Webasto! Why won’t it work on its own…. VCDS enabled??

For clarity
The Depronman DUAL remap only
00002 is a mild remap and 00005 the full remap

I would recommend using 00002 in the winter when the webasto is needed and also the full remap is not really needed or desirable
Swap to 00005 in the spring when webasto is not needed and full power/torque is desirable

The earlier Depronman Single remaps have the remap on both 00002 and 00005

Obviously I cannot speak for any other remaps

Cheers. Paul


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Well I think ive found why mine doesn't fire up....

20231201_073433.jpg


The request for fuel has put a strain on the ancient pump system and appears to have ripped pipe out!! Thought I caught a whiff of fuel yesterday...is this dangerous even if I switch econ on?
 
CrispyEdd said:
Well I think ive found why mine doesn't fire up....

View attachment 115910

The request for fuel has put a strain on the ancient pump system and appears to have ripped pipe out!! Thought I caught a whiff of fuel yesterday...is this dangerous even if I switch econ on?
Click to expand...

Econ on will prevent the webasto running and therefore the fuel pump running so should be ok until you can get it sorted properly


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Howey said:
Many thanks Tom very informative!!

Does this mean any remapped ecu with the full power map will be set to 0005, so if you buy a new to you car is simply checking with setting the ecu is showing a fail proof way of telling if the car is remapped?

A YouTube video of this procedure would make great viewing lol!!

Cheers

Howey (Tom)
Click to expand...
Morning Tom,

Paul has pretty much answered the question already but I’m open to creating a clip to host on here that talks you through the process. It won’t be until after the weekend though.

If you want a hand then I’ll be in Wakey this afternoon/evening if your want to stop by mate.

Kind regards,

Tom
 
2work said:
Morning Tom,

Paul has pretty much answered the question already but I’m open to creating a clip to host on here that talks you through the process. It won’t be until after the weekend though.

If you want a hand then I’ll be in Wakey this afternoon/evening if your want to stop by mate.

Kind regards,

Tom
Click to expand...
Many thanks Tom

That's very kind of you, sadly I am not available what with work and children collecting lol would have been wonderful to finally meet you!!

Using my supervag the webasto has a glow plug fault have cleared that and will see if it helps! I have the original ecu so will also swop back to that if the above fails lol!!

Warmest wishes!! (pun intended)

Tom
 
depronman said:
For clarity
The Depronman DUAL remap only
00002 is a mild remap and 00005 the full remap

I would recommend using 00002 in the winter when the webasto is needed and also the full remap is not really needed or desirable
Swap to 00005 in the spring when webasto is not needed and full power/torque is desirable

The earlier Depronman Single remaps have the remap on both 00002 and 00005

Obviously I cannot speak for any other remaps

Cheers. Paul


Sent from my iPhone using Tapatalk
Click to expand...
Smashing!!

Will see if I can switch to 0002
 
CrispyEdd said:
Well I think ive found why mine doesn't fire up....

View attachment 115910

The request for fuel has put a strain on the ancient pump system and appears to have ripped pipe out!! Thought I caught a whiff of fuel yesterday...is this dangerous even if I switch econ on?
Click to expand...
is it line from pump to heater snapped? if so just disconnect pump plug so it won't pulse and pump fuel if decides to activate webasto
 
depronman said:
Ok so the combined knowledge of this great community and some reasoning and experimenting appears to have arrived at a conclusion

There are a number of parameters which must be met for the webesto to kick in
Engine coolant temp below 6 deg C as seen by the webasto (not the engine ecu) and not greater than 80C (again as seen by the webasto)
Engine revs above 600rpm (never an issue on the tdi as the ecu keeps it at 925 give or take)
Control panel not set to econ

There is however another (as far as I’m aware not documented) criteria. The engine ECU must be on coding 00002
I’ve no idea why this is the case but changing nothing else except the coding from 00002 to 00005 stops the webasto firing up
Change the coding back to 00002 and the webasto fires up

All 1.4TDI’s A2’s came out of the factory with the engine ecu coding set to 00002
As such the webasto is able to operate when the above criteria are met.
The problem comes, if for any reason eg a remap, the coding is changed to 00005
This was unknown to myself until earlier today

I can’t prove this on my own car as some investigation with vcds yesterday evening revelled the webasto is faulty in that the temperature reading is constantly on 112 deg C which it definitely wasn’t last night and this must be lower than 6 and less than 80

Thanks to all who have contributed to the above thread

Paul


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Click to expand...
The coolant <80C is an engine ECU condition for aux heater. >80C, and the ECU will shut the aux heater down.
Does the Webasto has the same, but independent parameter setting in its own controller?
Mac.
 
