Retrofit Telestart T90 on T5GP ThermoTopC: recognized, but does not start

[eugene]

Try 4 units Telstart and thermo test run webasto with wbus I understand what block webasto

View attachment 233002

Unfortunately, due to language limitations, it's hard to understand what you mean.
There could be several things that go wrong with your setup.

1. Your webasto mainboard might be dead. Test it with webasto sw.
2. The telestart units on the photo might not be compatible.
3. Telestart units might be dead.
4. The remote might not be compatible

What I can see from the photo:
1. Your remote is DEFINITELY not compatible with all of the telestart units. It might be compatible with 2 of them but I don't know for sure.
2. Some of telestart units I think are also not compatible.

I think if you don't have the skills in this stuff, starting with a naked board and a bunch of non-matching remotes/telestarts might be a bit of a too ambitous goal...

Good luck!

 

[TomSab]

All ECU work. remote adaptation to telestart no problem with ODIS!Webasto Start with engine, or WTT communication via Wbus no problem, with odis webasto test OK.
Telestart compatible no problem I VW telestart instal to Mercedes and webasto start!
In my webasto with diagnostics remote wisible when touch ON in remote!
the same problem that he described at the beginning

 

[eugene]

All ECU work. remote adaptation to telestart no problem with ODIS!Webasto Start with engine, or WTT communication via Wbus no problem, with odis webasto test OK.
Telestart compatible no problem I VW telestart instal to Mercedes and webasto start!
In my webasto with diagnostics remote wisible when touch ON in remote!
the same problem that he described at the beginning

Switching back from PM.
I am not a pro but this is what I would do:

1. Test it with vcds (or odis) & check errors. Manually start it without engine running. If ok go to step 2.
2. Connect w-bus to the webasto thermo test and try to start using w-bus.
If this is working, your heater is fine and the problem is with Telestart.

3. Connect Telestart w-bus version and and try to start heater using Telestart WITHOUT remote. To do this, you short pin 4 to 12v on pin1. If webasto doesn't start, you have a failed Telestart unit.

 

[Peterb84]

I have same problem do you solved this?
I try buy webasto ECU 7E0815071A and 7E0815071C and no possible start heater via remote...in kufatec site is possible remote install upgrade heater!
I have T5.1 2014 try coding engine,webasto,climatronic and no possible start webasto via remote...

I have not looked further into this on my van. However I came across a quite extensive description on a Polish forum (Google translate works fine to understand): http://www.touranklub.pl/forum/viewtopic.php?f=18&t=28

From that description I learnt two things:
- it is not possible to start a "Zuheizer", but only a "J737__Standheizung", as the former is programmed to not start with engine off. However we both have the latter version, so it should work? Or is the xxx 071 heater still incompatible (?)...
- there might be a need to attach a wire from the heater (pin 8) to the Airco panel*. Perhaps it needs to be able to talk to it (start condition)... (* or only necessary for Climatic?) I have a Climatronic panel. However I could not find this is the wiring schemes of Webasto / VW. In fact, installation manuals do not say this is necessary for Climatronic...

In one upgrade manual I found:
"Before parking the vehicle, make the following settings:1 Set temperature to "max."2 Air outlet to windscreen3 Set fan to level "1", or possibly "2 "
Perhaps this is a prerequisite to be able to start?..

 

[Peterb84]

Switching back from PM.
I am not a pro but this is what I would do:

1. Test it with vcds (or odis) & check errors. Manually start it without engine running. If ok go to step 2.
2. Connect w-bus to the webasto thermo test and try to start using w-bus.
If this is working, your heater is fine and the problem is with Telestart.

3. Connect Telestart w-bus version and and try to start heater using Telestart WITHOUT remote. To do this, you short pin 4 to 12v on pin1. If webasto doesn't start, you have a failed Telestart unit.

I appreciate your input. However not sure if it means the Telestart is defective in that case. I can see in VCDS that the Telestart is connected, and it provides a feedback on pin4 after setting pin3 high. So Telestart seems to do what it should do, yet, the heater does not start...

 

[eugene]

I appreciate your input. However not sure if it means the Telestart is defective in that case. I can see in VCDS that the Telestart is connected, and it provides a feedback on pin4 after setting pin3 high. So Telestart seems to do what it should do, yet, the heater does not start...

What happens during step1 when you try to start heater through vcds?

 

[Peterb84]

What happens during step1 when you try to start heater through vcds?

Sorry, I do not regularly check this forum..

