[potatohead]

Do we know the OBD codes or anything about how the issues are tracked? I’m still having some issues after the updates and having a really hard time advocating for myself with my dealership.

 

[potatohead]

Most issues you have to show the problem to the dealer service advisor. If you describe what problems you are seeing you might get some help here about how to show the dealer. If they saw the issue and won't do anything, calling VW customer care often helps.

Recently it is the screen going blank, the car sometimes failing to sense me when I am sitting in it during charging, the windows rolling the wrong way, the tire pressure sensors appear to be overactive, the brakes are still really wacky (eg they slam on inappropriately during safe reversing)…

BTW does anyone else have incredibly squeaky brakes? Ours have been crazy squeaky since we bought it. I used to be embarrassed that that was mentioned in my repair records…but it is so severe that it is back to being annoying. I have owned the car since 2023 July - never gotten better.

 

[potatohead]

This can be caused by a weak 12v battery. Mine has gone bad at 2 years old twice now and causes a variety of strange things including a blank screen, without giving any 12v low messages even as it drops to 11.5v. The trick is to test it under load while disconnected from the car.

Have you reset the TPMS under Vehicle-Tires? You need to do this anytime you change the pressure more than a few psi.

Mine have always been completely quiet, so they must have changed something about them. Or my semi-desert dry climate avoids the problem.

Ugh. Back again. Never. Buy. A. Car. In. Illinois. Ever. We would have qualified for VW’s own buyback program in so many states- but VW is taking advantage of our lemon laws in Illinois. Honestly, I am starting to think this is another dieselgate (‘tainment gate?) and that ODIS is just not logging all the electrical/software errors anymore. I recently had wrong-way windows, stuck charger, failure to sense me in the seat, battery overheating… I caught a bunch of it on video and have timestamps, and they can’t find anything in the ODIS logs.

 

[potatohead]

We have something like 16 - 20 service visits since July of 2023 now … we reported the blackout screen before it was formally acknowledged in recall .. we are still getting infotainment resets while driving and a slew of other things. We asked VW to share the ODIS logs with us and were informed that they are confidential - never shared with clients. What a shady business.

I have a theory. After much observation… I think many of the issues are linked to a faulty processor in or associated with the infotainment system. And I think VW may be deliberately not logging them.

Two dealerships have sworn for ages now that they cannot find the error messages related to the problems we report - even the original 919A stuff. We have dozens of videos now, too. And it is a safety hazard that I need to keep trying to capture this stuff on video. Something is super fishy and I am so exhausted by this whole thing.

 

[potatohead]

If we just give up and throw our hands up.. we are out more than 20k (the car has lost so much value because of its well-earned reputation). I just don’t feel that is OK.

 

[potatohead]

Then again…

Let's hypothesize a crashing processor. Maybe it's crashing because the processor fails, maybe it's crashing 'cause the memory fails, doesn't really matter.

The processor just crashed. It can log that it crashed and it might be able to log the proximate cause of the crash if it's something obvious like a memory parity/uncorrectable ECC error or a memory protection violation, but that's nothing like the sort of data you're expecting (saying that some subsystem in the car failed). I suppose the processor could write out a full memory dump and someone/something somewhere could analyze it, but it's a car, not a stock exchange and no one's going to invest the time, effort, and money to do that for every computer failure.

I think I agree that all of your problems may point to bad computer hardware but if that's the case, please don't expect detailed logs of why, e.g., the seat occupancy detector stopped working.

This makes total sense, but we are being told there are zero errors that the dealership can acknowledge as ‘real‘ or actionable under the warranty. In some cases I know the exact date and time I’d want to check the log (in most cases, really - based on image and video metadata) - and still nothing. If VW is simply not logging the errors I care about, why not just be clear about it?

Also- why should their log systems be proprietary? My computers all let me look at the error logs from the bios to the most superficial programming - I feel like it should be my right to know what the logs look like - right?

 

[potatohead]

The first accessory I’d add to a BEV that uses a lead acid LVB, especially one experiencing anomalies, is a 12V battery monitor, and I’d pay a little extra for the BM300-Pro for its Bluetooth 5.3.

I personally would also carry a jump start pack large enough to be a Good Samaritan for most ICE vehicles like the NOCO GBX45 I carry today. Keep it where you can reach it in the passenger compartment because the tailgate might not open with a dead LVB. Know how to get into the car with the physical key.

I preemptively replace ICE batteries every five years. If I were leasing a BEV, I’d try to have it replaced free under warranty, ensuring the service department load tests it disconnected from the vehicle. If I owned it, I might do the same or if I felt it critical I might just replace it with an AGM or preemptively replace a less expensive battery every 2-3 years. YMMV.

Helpful tips! Thank you! Have always wondered how to be a good samaritan with my BEV, too !

 

[potatohead]

Thanks for sharing — this really illustrates for me how chatty these systems can be. I asked GPT to help me make sense of the content, and here’s the gist:

• Most of the codes are CAN Gateway chatter (modules briefly losing touch, often from small 12V voltage dips).
• The SOS/eCall module shows an ongoing, high-frequency fault — a known weak spot on the ID.4.
• The onboard supply control unit has some confirmed errors, usually tied to 12V stability.
• The high-voltage charger logged a confirmed hiccup, worth watching if charging issues crop up.
• The generic “engine” fault (P0798) is just a false translation artifact in EVs.
• The 1,048,574 km odometer entries are a diagnostic bug, not real mileage.

GPT emphasized not to read these as predictive of failure - you noted that everything is fine —and I know perfectly functioning systems can still throw this kind of noise. But the scan does highlight how sensitive the platform is to 12V health, and how often the eCall module shows up as a weak spot.

Does this square with what you were expecting or interpreting from the scan?

..
I work on software for a living- so I understand the need for chatty logging systems - they are ideal. I wonder how these would compare to other cars’ logging systems - are all logging systems this chatty with errors that actually do correspond to real weak spots in the vehicles’ designs?