The main ventilation fan in my 2011 Vogue SE is squealing when going round right hand corners, so presumably the bearings are on the way out.
Can anyone tell me how much dash surgery is required to access said item? Are there any tips for lubricating the bearings, or is it a case of having to replace the whole unit? 2011 TDV8 4.4 Vogue SE in Galway Green with Black leather
1998 Saab 900 turbo convertible in Lime Gold with black leather

Try lubricating first I would. Remove pollen box under bonnet and you should see it in inside the exposed holes Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
New Defender D300 90
1974 Series 3 Lightweight = "Millie"
My preferred specialist: www.glenrands.co.uk
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I have the same issue. It's not the vent actuators or the mixers, just the cabin blower. Functions perfectly fine without bearing noise though, so was thinking they need a grease.

Would be interesting to understand what is involved too. 2015 Range Rover Autobiography 4.4 SDV8

If it's noisy when turning corners, that would suggest the impeller is catching on the casing, which in turn would suggest there is wear in the bushings - which can only be cured by replacement. It may be temporarily 'fixed' if you can get some viscous lubricant between the bushings and the motor shaft, but that would only ever be a temporary measure.

Temporary is perfectly fine by me Phoenix if it means the difference between doing the job in sub-zero temperatures or a lovely and warm spring day  2015 Range Rover Autobiography 4.4 SDV8

Plastic edges are definitely sharper in the cold...
I've never had to replace the twin axial fan - but, I did have to open one up after a customer's kids decided the windscreen vents were some sort of slot machine and started feeding coins into it whilst he was filling up with fuel...
I saw them once, they did look quite feral - and violently ginger.

Don't use WD-40 or similar, it'll make things worse as it will dissolve any remaining lubricant, better to use a spray grease that will 'set' to a high pressure lubricant, Wurth do one, I can't remember the code though.

My intention was to use some spray on lithium based grease, given it's pretty heavy duty.

I think the Wurth one is a silicone based grease. I also have spray-on silicone grease normally used for pads on cardiovascular equipment - again, designed for high speed and heat. 2015 Range Rover Autobiography 4.4 SDV8

I know the one you mean - it's not that! HHS 2000 is the one, had to look it up for my own curiosity.
https://eshop.wurth.co.uk/Adhesive-lubrica...m=hhs+2000

Thanks for the insight and suggestions. I’ll take a look via the pollen filter box and try lubricating it with something suitable. 2011 TDV8 4.4 Vogue SE in Galway Green with Black leather
1998 Saab 900 turbo convertible in Lime Gold with black leather

LowB - bomb down to Petersfield and I'll give you a hand on my drive  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
New Defender D300 90
1974 Series 3 Lightweight = "Millie"
My preferred specialist: www.glenrands.co.uk
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I took out the pollen filter assembly today and greased the fan bearings as best I could (didn't realise how tight the spot is, and needs the engine running or battery disconnected to stop the flaps closing).

Squeaking is reduced but still there. So, I think a summer job is to replace the fan. In all fairness, the fans clock up just as many hours as the engine, so it's reasonable to expect a replacement needed after 150,000 miles. 2015 Range Rover Autobiography 4.4 SDV8

Last edited by garyRR on 3rd Jan 2023 9:41am. Edited 1 time in total

Gary - will you do the "dashboard cut out" route to make it easier to remove and replace? Saves a lot of hassle I'm told.
Couple of youTube vids show it.
I'm sure you'll do a write up  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
New Defender D300 90
1974 Series 3 Lightweight = "Millie"
My preferred specialist: www.glenrands.co.uk
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Looks like it will be the cut-out method, given the plastic to be removed is just trim and doesn't support anything. Removing the entire interior, steering wheel and crossbeam seem far too excessive / greater potential to break something.

One to save for a sunny day.

The good news is that the motor is very inexpensive - £45 for an OEM BMW part, or £75 for the Nissens part. 2015 Range Rover Autobiography 4.4 SDV8

Your write up will be invaluable for others  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
New Defender D300 90
1974 Series 3 Lightweight = "Millie"
My preferred specialist: www.glenrands.co.uk
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