To answer this: via a VCDS start it runs completely fine, and there are no errors. Also, after an attempt to start using T90 it does not give errors. Would be nice to be able to readout more on the Telestart status, but I cannot find something related to that in the channels (the label file is not complete either; I am already using the German version which has more labels).

 

[enkor]

Were you able to solve it? I'm having the same problem. I installed Telestart T91R on my WV T5.1 and Webasto reports that the remote is detected. I tried to start it with PIN4 but it does nothing. Unfortunately I don't have FOB and I was hoping that I can start it manually with PIN4.

 

[eugene]

Were you able to solve it? I'm having the same problem. I installed Telestart T91R on my WV T5.1 and Webasto reports that the remote is detected. I tried to start it with PIN4 but it does nothing. Unfortunately I don't have FOB and I was hoping that I can start it manually with PIN4.

Which city are you from?

 

[TomSab]

Were you able to solve it? I'm having the same problem. I installed Telestart T91R on my WV T5.1 and Webasto reports that the remote is detected. I tried to start it with PIN4 but it does nothing. Unfortunately I don't have FOB and I was hoping that I can start it manually with PIN4.

Hi I buy Ori set Telstart from net and webasto go ok...my ECU Telstart no support t5 webasto.

 

[enkor]

Which city are you from?

Kousek od Hradce Kralove


I'm not sure if the Telestart can be started with PIN4 shorted to +12V. I found old kkl cable , so I hook up Thermo Test between telestart and webasto and I cannot see any communication in protocol (However, I used it for the first time, so I'm not sure if there should be anything.)

When I start webasto from Thermo Test as parking heater, it turns on and climatronic also turns on. So this part works as expected.

When I unplug Telestart, vcds shows an error with the RC connection. So it looks like the device is communicating.
The Telestart 91R has the same part number as the one I found at etka, so it must be compatible.

I assume everything is working correctly and I just need FOB to make it work. But I'm not 100% sure and I don't want to buy it just to test it. I also read that it's a lottery to buy FOB.

I found some OSS projects to control webasto from arduino/esp32.

GitHub - H4jen/webasto: Arduino project to control webasto heater via W-bus

Arduino project to control webasto heater via W-bus - H4jen/webasto

github.com

GitHub - stuartpittaway/WebastoWBUSInterface: Hardware circuit diagram for interfacing to the Webasto WBUS interface from a PC/Arduino

Hardware circuit diagram for interfacing to the Webasto WBUS interface from a PC/Arduino - stuartpittaway/WebastoWBUSInterface

github.com

Jakob K. / WBusLoraRemote · GitLab

A DIY alternative for the "Webasto Telestart". Using two ESP32 equipped with Lora. Using my webastoController as a fundation. See my webasto controller: https://gitlab.com/jfk344/webastocontroller

gitlab.com

Maybe I can leave telestart as it is and just use arduino to kick the webasto just like with thermo test. If it will work then it would be easy and cheap to build my own RC.

 

[eugene]

Kousek od Hradce Kralove


I'm not sure if the Telestart can be started with PIN4 shorted to +12V. I found old kkl cable , so I hook up Thermo Test between telestart and webasto and I cannot see any communication in protocol (However, I used it for the first time, so I'm not sure if there should be anything.)

When I start webasto from Thermo Test as parking heater, it turns on and climatronic also turns on. So this part works as expected.

When I unplug Telestart, vcds shows an error with the RC connection. So it looks like the device is communicating.
The Telestart 91R has the same part number as the one I found at etka, so it must be compatible.

I assume everything is working correctly and I just need FOB to make it work. But I'm not 100% sure and I don't want to buy it just to test it. I also read that it's a lottery to buy FOB.

I found some OSS projects to control webasto from arduino/esp32.

GitHub - H4jen/webasto: Arduino project to control webasto heater via W-bus

Arduino project to control webasto heater via W-bus - H4jen/webasto

github.com

GitHub - stuartpittaway/WebastoWBUSInterface: Hardware circuit diagram for interfacing to the Webasto WBUS interface from a PC/Arduino

Hardware circuit diagram for interfacing to the Webasto WBUS interface from a PC/Arduino - stuartpittaway/WebastoWBUSInterface

github.com

Jakob K. / WBusLoraRemote · GitLab

A DIY alternative for the "Webasto Telestart". Using two ESP32 equipped with Lora. Using my webastoController as a fundation. See my webasto controller: https://gitlab.com/jfk344/webastocontroller

gitlab.com

Maybe I can leave telestart as it is and just use arduino to kick the webasto just like with thermo test. If it will work then it would be easy and cheap to build my own RC.

