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Post by kucharp on Jul 9, 2023 20:05:07 GMT
In the Passat B8 from 2021, it displays information about the loss of air exactly to the wheel. And in Skoda fabi from 2023, in the event of air loss, it shows only general information to check the air in the wheels, it does not tell you exactly where. I NOTE that the Passat does not have sensors in the wheels, I checked and I do not have a pressure reading either. In both cars, the information comes from the ABS based on wheel rotation. Therefore, I have a question about what and where needs to be changed in the adaptation or coding in Skoda so that it informs exactly in which wheel the air loss is.
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Post by dv52 (Australia) on Jul 9, 2023 22:23:55 GMT
kucharp : Hi. Yes, you are correct - VAG cars that don't have actual pressure sensors physically screwed into the tire valves use an algorithm based on a comparison of each wheel's rotation rate as a surrogate for low tire pressure detection.
From memory (and I'm not really certain), I think that the fix for identifying the problematic wheel is in the Brake module. I suggest that you check the setting for the adaptation channel Tire pressure monitoring display. ONLY if the factory setting on this car is 1 - maybe try changing to 2Don
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Post by kucharp on Jul 11, 2023 9:14:06 GMT
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Post by dv52 (Australia) on Jul 11, 2023 21:26:26 GMT
hmm........ none of those channels are appropriate. Skoda fabi has a MQB A0 platform build - so I assumed that the Brake module would be similar to other MQB platform cars. Maybe I was wrong? Does your MY23 Fabia have SFD (meaning is the car built on a MQB evo platform)?
Don
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Post by kucharp on Jul 12, 2023 18:30:55 GMT
Fabia is produced in 2023. Where could I check if it's MQB Evo? I compared that with my Passat 2021 and there is the tan channel you wrote about in the first post and in Fabi these adaptation channels look like before. It is also interesting that the higher Fabia 4 models, for example Syle, have information exactly about the wheel. I wonder what the Adaptation protocol looks like in them.
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Post by dv52 (Australia) on Jul 12, 2023 23:29:21 GMT
You can check if your Fabia is MQB-evo and therefore if it has SFD - like this:
- Fire-up OBD11 software and connect to dongle
- Select a key module like the central electrics module
- Select live data and there should be an option ''SFD activated status'' (use the search facility) - if this entry is missing from the list, the car doesn't have SFD
Don
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