Polo 9N - Correcting Service Interval Settings

Hello!

My parents have a 9N 1.9 TDI 74kw (AXR), manufactured in 2003. The problem: The settings for the service interval display are now completely messed up. The initial issue was that a local garage, during an oil change, had changed the interval from "flexible" to "fixed". After the time for the next oil change had arrived, I tried to revert the changes using VAG-COM / VCDS. I've been working on it more or less.

Today, I performed another oil change (after approximately 20,000 km). Afterwards, I wanted to reset the service interval indicator using VCDS. There is a function called "Service Reminder Intervall Reset" or simply "SRI Reset" in the main menu for this purpose. However, after the program connected to the control unit, the message appeared that my G-code with part number [...] is not supported and it stopped working. Consequently, I will need to manually reset each entry in the STG using adaptation.

Therefore, I urgently need your help. I would be extremely happy if someone could go through all the channels one by one so that everything can finally be correct: A) Extending the maintenance interval/Long Life Oil and B) Resetting after premature oil change.

I would really appreciate it if someone could take a look and see what the channels for the StG should look like.

If it helps, I'm posting a summary of the incorrect settings as they are currently stored in my StG. [size=85](The information is from OpenOBD.org)[/size]

Quote:

-> Channel 39 (TOG sensor) (only with WIV) Deactivation of the Temperature and Oil Level Sensor (TOG) 0 - disabled 1 - Activated IS = 1 (correct???) -> Channel 40 (Distance from Service) (from FY 2000) This value indicates the distance traveled since the last service in 100km. Change from 192 to 0 during oil change -> Channel 41 (Service time) This value indicates the number of days since the last service. The oil change was modified from 444 to 0 -> Channel 42 (Min. Distance to Oil) This value indicates the minimum distance to the next oil change in 1000km. 00015 - no Longlife Is = 150 (Correct?) Or should Value = 15 be?!) -> Channel 43 (Max. Distance to Oil) This value indicates the maximum distance to the next oil change in 1000km. 015 - no Longlife 300 - Gasoline Engines (Long Life) 500 - Diesel Engines (Long Life) Is = 500 -> Channel 44 (Max. Time to Service) This value indicates the maximum time until the next service in days. 00365 - No Long Life (12 months) 00730 - Long Life Service (24 months) Is = 730 -> Channel 45 (Oil Quality) 1 - Fixed maintenance interval 2 - Flexible maintenance interval Is = 2 -> Channel 47 (Coal deposit) (only diesel) The specified value represents a benchmark value for service requests. The displayed value is a calculated value for the soot content in the engine oil, based on a distance of 100 km. Is = 286 Question: Do I need to set the value after the oil change to 0? Or is "286" a kind of "multiplier" that you can't reset? -> Channel 48 (thermal stress) (only diesel) The specified value represents a benchmark value for service requests. The displayed value is a calculated value for the thermal load on the engine oil, based on a distance of 100 km. Is = 150 Same question: Reset to "0" after oil change or leave it as is? -> Channel 49 (minimal time interval) The time is specified in days. 365 - Fixed maintenance interval (12 months) 730 - Flexible maintenance interval (24 months) Is = 365

You are my last hope. I have, of course, already tried searching online, but unfortunately, I haven't found anything regarding "9N". Maybe someone here owns a 9N and can post their Polo's details here. *hope*
Best regards
Frank

[Translating...]

Welche VCDS Version benutzt Du denn? Der 9N sollte schon per Assistent gehen.

Viele Grüsse, Rainer

[Translating...]

Guten Abend!

Unmittelbar vorher habe ich 907.3 installiert. Das müsste ja IMHO die neuste Version sein.

Viele Grüße
Frank

[Translating...]

Hallo Michael!

