VW Crafter original factory fit aux heater to engine pre heater??

[G-A-R-Y]

I have a Grand California with the aux diesel heater controlled from above, this heats water in the cooling system and blows hot air out through the dash vents, it can be used three times a day upto 120 mins a day???(don't know why, perhaps battery voltage)
It is fitted centrally under the van and is just about silent in operation.

I think it's 5KW, I discovered it can also be used to aid/boost the heater with engine running too by simply pressing that same button.

When stationary it does not cycle the cooling system although the header tank does warm, it just heats the cab heater, is there a way to make this an engine/block pre heater.

Does this van have electric or manual water pump??

 

[G-A-R-Y]

Can anyone help with this.

 

[mmi]

Do you mean this one in below, or something else?

SSP 598 - Grand California - Truma Combi Heater

27 Oct 2022

VW Self Study Program

• Pauly
• grand california ssp 598 truma combi heater
• Vehicle Information

 

[G-A-R-Y]

No, it's a factory fit Webasto. It fits rear of engine down low. Can use the VW app to activate or by remote and via the overhead control panel. It then blows hot air through the screen vents, although the header tank gets warm it does not circulate the engine.

 

[mmi]

So possibly the coolant circuitry is as below - where 3/2 way valve is controlling whereto heated coolant flows.

Workshop Manual:

Crafter 2017 ➤, Crafter Grand California 2020 ➤, TGE 2017 ➤, TGE 2022 ➤​

Auxiliary/supplementary heater​

Auxiliary heater with one heat exchanger



I would experiment the possibilities to alter the way how 3/2 valve operates (by altering the heater coding) - to enable coolant flow also through the engine.

Below shown how the engine pre-heating can be activated on T6 Transporter.

[Guide] [T6_modified] T6 Webasto Aux/Parking (water) Heater Configuration with VCDS

From the factory T6 Webasto aux/parking (water) heater comes configured to heat cabin only. Up here in Finland the vans come with overhead control/timer panel to allow the use of timer or remote to switch on engine and cabin preheating before setting off. The heater is configured by dealer to...

www.t6forum.com

Below a Crafter's possibly having the engine pre-heating (Address: 18)

Maps - 2019 VW CRAFTER 2.0 TDI DAUA maps

Wednesday,22,May,2019,12:11:24:29066 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64 VCDS Version: 18.9.1.0 (x64) HEX-V2 CB: 0.4436.4 Data version: 20190114 DS296.0 www.Ross-Tech.com VIN: WV1ZZZSYZK9 License Plate: Mileage: 19435km-12076mi Repair Order...

forums.ross-tech.com

 

[G-A-R-Y]

Please keep researching this, also the problem with original webasto on Crafter is that is can only be used three times a day. Then you have to drive???

"When the vehicle is at a standstill, the auxiliary heater can be activated up to three times in succession with a running time of 60 minutes, for example. A complete heating operation with the maximum possible running time of 120 minutes can be performed only once in full when the vehicle is stationary. The auxiliary heater then prematurely switches itself off automatically or can no longer be switched on. In order to switch on the auxiliary heater again, you must first move the vehicle by a distance of around 30 m at a speed of at least walking pace."

my post

 

[Lebowski]

Ik tried to program it to be on more than once in one night and it didn't work, only one timeslot can be activated when they fall on the same calendar date.
A vcds tweak may change this but I'm totally guessing here.

 

[G-A-R-Y]

No, it can only be used upto three time in one location (max 120mins) then the vehicle must be started and moved more than 30mts at a speed greater than walking or you will get a warning. I found this somewhere.

When the vehicle is at a standstill, the auxiliary heater can be activated up to three times in succession with a running time of 60 minutes, for example. A complete heating operation with the maximum possible running time of 120 minutes can be performed only once in full when the vehicle is stationary. The auxiliary heater then prematurely switches itself off automatically or can no longer be switched on. In order to switch on the auxiliary heater again, you must first move the vehicle by a distance of around 30 m at a speed of at least walking pace.



It would be good if it could be an engine pre heater too.

 

[Lebowski]

Your vehicle most likely has different settings, but to be sure I'll test and film my findings as this is an interesting topic.