jkj Posted November 6, 2022 Share Posted November 6, 2022 2014 520d F11 Really confused with this one! My blower fan only works occasionally and then never over setting 3. I have read here that this could be the final stage resistor/unit ( which I believe may be situated under the dashboard somewhere in ducting, and/or the blower resistor/controller situated under the fan blower motor. I cannot find any definitve instructions to change the final stage resistor /unit and some sites suggest this is not in the F11. which could be the reason there is no step by step instructions. That being said I have seen the units ( AKA 'hedgehog') for sale to fit 2014 F11. Beside the discomfort of having no heating/AC. my MOT runs out in 2 days and I doubt it will pass with a 'misted up' screen. Can someone please tell me: Does my car have both of the above and which one should I replace first to see if it solves the problem? Also: Can anyone provide a link to a guide on how to change these on F10/11 (the one in ducting) - I can only find items relating to E series cars ( that is why I'm wondering if F10/11's have them.) Getting a bit desperate now and any help would be gratefully received. Quote Link to comment Share on other sites More sharing options...
Stringbag Posted November 6, 2022 Share Posted November 6, 2022 It’s actually attached to the blower motor housing. No2 in the pic. Quote Link to comment Share on other sites More sharing options...
neil.o Posted November 7, 2022 Share Posted November 7, 2022 Haven't done this job myself, but handful of videos on Youtube, and looks OK to tackle even if you're chasing for MOT. Linked to one here on RHD car, looks like 520d . Narration by owners daughter - kudos to him getting kids involved! https://www.youtube.com/watch?v=OPSKcESWxTE best of luck @jkj Quote Link to comment Share on other sites More sharing options...
marko530d Posted November 7, 2022 Share Posted November 7, 2022 (edited) I replaced the whole unit on mine £45 on ebay with superceded part been fine ever since mine had burning smell on max. Very easy job I had done a write up on old forum. Correct resistor is attached to bottom I have my old 1 in shed. Edited November 7, 2022 by marko530d 1 Quote Link to comment Share on other sites More sharing options...
jkj Posted November 11, 2022 Author Share Posted November 11, 2022 Hi and thanks to all. As it turns out it was the fan motor. No smell of burning or anything - just failed. Took about 2 hrs whole job. 1 Quote Link to comment Share on other sites More sharing options...
AndrewToo Posted November 13, 2022 Share Posted November 13, 2022 (edited) Changed my blower motor too on Saturday. Problem solved. Gave the housing a good clean and also managed to get a heap of leaves and crap out from the car side channels. The resistor looked a bit dirty too so I gave it a wee clean too. Glad you got sorted too. Edited November 13, 2022 by AndrewToo Quote Link to comment Share on other sites More sharing options...
jkj Posted November 14, 2022 Author Share Posted November 14, 2022 Hi Andrew Thanks for comment. The thing that confused me was being pointed to the 'Hedgehog resitor' as the possible cause. (a reply to my original question - can't remember which forum) I now don't think these are fitted on the F10/11. I did change the resistor as you photo as I arleady had replacement but then realised it must be the motor. All now working fine. Got both from ebay so probably Chinese but at a fraction of the price. 1 Quote Link to comment Share on other sites More sharing options...
AndrewToo Posted November 15, 2022 Share Posted November 15, 2022 Me too bud. EBay prices make maintenance more manageable. Good time to get it done before winter hits too. Quote Link to comment Share on other sites More sharing options...
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