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Tom1973



Member Since: 30 Dec 2019
Location: Tampere
Posts: 6

Finland 
Cabin Heat issue solved

Hi, maybe this will help to someone who have problems to get heat inside.

I have L322 4.4L gasoline (2003) with aux heating. Lost interior heating gradually during summer and now when autumn arrived, its started to be really cold to drive.

Symptoms: Engine heats normally but no heat to inside, aux heater was running for only short period.

Checked the water pipes which goes to inside heater matrix. Some of those pipes where mild warm some just cold (tad difficult to check as engine was really hot next to hand).
Water valve behind the engine (pita to change) was the issue. It controls which water goes to heater matrix (engine or aux heater). the seals inside were swallowed and blocked.
I ended up changing also dual water valve next to suspension tower (easy to change) as it's old and cheap.
Recommended to buy BMW valves as those are cheaper than RR versions.

Below some pics.

Post #568241 28th Sep 2020 9:38am
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Tom1973



Member Since: 30 Dec 2019
Location: Tampere
Posts: 6

Finland 

small valve behind engine



Somehow pics are not uploading??

Post #568242 28th Sep 2020 9:40am
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Tom1973



Member Since: 30 Dec 2019
Location: Tampere
Posts: 6

Finland 

Here are the EOM codes for the Water Heater Control Valve LR066865 / LR040731 / JEO000010 / 6421690744402

Post #568244 28th Sep 2020 9:43am
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p38arover



Member Since: 16 Dec 2015
Location: Western Sydney
Posts: 1516

Australia 2004 Range Rover Vogue 4.4 V8 Adriatic Blue
Re: Cabin Heat issue solved

Tom1973 wrote:

Water valve behind the engine (pita to change) was the issue. It controls which water goes to heater matrix (engine or aux heater). the seals inside were swollen and blocked.


Aux heater?

Tom1973 wrote:
I ended up changing also dual water valve next to suspension tower (easy to change) as it's old and cheap.
Recommended to buy BMW valves as those are cheaper than RR versions..


BMW part nos.? Ron B. VK2OTC
2004 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

Post #568271 28th Sep 2020 11:59am
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Tom1973



Member Since: 30 Dec 2019
Location: Tampere
Posts: 6

Finland 

Aux heater = webasto (fuel burning heater)

BMW code for heater valve is 6421690744402

Post #568276 28th Sep 2020 12:55pm
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p38arover



Member Since: 16 Dec 2015
Location: Western Sydney
Posts: 1516

Australia 2004 Range Rover Vogue 4.4 V8 Adriatic Blue

Thank you.

Was the FBH only on diesel powered vehicles? Ron B. VK2OTC
2004 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

Post #568473 1st Oct 2020 5:36am
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Tom1973



Member Since: 30 Dec 2019
Location: Tampere
Posts: 6

Finland 

FBH was option for gasoline version too, just more rare and maybe only for Nordic countries (mine is that).

Post #568480 1st Oct 2020 7:49am
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p38arover



Member Since: 16 Dec 2015
Location: Western Sydney
Posts: 1516

Australia 2004 Range Rover Vogue 4.4 V8 Adriatic Blue

Does it have a separate diesel fuel tank or does it burn petrol? Ron B. VK2OTC
2004 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

Post #568481 1st Oct 2020 8:03am
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Tom1973



Member Since: 30 Dec 2019
Location: Tampere
Posts: 6

Finland 

it burn petrol

Post #568490 1st Oct 2020 10:11am
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Dolphinboy



Member Since: 07 Dec 2009
Location: Bristol
Posts: 3035

United Kingdom 2011 Range Rover Vogue TDV8 Atacama Sand

I have one too on my UK 2004 AB. It was an option (and a bloody god one too!!)

It runs on Petrol.

Post #568492 1st Oct 2020 10:48am
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p38arover



Member Since: 16 Dec 2015
Location: Western Sydney
Posts: 1516

Australia 2004 Range Rover Vogue 4.4 V8 Adriatic Blue

Thanks gents. Ron B. VK2OTC
2004 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

Post #568703 3rd Oct 2020 12:59am
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