My heating or air con doesn't seem to work when I'm traveling at low speeds (below 50mph) but when I start traveling a bit faster its begins to work and the fans start blowing stronger aswell. What could be the problem? 2018 SVR

my guess is your fan has stopped working all together.! when you speed up its that, thats making you think your fan is working but i guess its not.! check fuses or relays for the heater

Do you know where I'll find the fuse box? Assuming fuses are fine will it be a big expensive repair?

Thanks 2018 SVR

it's behind the lower glove compartment RRS HSE TDV6 Autobiography

Checked the fuse, seems to be fine, what else could it be? 2018 SVR

Is it the blender. I know other members have reported issues with them failing. Not sure if that matches your symptoms though  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
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What is the blender? Where can I find it to check it?

Thanks 2018 SVR

errmmm.... technical is not my forte
I believe they are under the dashboard, possible near the steering wheel on the drivers side and behind the glove box on the passenger side.

Couple of threads here:
http://www.rrsport.co.uk/forum/topic27848.html?highlight=blender
http://www.rrsport.co.uk/forum/topic25825.html?highlight=blender

Also stick +blender in the search box  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

I changes my blender motor 2 weeks ago.
Got cold air on right side and warm on left.

Its a straight forward job

My 56plate is left hand drive and the motor was located on the side of pedals RRS 2006 2.7 HSE

Thanks guys, I'm getting cold air from all vents including rear and heated air only when I'm traveling over 50mph. Is there more than one blender or will I just need to replace the one? 2018 SVR

Think its one left and one right. One under the glowbox and one near pedals.

My left one fixed the problem with cold air at back and on front left side. RRS 2006 2.7 HSE