Vielen Dank für Deine Antwort. Ich war gerade nochmal am Auto und habe den Rußeintrag und die thermische Belastung auf 0 gesetzt. Danach habe ich mir nochmal mal die Kanäle 42 und 43 aufgerufen:

Kanal 42 = Min. Wegstrecke bis Öl
Kanal 43 = Max. Wegstrecke bis Öl

Also irgendwas stimmt da nicht. Laut OpenOBD.org muss man jeweils den eingespeicherten Wert x 1.000 nehmen. VCDS sieht das aber anders: Da wird mir oben als "Kanalbeschreibung" (oder wie sich das offiziell nennen mag) der Text eingeblendet:

(Kanal 42) Min. Value Oil in 100 km
(Kanal 43) Max. Value Oil in 100 km

Wenn ich also VCDS vertraue, dann müsste Kanal 42 (min. Weg.) 150 und Kanal 43 (max. Weg.) 500 lauten. Ich persönliche glaube mittlerweile sogar tatsächlich, dass der Faktor 100 von VCDS korrekt ist und sich da bei OpenOBD ein Tippfehler konsequent durchzieht. Dafür würde auch sprechen, dass in der Beschreibung von OpenOBD steht: Wenn Kanal 42 = 15 ist das LongLife deaktiviert. Wie gesagt - laut VCDS müsste "150" stehen.
Und bei Kanal 43 würde der Wert 500 ja genau hinkommen (500 x 100 = 50.000).

Versteht man, was ich meine?!

Und dann hab ich nochmal eine Frage: So, wie Du jetzt die Zahlen korriegiert hast, haben Kanal 44 = Max. Zeit bis Service und
Kanal 49 = Min. Zeit bis Service
den gleichen Wert = 730.
Ist das nicht widersprüchlich? Also logisch betrachtet würde das doch bedeuten, dass die Serviceanzeige immer exakt nach 730 Tagen aufleuchtet?! Was daran ist dann noch "flexibel"?!

Viele Grüße
Frank

[Translating...]

normalerweise sieht es im konzern so aus:

-> Kanal 42 (Min. Fahrleistung)
Minwert km-Fahrleistung in 1000km-Schritten.

-> Kanal 43 (Max. Fahrleistung)
Maxwert km-Fahrleistung in 1000km-Schritten.

-> Kanal 44 (Max. Zeit)
Maximales Zeitintervall in Tagen.

*edit* 73 für 730 Tage

-> Kanal 45 (Ölqualität)

wobei ich mir aber bei den tagen nicht so 100% sicher bin... war zumindest bei den älteren modellen so.

eigentlich müssten sich die kanale auch selbst "einstellen", wenn du die ölqualität auf longlife
einstellst und dann den service zurücksetzt... (kanal 2 auf "0")
dann müsstest du ja die richtigen werte sehen

TDI-GTI-4-Motion wrote:

-> Channel 49 (minimal time interval) The time is specified in days. 365 - Fixed maintenance interval (12 months) 730 - Flexible maintenance interval (24 months) Is = 365 Incorrect, 730 is Correct.

Are you sure that the information on OpenOBD and in the VCDS label file is correct?
Longlifeinterval bedeutet ja beim Polo 9N TDI 15000-50000km und 1 bis 2 Jahre.
If you input 730 as both the minimum and maximum time interval, will the AI still assume a fixed 2-year period and only calculate the kilometers variably?

spiderschwein wrote:

Are you sure that the information on OpenOBD and in the VCDS label file is correct?

I'm assuming, but I didn't write this in the label file.
Your thought process is already correct, but not fully thought through. What do you do if you have a driver who manages to run 50,000 km in 8 months? Do you understand what I mean by that?

TDI-GTI-4-Motion wrote:

Are you sure that the information on OpenOBD and in the VCDS label file is correct? spiderschwein wrote: What do you do when you have a driver who is running 50,000 kilometers in 8 months?

In this case, one would have to go to the service after 8 months, as the 50,000 km had already been reached.
Once I have a VCDS system, I'll check the original coding and report back.