOURCE: 2003 E39 525d Blower not working

The most common issue is the final stage (electronic resistor) but if this has been replaced its probably the fan motor. Try giving the fan motor a knock. They sometimes get stuck brushes

Posted on Jun 05, 2010

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Heated rear window, rear window washer & fog lights not working on 2006 BMW E61 525d sport


I had similar problem and it sounds like a short, and a fuse is blown. Check your rubber wire housing at upper corners of rear hatch, in cold weather the rubber gets hard and comes away from hatch frame, and hard to notice, but what happens is wires rub on metal opening and short out. It took a couple fuses to figure out a short had to be problem, and sure enough, the hot lead was being grounded, so taped it up, reseated the rubber junction which is suppose to prevent shorts, should be obvious to check as mine was easy to see problem, seems pass side is trouble for some reason as I have helped others, and always the same side.
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The most common issue is the final stage (electronic resistor) but if this has been replaced its probably the fan motor. Try giving the fan motor a knock. They sometimes get stuck brushes

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Let's start with the basics, check blower motor and AC fuses and relays, also take a visual check to the wiring going to the Blower Motor (Firewall, passenger side). Look for broken wires and loose electrical terminals.

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1 Answer

Heater/blower died


When you find the fuse if it has blown also check the resistor to control the fan speed. I cant remember if the 1 series has a load resistor multi tap but it may have failed if you use 1 or 2 speed on the fan a lot, max will bypass the load resistor where as 1 will use maximum load and the thermal fuse might have blown. But replace it as caution. In the earlier models it had a block which was nicknamed the hedgehog, a load resistor buried under passenger foot-well up toward the centre, loads of spiky aluminum pegs which cold air blew over to cool it, always packing up in the earlier models £25 from scrap dealer cheap fix compared to the £££££££ BMW dealers rip off. Heater or air con would either not work or blow erratically. Hope this helps

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