You might have a faulty Telestart unit or something else. I have had success with pin 4 on the telestart unit that I tested. For reference, can you please post the pic of your telestart unit?

Please do post your result if you try the arduino path.

There are also 3rd party w-bus devices on ebay sold for cheap. You can hookup a remote control from Aliexpress and that would be the most budget-friendly option to contro the webasto in a T5. Unofortunately, not an option for T6 because another w-bus firmware from webasto will need to be flashed.

 

[enkor]

You might have a faulty Telestart unit or something else. I have had success with pin 4 on the telestart unit that I tested. For reference, can you please post the pic of your telestart unit?

Please do post your result if you try the arduino path.

There are also 3rd party w-bus devices on ebay sold for cheap. You can hookup a remote control from Aliexpress and that would be the most budget-friendly option to contro the webasto in a T5. Unofortunately, not an option for T6 because another w-bus firmware from webasto will need to be flashed.

This is the unit. 7N0963513.

Can you please send me the name ot the w-bus devices? I cannot find anything.

 

[eugene]

This is the unit. 7N0963513.

Can you please send me the name ot the w-bus devices? I cannot find anything.

Yeah, this unit should work. Ideally you would test it with the fob, but it costs at least 50 eur. Might be worth the investment if you need this functionality.
Did you also try to connect an LED to PIN 3 and ground? This would show you if the telestart has been switched on.

W-bus modules (quite a few producers):

Webasto W-Bus online kaufen | eBay

Tolle Angebote bei eBay für Webasto W-Bus. Sicher einkaufen.

www.ebay.de

 

[enkor]

Yeah, this unit should work. Ideally you would test it with the fob, but it costs at least 50 eur. Might be worth the investment if you need this functionality.
Did you also try to connect an LED to PIN 3 and ground? This would show you if the telestart has been switched on.

W-bus modules (quite a few producers):

Webasto W-Bus online kaufen | eBay

Tolle Angebote bei eBay für Webasto W-Bus. Sicher einkaufen.

www.ebay.de

I tried to put multimeter on PIN3 and there is nothing. According to this website WEBASTO THERMO TOP Instalacja - Auto Solar Telestart T91R does not have analog output on PIN3. It seems that T91R is some kind of low cost version. I think that PIN4 works only with devices which support external clock.

If I were sure it would work with the fob, I would buy it. But for now, I will try arduino since I have most of the stuff at home.

 

[oldiebut goodie]

T91R is linbus, not low cost, (canbus) only not W-bus or analogue AFAIK. Funkfernbedienung as a little guidance. And VW T6 - Zusatzheizung Einstellungen

you need the remote control to talk to the Telestart receiver to make it switch on/set number of hours/level of heating.

 

[eugene]

T91R is linbus, not low cost, (canbus) only not W-bus or analogue AFAIK. Funkfernbedienung as a little guidance. And VW T6 - Zusatzheizung Einstellungen

I think the following are all supporting W-bus (not the LIN version):

• 9036327A (Telestart T99)
• 9019609B, 9019509D, 9027437A (Telestart T91/T100)
• 1K0963513, 1K0963513A (Telestart T91/T91R)
• 9006744A (Telestart T90)
• 4F0909509, 4F0909509A, 4F0909509B, 7N0963513, 7N0963513A, 7N0963513B (Telestart T90)

 

[oldiebut goodie]

Webasto Telestart T91 / T91-LIN​

The Telestart T91 is available in three versions that differ in the output signal:

Output signal: +12V, W-BUS and LIN-BUS

Webasto Telestart T91-LIN (new version)​

The new version of the Telestart T91-LIN is used in the current VAG vehicles.

Output signal: LIN-BUS

 

[eugene]

Webasto Telestart T91 / T91-LIN​

The Telestart T91 is available in three versions that differ in the output signal:

Output signal: +12V, W-BUS and LIN-BUS

View attachment 264449

Webasto Telestart T91-LIN (new version)​

The new version of the Telestart T91-LIN is used in the current VAG vehicles.

Output signal: LIN-BUS

View attachment 264450

I am not contradicting this. The egg-shaped is unfortunately the only way to go for T5. But there are 2 types of egg-shaped remotes. If you use receiver with VW logo - egg-remote needs to have a VAG logo.

The question is - why is the reciever unit not working for @enkor . I suspect it's a faulty unit.

 

[oldiebut goodie]

I think that he needs the remote to get any signal out of the receiver to the heater otherwise the receiver does not know what signal to send to the heater.