PlasticMac said:
The coolant <80C is an engine ECU condition for aux heater. >80C, and the ECU will shut the aux heater down.
Does the Webasto has the same, but independent parameter setting in its own controller?
Mac.
Click to expand...
mine tried to fire up lsast night even though coolant was 56 deg so imagine figures are correct either way
 

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It would be very helpful to know the resistance at 20C, then you can widen the sources, ensure quality, and reduce the price.
I have just bought thermistors for the heated seats, and they are enclosed in an epoxy bead, which gives mechanical strength, and water resistant. I bought them from https://www.mouser.co.uk/
Probably 10K, buy a multimeter check is needed, with one leg off the pcb.
Mac
 

8Z0261163 is the code for the feul pump assembly I believe. Looking at some for sale online second hand they are usually a complete rust festival, not surprising hanging under the car like that with no protection. Looks like I need one, circa £45 refurbed....adn then some new piping..​

 
depronman said:
Ok so the combined knowledge of this great community and some reasoning and experimenting appears to have arrived at a conclusion

There are a number of parameters which must be met for the webesto to kick in
Engine coolant temp below 6 deg C as seen by the webasto (not the engine ecu) and not greater than 80C (again as seen by the webasto)
Engine revs above 600rpm (never an issue on the tdi as the ecu keeps it at 925 give or take)
Control panel not set to econ

There is however another (as far as I’m aware not documented) criteria. The engine ECU must be on coding 00002
I’ve no idea why this is the case but changing nothing else except the coding from 00002 to 00005 stops the webasto firing up
Change the coding back to 00002 and the webasto fires up

All 1.4TDI’s A2’s came out of the factory with the engine ecu coding set to 00002
As such the webasto is able to operate when the above criteria are met.
The problem comes, if for any reason eg a remap, the coding is changed to 00005
This was unknown to myself until earlier today

I can’t prove this on my own car as some investigation with vcds yesterday evening revelled the webasto is faulty in that the temperature reading is constantly on 112 deg C which it definitely wasn’t last night and this must be lower than 6 and less than 80

Thanks to all who have contributed to the above thread

Paul


Sent from my iPhone using Tapatalk
Click to expand...
Paul does the webasto log a fault code when engine ECU is set to 00005? I have a glow plug fault but fitted the cars original ECU but no joy, however when I checked the status of the original ecu it states 10005, would that mean it's been mapped?

My trouble is I have not driven my A2's without the maps lol
 

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Howey said:
Paul does the webasto log a fault code when engine ECU is set to 00005? I have a glow plug fault but fitted the cars original ECU but no joy, however when I checked the status of the original ecu it states 10005, would that mean it's been mapped?

My trouble is I have not driven my A2's without the maps lol
Click to expand...
Mine did and its of the 0000005 variety, i had no flame.
 
Howey said:
Paul does the webasto log a fault code when engine ECU is set to 00005? I have a glow plug fault but fitted the cars original ECU but no joy, however when I checked the status of the original ecu it states 10005, would that mean it's been mapped?

My trouble is I have not driven my A2's without the maps lol
Click to expand...

Howey said:
Paul does the webasto log a fault code when engine ECU is set to 00005? I have a glow plug fault but fitted the cars original ECU but no joy, however when I checked the status of the original ecu it states 10005, would that mean it's been mapped?

My trouble is I have not driven my A2's without the maps lol
Click to expand...

No the webasto doesn’t log a fault code if the engine ecu is codes to 00005 but the webesto will not start when commanded to do so from the engine ecu

The 10005 I’m assuming is a fault code from the Aux heater control module (18) which is physically the webasto.
Suggest investigating the 100005 code

Paul


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depronman said:
No the webasto doesn’t log a fault code if the engine ecu is codes to 00005 but the webesto will not start when commanded to do so from the engine ecu

The 10005 I’m assuming is a fault code from the Aux heater control module (18) which is physically the webasto.
Suggest investigating the 100005 code

Paul


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Click to expand...
No that's not a fault code it's the engine ecu information, when remapping is "5" the obvious number to select, confused as to the 10005 rather than 00005, I am assuming the vehicles original ecu may well have been remapped by a previous owner?
 
The engine ecu will only accept 00002 or 00005

Where is the other number coming from ?


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