OEM Webasto Auxiliary Heater To Parking Heater Upgrade

mmi · 12 Jul 2024

Vanarama said:
read that the overhead control/display has 4 connections, not 6.

Yes, 4 is correct for the parking (coolant) heater (2 for CAN, + 2 for the power).
Your wiring diagram is for the auxiliary air heater.

Vanarama · 12 Jul 2024

Thanks for your reply.

Is the CAN bus connection only for the coolant heater and the 4 non-CAN cables are for the Airtronic air blower?

Ie. There are 2 almost separate systems, or is the CAN bus used to coordinate combined operation?

Sorry if they seem like daft questions.

Thanks

eugene · 13 Jul 2024

Vanarama said:
Thanks for your reply.

Is the CAN bus connection only for the coolant heater and the 4 non-CAN cables are for the Airtronic air blower?

Ie. There are 2 almost separate systems, or is the CAN bus used to coordinate combined operation?

Sorry if they seem like daft questions.

Thanks

Air heater and water heater remotes work differently.
In case of water heater, CAN wires are connecting the remote to the car and controlling the heater via CAN.
In case of air heater, the CAN is used only to connect the remote to the car. The rest of the wires are used for controlling the heater by the remote.
Hope it makes sense.

What are you trying to achieve?

Vanarama · 13 Jul 2024

Thank you for your reply @eugene .

I have an almost complete set of parts including the coolant heater and the air heater. They date from around 2016, but are very good condition.

I am working on fitting them to a 2020 model.

I have studied the diagrams and I am piecing togther the missing information.

Ideally I would like to fit the air heater part and then later the coolant part.

However I realise that they have some crossover - eg, the harness between the blue (right vehicle side) and red connector (left vehicle side).

So fitting separately might not be realistic.

The remote control feature is secondary to me at this stage / not bothered.

I'm basically understanding how it works so I can weigh-up my options.

Thanks

eugene · 13 Jul 2024

Vanarama said:
Thank you for your reply @eugene .

I have an almost complete set of parts including the coolant heater and the air heater. They date from around 2016, but are very good condition.

I am working on fitting them to a 2020 model.

I have studied the diagrams and I am piecing togther the missing information.

Ideally I would like to fit the air heater part and then later the coolant part.

However I realise that they have some crossover - eg, the harness between the blue (right vehicle side) and red connector (left vehicle side).

So fitting separately might not be realistic.

The remote control feature is secondary to me at this stage / not bothered.

I'm basically understanding how it works so I can weigh-up my options.

Thanks

I am almost certain you already have a water heater. Please check it.
Air heater from 2016 won't be compatible with 2020 car. I think connecting it to a remote will still be possible but it won't talk to the car.
So I suggest you make a harness for the air heater including the CAN wires. If this brings a load of errors, you will disconnect the CAN wires and just use the remote to control the heater.

I think it will be an interesting project.

Vanarama · 13 Jul 2024

Thanks @eugene

Yes I do have the coolant and the air heater.

Thank you for your ideas.

I will investigate further.

The set came with:
Matching centre roof display/control unit
Webasto coolant heater+ pipes
Eber air heater
Trims
Ducts
Pumps
Etc

Regards

vollodymyr · 28 Feb 2025

avkcon said:
Here is my video and brief follow up:

Parts used:
1x VW Overhead display control unit for Webasto parking heater 7E5919037J:
View attachment 93107 View attachment 93108 View attachment 93109

1x 16-pin Connector for Overhead unit 1K0972928:
View attachment 93110

1x Telestart Module 3Q0963513:
View attachment 93111

1x Set of wire and Aerial for Telestart module:
View attachment 93112

1x Remote Control for Telestart 3G0963511B:
View attachment 93113

Wire set. Cross section 0.35mm for CAN-bus and 0.5mm for +12VDC and GND.
(CAN-bus cables shall be twisted together):

View attachment 93119

All connections and wiring were made according to the diagrams published in this thread.
I used T17p red plug under the driver's seat to make connection for both Overhead display and Telestart module.

Could you please share the full scan damp of your system. I have the same set and would like to double check the correct coding.

manders · 15 Mar 2025

Robert said:
And also ODIS-Engineering comparison(before and after the flash)

View attachment 62199

Hey what's the benefit of firmware upgrade here. Seems a bit of a faff to get done, but unclear if it's required or just some feature enabled I've missed?

manders · 23 Mar 2025

Robert said:

My aux heater details before flashing.

