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Vagcom303: No Connection to 1Z B4 - Troubleshooting

 
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macgyver68
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Post26-11-2004, 23:44    Subject: Vagcom303: No Connection to 1Z B4 - Troubleshooting Quote

Hello, icon_cry.gif

I have already used the search engine, but I only found results related to a baud rate of 240.
What does that mean? Is 'start baud' referring to the setting under options, which is specified as 0 there?

What other potential sources of error could there be? It worked immediately on the T4...

Best regards,
Manuel.


Translated on 02-08-2026, 15:11.
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dieselschrauber
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Post27-11-2004, 1:29    Subject: Vagcom303: No Connection to 1Z B4 - Troubleshooting Quote

Hello.

Quote:
Does "Start Baud" refer to the setting under options, which is specified as 0 there?

That's exactly what I was looking for, but you probably already tried that.
The remaining possible sources of error are the diagnostic adapter or the computer itself.
First, you should upgrade to the latest version of VAG-COM.

Since you probably have a 'simple' interface, if the above doesn't help, your only option is to upgrade to current hardware.

Best regards, Rainer.


Translated on 02-08-2026, 15:13.
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wolfi_b
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Post29-11-2004, 10:58    Subject: Vagcom303: No Connection to 1Z B4 - Troubleshooting Quote

Year of manufacture: before 1994 or 1994 or later?

I updated the interface to version 2.4 according to the ULF specifications.
It doesn't work with my (age less than 94) using the 303 setting, but it does work with the 311.2 setting.
ABS also works with the 303 as well.
The baud rate must be set to 240.
Try using a different computer.
1993 Audi 80 B4 1Z
2004 Seat Leon 1M ASV


Translated on 02-08-2026, 15:14.
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Hati
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Post04-12-2004, 14:06    Subject: Vagcom303: No Connection to 1Z B4 - Troubleshooting Quote

For my neighbor's B4 02.93, the following settings work perfectly with the 303-1:
Baud rate: 240.
Block-Int: 125
Character Limit: 3

The ABS and engine control unit are no problem in this case.


Translated on 02-08-2026, 15:16.
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Gremlin
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Post16-12-2004, 21:09    Subject: Vagcom303: No Connection to 1Z B4 - Troubleshooting Quote

*dust off*

I had the pleasure today as well...

VW Sharan '96, everything functional except the engine...

I only just read the settings now, as it was about the ABS (Anti-lock Braking System).

Version 311.2
Adapter kit from our local store.
'According to the LEDs, the EDC is not responding to the initialization command.'

CU Gremlin.


Translated on 02-08-2026, 15:17.
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dieselschrauber
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Post16-12-2004, 21:18    Subject: Vagcom303: No Connection to 1Z B4 - Troubleshooting Quote

Hi,

Why don't you use the included VAG-COM version 4091?
If it's not working, something must have been assembled incorrectly.

Best regards, Rainer.


Translated on 02-08-2026, 15:18.
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Gremlin
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Post17-12-2004, 20:41    Subject: Vagcom303: No Connection to 1Z B4 - Troubleshooting Quote

because

1. The absence of work-related joy was evident and easily discernible.
The available laptop had a battery charge of 311.2.
3. The CD along with the associated laptop (but NOT the one mentioned in point 2).
4. I don't like driving a car when I'm wearing dirty or messy clothes.

Okay:
5. I definitely wouldn't let that happen; I wouldn't allow myself to put something together incorrectly. icon_wink.gif

CU Gremlin.


Translated on 02-08-2026, 15:19.
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