Operation of engine coolant heater and cabin heater

[fluff34567]

Hi all,

I asked on another forum but here there are more owners with my set up, so......

I have a multivan with the 2 heaters, one for engine and 1 for cabin heating, over here referred to stand heating /parking heating.

I have the small crappy lcd control in the roof by the rear view mirror.

Is the coolant heater Only to help heat the coolant when engine is running or is there some way to also heat the coolant when the van is parked and controlled via the overhead control Panel??

 

[Loz]

If you have both heaters then the engine heater only comes into action when the engine is started and the temperature is below 5deg.
The cabin heater and control panel are independent and optionally supplied with a remote and is powered by the leisure batteries.

If you had say a Touareg, that only had the engine heater, then this has a different module that also starts up a circulation pump and the blower to heat the interior and has a remote. It runs off the starter battery.

I did see a thread on the T6F that discussed the modification of the engine heater control module plus additional wiring to start the pump and blower, but I think the consensus was that not useful as a cabin heater as it drains the starter battery too quickly.

 

[fluff34567]

Cheers Loz, suspected I would see you on here.

Hmm that's a shame as would have liked a bit of engine preheating despite having the cabin heated separately.

 

[WelshGas]

Cheers Loz, suspected I would see you on here.

Hmm that's a shame as would have liked a bit of engine preheating despite having the cabin heated separately.

That can be done using a Timer or Remote but should be limited to 30mins BUT it involves flashing the Webasto Engine Coolant software so that it will no longer work automatically.

 

[fluff34567]

Can you explain a bit more the "not automatically" please?

 

[WelshGas]

Can you explain a bit more the "not automatically" please?

If the outside temperature drops to 5c or colder then the Webasto Coolant Heater starts up automatically as the engine starts and helps the engine coolant warm up quicker. It cuts off when the coolant gets to 80c or so. Thus the cab heating will warm the cab up quicker also has an effect on fuel consumption - better, and engine emissions - better.
The Webasto has a heater and electric pump to circulate the coolant to achieve a faster warm-up but is electrically power hungry. Not a problem with the engine and hence alternator working.

 

[fluff34567]

OK. Thanks, is it a simple vcds change or a complete reflash of software?

 

[Loz]

OK. Thanks, is it a simple vcds change or a complete reflash of software?

Its a reflash, there is a polish company who sells a kit on ebay that includes the additional wiring and a flash tool.

 

[fluff34567]

Do you have a link, I couldn't find it

 

[WelshGas]

Do you have a link, I couldn't find it

EBay listing

UPGRADE KIT FOR WEBASTO HEATER VW T5 CLIMATRONIC + REMOTE CONTROL TELESTART T91 | eBay

Find many great new & used options and get the best deals for UPGRADE KIT FOR WEBASTO HEATER VW T5 CLIMATRONIC + REMOTE CONTROL TELESTART T91 at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

Company website

Multivan T5 - Parking Heater Kits & Parts

www.carsystems.eu

 

[B J G]

Found this option
(quotes a LWB California and roof mounting aerial??)

Webasto Parking Heater Remote Upgrade - Climate - Advanced In-Car Technologies

T91 Telestart Remote Upgrade for Webasto Multivan Heaters with Climate Control

www.advanced-incar.co.uk

 

[clarinetbcn]

Roof mounted antenna will take you over 2m, if that matters to you. VW does this as an OEM option on the continent without the roof antlers, too bad it's not available in UK (used to be available on the Beach in the UK but not the Ocean, go figure). It might be worth it to see if you can retrofit the OEM VW version.

 

[fluff34567]

Thanks for all the replies, I should have said I have a T6, seems all. The mods are for a T5.

Know of anyone on the forum that's done the modification and has the 2 seperate heaters from factory?

 

[B J G]

Thanks for all the replies, I should have said I have a T6, seems all. The mods are for a T5.

Know of anyone on the forum that's done the modification and has the 2 seperate heaters from factory?

Wouldn't have thought that there was any significant difference to heater system between T5 & T6

 

[fluff34567]

Maybe different plugs, will send them a message anyway.

 

[WelshGas]

Maybe different plugs, will send them a message anyway.

Have a read here. I think it does work on the T6.

Webasto Auxiliary Heater - customizing

On my 2017 T6, I have a Webasto auxiliary/water heater and Eberspacher air/parking heater fitted at factory. The remote and timer only controls the Eberspacher air/parking heater. The Webasto aux/water heater only kicks in whilst the engine is running and the outside temp is 5 degrees or below...

www.t6forum.com

 

[clarinetbcn]

Have a read here. I think it does work on the T6.

Webasto Auxiliary Heater - customizing

On my 2017 T6, I have a Webasto auxiliary/water heater and Eberspacher air/parking heater fitted at factory. The remote and timer only controls the Eberspacher air/parking heater. The Webasto aux/water heater only kicks in whilst the engine is running and the outside temp is 5 degrees or below...

www.t6forum.com

Thank you, especially for this link, which was part of the above thread:

VAG SSP 416 – Supplementary Heaters – Part 2 Volkswagen Commercial Vehicles – Download In PDF For Free

VAG SSP 416 – Supplementary Heaters – Part 2 Volkswagen Commercial Vehicles Thermo Top Z/C Air Top 3500 Thermo Top V. Transporter – Thermo Top Z/C, Transporter – Air Top 3500, Caddy – Thermo Top V, Caddy – overview of supplementary heaters

procarmanuals.com

 

[clarinetbcn]

Have a read here. I think it does work on the T6.

Webasto Auxiliary Heater - customizing

On my 2017 T6, I have a Webasto auxiliary/water heater and Eberspacher air/parking heater fitted at factory. The remote and timer only controls the Eberspacher air/parking heater. The Webasto aux/water heater only kicks in whilst the engine is running and the outside temp is 5 degrees or below...

www.t6forum.com

This will also clear up some confusion, from the same thread:
mmi said: ↑

PS. In late MY18 (recently delivered) vans the low voltage cut-out configuration has been changed, see picture below. The both vans from where the codings (above and below) were grabbed have second battery from factory under left seat.

The reason probably is that in MY18 onwards the Webasto coolant heater is powered from starter battery (even with factory installed aux battery). In MY17 and before the power feed was from the aux battery (when factory installed). However there are some indications that the transition is not exactly at MY18/17 transition but within early MY18... EDIT: Wiring diagrams states that change is effective NOV-2017 onwards

 

[fluff34567]

Coming back to this, as I have a 2nd factory battery 2016 version so its used for the heater.

The kit shown in the link above, is it just plug and play?

The link gives me the impression its the telestart radio unit just to add the remote and not the reflash as mentioned earlier?

I contacted the company but didn't get a reply yet.

 

[fluff34567]

Can't edit the above post.. Just realised the link above might not be correct. There is a seperate T6 section on that site with totally different modules.