Is it possible to program the L322 (TDV8, 07) to utilise the FBH as an auxiliary/engine pre heater instead of a parking heater when activated by remote prior to starting the engine?

On my previous L320 TDV8, the FBH was used as an aux heater to pre-heat the entire engine prior to starting.

I've had a look withi the IID tool settings and can't find anything that would allow that to be selected?

Many thanks

I’ve not heard of that before. I know it comes on once you have started the engine to help it warm up in cold weather.

We’re there extra options for running it on the L320 then?

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Doesn't the FBH heat the cabin by heating the coolant & thus the heater matrix?

IIRC it has a pump to circulate the coolant whilst the engine is off. 2010 Range Rover Autobiography TDV8 Santorini Black
2010 Range Rover Autobiography TDV8 Zermatt Silver [Gone]
2003 Range Rover HSE Oslo Blue [Gone]
1985 Camel Trophy 90 (Netherlands Team Vehicle) [Gone]
1990 Camel Trophy 127 (Workshop Vehicle) [Gone]
1989 Camel Trophy 110 (Workshop Vehicle) [Gone]
1998 Camel Trophy Freelander (South African Team Vehicle)
1995 Camel Trophy Discovery 300Tdi (Raft Unit) [Gone]

Yeah, but I’m imagining the question is for the engine only. I can’t imagine the L320 having a different system to the L322 though. It can heat the engine coolant with the engine off, but only when it’s heating the interior also.

I put the instructions for the FBH into the Wiki a bit back… pretty sure there is nothing in the instructions either.

https://www.fullfatrr.com/gallery/albums/u...rt-t91.pdf

https://www.fullfatrr.com/gallery/albums/u...er_fbh.PDF

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Last edited by mjdronfield on 31st May 2022 6:48pm. Edited 1 time in total

The early L319 / L320 have different plumbing, the FBH was only intended as a boost heater when the engine was running and the exterior temperature below 4 deg. C., consequently, if a remote control or timer was added, due to there being no coolant valves to control the circulation dependent on the running / parked state of the vehicle, the whole coolant circuit was heated, thereby pre-heating the engine. L322 was specifically designed to have park heating (and has the valves and control logic to allow it) as well as boost heating for the engine. Later L319 / L320 have the option in some markets for park heating with or without remote control, these also have the correct plumbing so that all the heat is directed into the cabin and not 'wasted' on the engine, I suppose you could bypass the valveset so that the engine is pre-warmed (heated is a bit of a stretch) if you really wanted to.

Alas last winter here was the mildest I've known so I only used the FBH / remote on mine once (apart from making sure it worked).

Interesting bit in that manual about the changeover valve; "A changeover valve allows the heater coolant circuit to be isolated from the engine coolant during parked heating, to reduce the warmup time of the passenger compartment". Which seems to indicate my belief that it just heated / circulated coolant (via the engine) was wrong. 2010 Range Rover Autobiography TDV8 Santorini Black
2010 Range Rover Autobiography TDV8 Zermatt Silver [Gone]
2003 Range Rover HSE Oslo Blue [Gone]
1985 Camel Trophy 90 (Netherlands Team Vehicle) [Gone]
1990 Camel Trophy 127 (Workshop Vehicle) [Gone]
1989 Camel Trophy 110 (Workshop Vehicle) [Gone]
1998 Camel Trophy Freelander (South African Team Vehicle)
1995 Camel Trophy Discovery 300Tdi (Raft Unit) [Gone]

The FBH (Thermo Top C in L322, Thermo Top V in early L319 / L320) has a circulation pump, if this is not detected as running in park heating or boost heating, the FBH will shut down,.