Tankanzeige hängt nach - A4 Cabrio 2.5TDI (BDG) | Posts 48+

25-05-2016, 11:52 Subject:

Hello Steffen,

Thank you for the information!

Currently, it appears that the AI is now consistently displaying the correct information after being turned on and off. But I will continue to observe and report, I need to fill the tank completely and then let it run empty first.

25-05-2016, 12:08 Subject:

Steffen W wrote:

What I noticed: The MWB tank level sensor reading is 136.

Florian320 wrote:

Does anyone know if this could have an impact, or if the value is 'normal'? The energy display is very accurate and has never needed to be adjusted.

This is the value in the APK 30 for front-wheel drive models. (Quattro models have 2 channels: 29 and 30)
And it's not the average value. This is 128.

I have also adjusted the APK for the fuel gauge / remaining range setting. I once deliberately drove my car with a remaining range of 0 km and was still able to travel 85 km. Therefore, I adjusted the display by 3 liters higher (which was the maximum in my KI). Since then, the remaining range has been behaving strangely. If I start driving with a remaining range of 200 km with the same driving style as the previous 1,000 km, then after about 100 km, there are still about 100 km left on the remaining range display. However, after that, the remaining range decreases disproportionately. D.h. after another approximately 50km, the RR will be at 0km.

Long story short: A change in the APK resulted in a strange behavior of the remaining fuel reading for me. Since you have made a change in this APK and are observing a strange behavior of the fuel gauge, I think there is at least a possibility of a connection. So, if it happens again, I would first set the APK to org.

Greetings
Guste

25-05-2016, 16:30 Subject:

Yep, that's a good idea.
But at the moment, it appears that the display is now functioning normally.
I will report...

29-05-2016, 13:06 Subject:

The joy was only fleeting.
The display is now behaving as described: Ignition on - display too high, running slowly towards the target value.
The value of the tank gauge is according to {SOURCE}. MWB consistently.

So ist die Wahl wohl entweder jemanden finden, der die KI wirklich reparieren kann, oder der Austausch, richtig?

29-05-2016, 22:27 Subject:

guste100 wrote:

In summary, if it happens again, I would first revert the APK to the original version.

Greetings
Guste

07-06-2016, 17:29 Subject:

Hello Guste,

I have done that. My car obviously has a sense of humor: now things are different.
Aside from the fact that with approximately 18L remaining in the tank, the remaining range is now zero, the phenomenon is the same, but reversed.

I just filled up the tank completely. At the start, the needle rose to 3/4 and then slowly and steadily climbed higher, eventually reaching the full mark after about ten minutes.

Now I'm just a bit lost.

08-06-2016, 9:48 Subject:

I believe that changes to the APK may cause some values (e.g., remaining range) to no longer match temporarily. I would like to recalibrate the upper and lower limit values once (i.e., fully fill and then almost empty).

While it's only a faint hope, I can't offer anything more.

Greetings
Guste

08-06-2016, 19:23 Subject:

Hello Guste, thanks, I'll give it a try.

This slow "startup" to maximum was interestingly only noticeable on the first start after a full tank - since then the display always goes all the way up.

I will report.

12-08-2016, 9:27 Subject:

A brief update: since I haven't been driving much lately, I can't yet definitively say whether changing the value was the final solution. I've just finished filling up with gas, and the second one is currently in progress.

But the trend is clearly moving in that direction. The fuel gauge seems to be a bit more sensitive, especially regarding the vehicle's tilt during startup (parking assist). It seems like the outbreaks are bigger than before.
But if the car is currently parked, the display seems to be accurate - as I said, I would like to check the second tank fill-up.

Since I have no idea how AI internally processes things: could the frequent use of double parking 'deceive' the evaluation electronics over time, and is that the reason why this phenomenon occurs / occurred?

dieselschrauber · 24-11-2016, 18:58 Subject:

Okay, here's another update:
Gust had been right: the change of the aforementioned value has normalized the behavior.
While the AI now clearly indicates very little (the reserve level drops when there are approximately 20L remaining in the tank), the described malfunctioning of the AI indicator has now been eliminated.