Code:

Address 18: Aux. Heat (J364)       Labels:| 7E0-963-27X-18.clb

   Part No SW: 7E0 963 273     HW: 7E0 963 273

   Component: STH-T5GP2     002 0007

   Coding: 4101

   Shop #: WSC 02759 790 50316

   ASAM Dataset: EV_AuxilParkiHeateWOST5G2 001010

   ROD: EV_AuxilParkiHeateWOST5G2.rod

   VCID: 6ADB74A98D7FEE1A6B-803E

         

Address 18: Aux. Heat

Control Module Part Number: 7E0 963 273

  Component and/or Version: STH-T5GP2     002 0007

           Software Coding: 4101

            Work Shop Code: WSC 02759

                      VCID: 6ADB74A98D7FEE1A6B-803E


Advanced Identification/FAZIT

     Identification: WOS-000

     Date: 16.09.15

     Manufacturer number: 2450

     Test stand number: 0894

Flash Status

     Programming Attempts(application): 1/0/0

     Flash Date: 00.00.00

Misc.

     Hardware number: 7E0 963 273

     Workshop System Name: J364

     Equipment/PR Code: 000000000000000000000000

     Dataset Number: -----------

     Dataset Version: ----

     ASAM Dataset: EV_AuxilParkiHeateWOST5G2

     ASAM Dataset Revision: 001010

VCDS Info:

       VCID: 6ADB74A98D7FEE1A6B-803E

       Labels: 7E0-963-27X-18.clb

       ROD: EV_AuxilParkiHeateWOST5G2.rod

My aux heater details after flashing(but before connecting Telestart)

Code:

Address 18: Aux. Heat (J364)       Labels:| 7E0-963-27X-18.clb

   Part No SW: 7E0 963 272 B    HW: 7E0 963 273

   Component: STH-T5GP2     002 0009

   Coding: 4101

   Shop #: WSC 02759 790 50316

   ASAM Dataset: EV_AuxilParkiHeateWOST5G2 001013

   ROD: EV_AuxilParkiHeateWOST5G2.rod

   VCID: 2B55B1AD4205371250-807E


Address 18: Aux. Heat

Control Module Part Number: 7E0 963 272 B

  Component and/or Version: STH-T5GP2     002 0009

           Software Coding: 4101

            Work Shop Code: WSC 02759

                      VCID: 2B55B1AD4205371250-807E


Advanced Identification/FAZIT

     Identification: WOS-000

     Date: 16.09.15

     Manufacturer number: 2450

     Test stand number: 0894

Flash Status

     Programming Attempts(application): 1/1/1

     Flash Date: 00.00.00

Misc.

     Hardware number: 7E0 963 273

     Workshop System Name: J364

     Equipment/PR Code: 000000000000000000000000

     Dataset Number: -----------

     Dataset Version: ----

     ASAM Dataset: EV_AuxilParkiHeateWOST5G2

     ASAM Dataset Revision: 001013

VCDS Info:

       VCID: 2B55B1AD4205371250-807E

       Labels: 7E0-963-27X-18.clb

       ROD: EV_AuxilParkiHeateWOST5G2.rod

Is this step required or desirable? I have a module, but can't tell if this step is crucial, what issue it overcomes.

Robert · 23 Mar 2025

manders said:
Hey what's the benefit of firmware upgrade here. Seems a bit of a faff to get done, but unclear if it's required or just some feature enabled I've missed?

As per thread title, the firmware update "converts" AUXILIARY heater into PARKING heater.

TALLANDREW · 4 Apr 2025

Robert said:
You just need to add your new unit in CAN Gateway(19) INSTALLATION LIST and then verify its own coding but default coding should work anyway.

I need a bit of help I am getting a persistent error from the roof mounted heater screen 6E which says control module EEPROM Error 014 - Defective.

I have installed the roof display and telistart into the cars wiring loom. I added the screen to the CAN Gateway(19) installation list using VCDS. I then cleared the codes and rescanned the car (engine running) all other errors seem to be clear but this error keeps returning.

The screen displays the time but non of the buttons do anything.

Should i press on with changing the coding on the Heater and do the heater firmware update or is my roof top screen defective. It was bought used from a breakers yard.

TALLANDREW · 6 Apr 2025

Thanks Robert for your reply on my other thread I will press on and see if it clears as it’s not totally dead.

manders · 12 Apr 2025

Hey Robert. So here's what i've got... (used your guide as a shopping list)

Receiver: 5Q0.963.513.A
FOB: 7N0963511 (T91R-WO9)

Flashed: FL_7E0963272B__0009.frf using VCS. (also 'sees' the T91 as a sub controller)
Coded: 5101 using VCDS

Connected 12V perm supply under drivers seat, tested with multimeter. Green/White (Red connection pin-1) connected to Pin-2 output.

OK.... so the problem, I can't get the T91 LIN to pair with the remote. Unplugged T91 blue connector, plug in wait-2 press 'off' for 1-sec.... NOTHING. Just flashes red.

