Blower only works on full! - Page 2 - Ford B-Max Forum
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post #11 of 30 (permalink) Old 18th June 2019, 20:05
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it certainly looks to be the right part,
I haven't done the job myself, but I think the resistor is very close to the cabin filter. (just to the front of the car from said filter)
could either of you please take a couple of pictures while doing the job, and post them here, - thanks.
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post #12 of 30 (permalink) Old 18th June 2019, 22:40 Thread Starter
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Will do - not sure when I'll be doing it though, building up to it...

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post #13 of 30 (permalink) Old 21st June 2019, 18:20 Thread Starter
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I managed to get the thing out, mercifully there's only one screw holding it in but it's difficult to actually see into the space and undo the screw at the same time (especially as I have to wear 'reading' glasses for close work!)

Now the problem is that all the online sources I've found are out of stock...will have a look at eBay I suppose. I could try Ford but probably a lot more expensive than the other options...

Have added photos as requested, including the offending object which already had the bent bit when it came out. I don't have an AVO meter so can't tell if it's faulty, but presumably it is.
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B-Max Zetec Ecoboost
Deep Impact Blue
No-frills other than rear parking sensors...
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post #14 of 30 (permalink) Old 21st June 2019, 19:02
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ford parts list one at about 33.50
https://www.fordpartsuk.com/heater-fan-resistor
thanks for the closeup shots, could you please also take one showing where in the car it is.

in one of the pictures look like the component at the back has broken off
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post #15 of 30 (permalink) Old 21st June 2019, 19:17 Thread Starter
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Your link goes to a part that doesn't look at all the same and hasn't got the B-Max listed either as being compatible.

The second photo shows the footwell and mat, which is the best I could do to show the actual component in position.

The thing that looks 'broken' is just where the resistor (?) is attached and the metal connector is bent - I saw one for sale on the Ford site (see link) which was also 'bent' in the same way, so I wondered if it was deliberate in order for it to fit into the hole? However, even though it looks the same (and costs over 60) they don't show it as being compatible with the B-Max :-(

https://www.fordpartsuk.com/heater-resistor-6186

All the metal parts are quite stiff so it's not as if it's become bent on installation. Everything seems all securely attached and not broken.

I've put the panel back for now, but will take another photo when it's off, to show the footwell and mat from further away, which may help.

B-Max Zetec Ecoboost
Deep Impact Blue
No-frills other than rear parking sensors...

Last edited by Vannnie; 21st June 2019 at 19:23.
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post #16 of 30 (permalink) Old 21st June 2019, 20:31
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I did some checking on the parts lists
and you are right, its the more expensive "Heater Resistor - 1804471" for the bmax

and yes please a photo showing the general context/position of the switch, I guess lefthand footwell. (even just a picture of the panel that has to be removed while its still in place) should help others trying the same job.

many thanks!

ps parts list at
https://ford.7zap.com/en/car/48/no/0...0/70576/#18591
3rd item in list, and pictured bottom left as 18591.
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post #17 of 30 (permalink) Old 21st June 2019, 23:22
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Yep, cabin, odour and pollen filter are one and the same. I know 3 people who have had these symptoms and all were caused by a blocked filter. However, since yours has been replaced, it seems like the resistor is the likely culprit.
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post #18 of 30 (permalink) Old 22nd June 2019, 15:03 Thread Starter
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Here are some more photos to help others locate this thing - I've annotated them and will also add the previous pics again, showing the panel removed. Incidentally, I'm going to take the old resistor to a party tonight as the host used to work with me as a school science technician and has an AVO meter to test it with - want to confirm it's actually faulty before trying to locate another, being as they seem to be hard to come by.


Picture 1: - Passenger footwell showing the panel with one Torx screw (T27) to be undone. Then the side panel can be unclipped carefully

Picture 2: Close up of the T27 screw (partly undone)

Picture 3: The other end of the side panel by the seat runner, partly unclipped

Picture 4: Flexible soft cover beneath the glove box which can be removed easily by unclipping two push-on connectors near the front (fairly obvious what to do when you look) - allows a bit more visibility in that whole area with it removed

Picture 5: The corner of the footwell with cover on, to compare with the following photo showing the cover removed...

Picture 6: The same corner of footwell with the cover removed and the grey electrical connector unclipped. To unclip that, you have to press the middle bit in and pull it out of the socket at the same time (you can just see the white heater resistor and the screw you need to undo to remove it) - was a bit fiddly but I managed it

Screw is a Torx T20. I put the Torx 'bit' into a small socket (held in with Blu-tac to prevent it falling out), and connected it to small ratchet to make it easier to undo (see photo 9)

Picture 7: Close up of the heater resistor with the electrical connector still in position

Picture 8: Heater resistor with connector removed - shows how it clips into place at one end and then secured with screw at the other. I had to stick my phone into the gap to photograph this, not able to actually get my head near enough to see it, so I'm hoping I can put the new one in position by feel and then screw it in.

Picture 9: My bespoke tool
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B-Max Zetec Ecoboost
Deep Impact Blue
No-frills other than rear parking sensors...
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post #19 of 30 (permalink) Old 23rd June 2019, 00:42
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Managed to get mine out, but all the part numbers had worn off on it. Went to my local TMS and they didn't have the part in, the 3rd party part that was on there system wasn't even in stock with their supplier. Eurocarparts didn't have it either. Both said i'd have to go to a Ford dealer, which will probably cost . Can't find anywhere with it in stock at a reasonable price.
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post #20 of 30 (permalink) Old 23rd June 2019, 21:29 Thread Starter
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I contacted several online car breakers on Friday and had a reply today from one. They give a 90 day guarantee so hopefully the component will work once installed and if not I'll get a refund - they had good reviews, so sound reputable. Was about 17 including next day delivery - fingers crossed I can actually get it installed ok!

jonnypb, did you find it difficult to remove? Any tips?!

Funnily enough, as I said in a previous comment, I took the old one to a party last night to try and test it. I met my host's son who had trained as a motor racing mechanic a few years ago and then was the manager of a garage. He said that those parts all seem to go wrong on any make of car, particularly Renaults, I think. As I was showing it to him, another party guest said he'd just replaced something that looked the same in his daughter's VW. The ex-mechanic said that a garage might have to remove the whole dash assembly to replace it if they weren't able to do it by fiddling about the way we have - so would probably cost an arm and a leg as well as the cost of the part!

B-Max Zetec Ecoboost
Deep Impact Blue
No-frills other than rear parking sensors...

Last edited by Vannnie; 23rd June 2019 at 21:33.
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