faulty heater fan control - Ford B-Max Forum
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post #1 of 13 (permalink) Old 20th August 2017, 21:22 Thread Starter
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Hi, control will only work on 4 setting not on the first 3, any ideas how to fix it ?
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post #2 of 13 (permalink) Old 21st August 2017, 12:43
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Haha, ive come across this problem a couple of times now and on both occasions fitting a new pollen filter has cured it.


B Max Titanium X 1.0 125 bhp in Magnetic with built in SatNav and rear sensors.
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post #3 of 13 (permalink) Old 21st October 2017, 12:41
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Hello there,
I have just joined this club looking for info. re: the same issue. I have been told that the issue is the 'heater blower motor resistor'. So I went to ford and bought one (50 odd quid!!!!!) was told to look behind the glove box but I cannot see anything that looks like it. Were you able to fix yours and if so any help in locating it would be greatly appreciated. Can anyone else offer some help in uncovering/locating the isolator?
Thanks in anticipation :-))
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post #4 of 13 (permalink) Old 21st October 2017, 12:58
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Did you not try the pollen filter first? Just take it out and see if it works.

B Max Titanium X 1.0 125 bhp in Magnetic with built in SatNav and rear sensors.
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post #5 of 13 (permalink) Old 21st October 2017, 15:53
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Thanks cianpars,
That does sound strange unless its perhaps an airflow restriction caused by the pollen filter ??!! Haven't opened the resistor packet yet so can always take it back. Will give your idea a go - once storm Brian s*ds off :-)
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post #6 of 13 (permalink) Old 22nd October 2017, 17:07
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Update on heater blower resistor:-
It was the resistor in my case, all done and working again on all fan settings.
For information the resistor is NOT behind the glove box as a well-meaning friend suggested. To access remove the side panel (passenger side) to the centre console (one star screw and multiple push clips). Then get your head on the floor looking toward the bulkhead, then look up and 'slightly around the corner' behind the heater controls and you will see a white rectangular piece of plastic with a lead plugged in and also held by one star screw. Remove, replace and re-fix (it helps if you are a contortionist, otherwise it is not the easiest job to do) and use a torch/inspection lamp! Whoever in Ford designed this needs a good slap :-))
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post #7 of 13 (permalink) Old 22nd October 2017, 17:40
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Thanks David, may be useful info for someone. Whoever designed the B Max needs a slap, full stop. Wait til you have to try to change a light bulb Edited by: cianpars

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post #8 of 13 (permalink) Old 20th January 2018, 16:25
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Thank you ever so much.. this has probably saved me
100.
Luckily I'm small and fairly
flexible, I managed to manoeuvre myself
with a bike torch and head torch, I located
the "white rectangular piece of plastic with a lead plugged in and also
held by one star screw".
Once
removed the white plastic and resistor, my husband checked the resistance which
showed it burnt out, we searched on e-bay and bought a new one for 20.
Once it arrived it took me (yes me, not my
husband) 5 minutes to fit and put back the side panel. [img]smileys/smiley1.gif[/img]


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Suzie
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post #9 of 13 (permalink) Old 21st January 2018, 10:45
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Well done Suzie, this seems to be a common problem with the B-Max. Still it's a great multi-use vehicle in my opinion. Since replacing my resistor have had no further problems with it - hopefully you will find the same now!
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post #10 of 13 (permalink) Old 23rd January 2018, 23:59
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Blower resistor failure is clearly a problem common to Fords in general.
I had to replace that part on my 07 Focus twice in seven years of ownership, and getting to it, then putting back the panels and things that I had to remove for access resulted not only in sore fingers, but a lot of very choice language.


Well done for sorting it!


Edited by: desthemoaner
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