Is there anyway to validate either component works?

manders · 12 Apr 2025

manders said:
Hey Robert. So here's what i've got... (used your guide as a shopping list)

Receiver: 5Q0.963.513.A
FOB: 7N0963511 (T91R-WO9)

View attachment 282701 View attachment 282703 View attachment 282704

Flashed: FL_7E0963272B__0009.frf using VCS. (also 'sees' the T91 as a sub controller)
Coded: 5101 using VCDS

Connected 12V perm supply under drivers seat, tested with multimeter. Green/White (Red connection pin-1) connected to Pin-2 output.

OK.... so the problem, I can't get the T91 LIN to pair with the remote. Unplugged T91 blue connector, plug in wait-2 press 'off' for 1-sec.... NOTHING. Just flashes red.

Is there anyway to validate either component works?

mmi · 12 Apr 2025

manders said:
OK.... so the problem, I can't get the T91 LIN to pair with the remote. Unplugged T91 blue connector, plug in wait-2 press 'off' for 1-sec.... NOTHING. Just flashes red.

The timing to press "off" after power on is fairly critical - not too soon, not too late.

Post in thread 'OEM Webasto Auxiliary Heater To Parking Heater Upgrade'

28 Jan 2022

Miguelpfdez94 said:
Also... i dont know if the remote is correctly paired with the receiver. when pressing of by 2 sec more or less red light blinks 4 times and if i press the on button the green light blinks again four time but... nothing happens...

It's not paired -

Either by VCDS or

Remote sync/learning:

1. Verify the remote: press OFF ▷ blinking red light on the remote.
2. Power OFF the controller (5Q0963513A or 3Q0963513) for at least 5 seconds. OEM setup fuse SC54 (7.5A)
3. Power ON the controller.
4. After approx. 2 seconds (but before 6 secs) press OFF on the remote for 2...

manders · 12 Apr 2025

mmi said:
The timing to press "off" after power on is fairly critical - not too soon, not too late.

Post in thread 'OEM Webasto Auxiliary Heater To Parking Heater Upgrade'

28 Jan 2022

Miguelpfdez94 said:

Also... i dont know if the remote is correctly paired with the receiver. when pressing of by 2 sec more or less red light blinks 4 times and if i press the on button the green light blinks again four time but... nothing happens...

Click to expand...

It's not paired -

Either by VCDS or

Remote sync/learning:

1. Verify the remote: press OFF ▷ blinking red light on the remote.
2. Power OFF the controller (5Q0963513A or 3Q0963513) for at least 5 seconds. OEM setup fuse SC54 (7.5A)
3. Power ON the controller.
4. After approx. 2 seconds (but before 6 secs) press OFF on the remote for 2...

mmi

Yup tried. Struggling. Did your comment say it can be done by VCDS?

Using stopwatch, but I assume the first thing you do after pairing is try to validate by holding on/off together for 3 seconds…. I get nothing.

mmi · 12 Apr 2025

manders said:
Yup tried. Struggling.

Well, I haven't verified on this specific pair of controller and the FOB. But I have done the pairing with the alternative controller: 3Q0 963 513 - so just assuming both to be the same.

manders said:
I assume the first thing you do after pairing is try to validate by holding on/off together for 3 seconds…. I get nothing.

Never heard about that - do you mean on the FOB?
The successful pairing would be indicated by steady red after pressing OFF again (or steady green by pressing ON)

manders said:
Did your comment say it can be done by VCDS?

Yes.
Basic Settings > IDE06650-Adapting RF transmitter
Possibly needs to activate "Security Access" before entering Basic Settings - just try without first.

As well as OBDeleven, VCP, ODIS can do.

eugene · 12 Apr 2025

manders said:
Yup tried. Struggling. Did your comment say it can be done by VCDS?

Using stopwatch, but I assume the first thing you do after pairing is try to validate by holding on/off together for 3 seconds…. I get nothing.

are you sure the battery is alright in the fob? if yes, you might have a faulty receiver/fob

manders · 13 Apr 2025

eugene said:
are you sure the battery is alright in the fob? if yes, you might have a faulty receiver/fob

New battery enroute. receiver/fob sourced independently, but parts are correct and at least some elements are responding well. LED on fob and receiver appears in VCDS & VCP.... so they're not totally bricked, but that's why i'm looking for a way to validate each component.

eugene · 13 Apr 2025

manders said:
New battery enroute. receiver/fob sourced independently, but parts are correct and at least some elements are responding well. LED on fob and receiver appears in VCDS & VCP.... so they're not totally bricked, but that's why i'm looking for a way to validate each component.

I have a few spare recievers if you face a dead end

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