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Iceboy74



Member Since: 20 Sep 2023
Location: Berkshire
Posts: 25
United Kingdom 2015 Range Rover Vogue SE SDV8 Santorini Black
AC only cold on passenger side L405 4.4 SDV8

Hi All,

I noticed yesterday, that the AC ice cold on passenger vents but warm on the drivers side.

Ive tried to sync the AC to a single front zone and turned up temperature and then turned down but no effect.

Does anyone know how to fix this issue? Not ideal in this heat and I'm doing a lot of driving at the moment.

Iceboy
Post #720083 20th Jun 2025 2:15pm
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Tomo676



Member Since: 07 Aug 2018
Location: Aberdare, South Wales.
Posts: 61
United Kingdom 2010 Range Rover Vogue TDV8 Ipanema Sand

That's strange, ive just noticed it with my 2017 v8 as well.
Could it possibly be one of the blend motors ?
Should be able to check with a gap tool ?
Post #720087 20th Jun 2025 2:54pm
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Iceboy74



Member Since: 20 Sep 2023
Location: Berkshire
Posts: 25
United Kingdom 2015 Range Rover Vogue SE SDV8 Santorini Black

I have an obd reader but what is a gap tool?

I need to stay cool on my 4 hour drive on Sunday.
Post #720088 20th Jun 2025 3:10pm
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Tomo676



Member Since: 07 Aug 2018
Location: Aberdare, South Wales.
Posts: 61
United Kingdom 2010 Range Rover Vogue TDV8 Ipanema Sand

Gap iid tool, look it up, very expensive, but will save a fortune.
Post #720089 20th Jun 2025 3:17pm
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fisha



Member Since: 25 Sep 2009
Location: Scotland
Posts: 1504
2015 Range Rover Autobiography SDV8 Aruba

Diverter valve failing. It sits under the fuel burning heater. Covered in this thread.

https://www.fullfatrr.com/forum/topic73065.html V8 or else ...
Post #720101 20th Jun 2025 5:27pm
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ChrisJC



Member Since: 14 Sep 2023
Location: Northants
Posts: 148
United Kingdom 2014 Range Rover Vogue SDV8 Aintree Green

Or low on refrigerant.

Mine was cold on the passenger side only, so I had it recharged and it works just fine now.

Chris. L405 - 4.4SDV8 Vogue
P38 - 4.6V8 HSE
Land Rover series IIA V8
Post #720190 22nd Jun 2025 3:56pm
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Full-fat-Lance



Member Since: 06 Feb 2022
Location: Essex
Posts: 146
United Kingdom 2011 Range Rover Autobiography 4.4 V8 Orkney Grey

Had similar in my l322. Drivers went warm first, then passenger and then rear. Regas last year and it’s ice cold now.
Post #720205 22nd Jun 2025 7:21pm
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fisha



Member Since: 25 Sep 2009
Location: Scotland
Posts: 1504
2015 Range Rover Autobiography SDV8 Aruba

A regas would be the easiest first option to check. V8 or else ...
Post #720210 22nd Jun 2025 9:03pm
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