Dashboard features: immobilizer and oil sensor? After TDI SE KI conversion

Hi!

After the Kombii.umbau to a G 4 SE TDI, the immobilizer warning light is constantly flashing! However, the vehicle is running! And after starting, it displays 'Oil sensor - workshop' and then the oil light flashes a few times, followed by a brief beep! What could this be? Is the coding incorrect? I urgently need help!

Best regards.
Sure, here is the translation of the text from German to English:

'Micha'

Hello, what year is your G4 from? Who installed and adjusted the AI system, and does the AI system even fit?
A few more details at the beginning would be desirable.
It's kind of like when you ask a customer what kind of car they have, and they reply 'a green one.'
(No offense intended)

Don't give up - but there are even better answers available...

'Yes, a large one' - an elderly lady said, referring to a 9N (likely a type of car).
'Hmmm, yeah, a VW/Audi/Opel' - You hear that often.
'Yes, I don't know, it's a car belonging to an acquaintance' - Young blonde woman.

Even better are questions about tires.
'Yes, I have 4 of them.' - Another one without a spare tire???
'Size? I don't know - Is that information in the documents?' Where??
'I don't know which brand' - Well, as long as it's round, black, and has a hole in the middle.
Please provide the German text you would like me to translate into English.

Apart from that, the WFS probably needs to be properly calibrated, and the oil level sensor can generally be deactivated.

And after starting, it shows me 'Oil sensor, workshop' , then the oil light flashes a few times and there's a short beep! What could that be? Is the coding incorrect? I urgently need help!


The car's onboard computer (Kombi) requires the oil level/temperature sensor because it uses that data to calculate the maintenance interval. I'm not aware of any coding that would disable this. Try to code the Kombi to use a fixed maintenance interval (search function - technical articles); perhaps then it will ignore the oil sensor.

CU Gremlin.

HI!

Yes, sorry!

Okay, so I have a Seat Leon TDI with 81 kW (AHF engine)! It was first registered in May 2000! I installed and adjusted everything myself! So, I was just working on the car again, and the oil sensor is now removed. Everything is working perfectly!
Only the immobilizer warning light is flashing continuously! But the car runs!

Best regards.
micha

If the light is blinking, what error code is stored in the system?
Please read from address (17 or possibly 25?).

Hi!

The key was incorrectly coded! But I managed to fix it! I just re-programmed it. Now, the oil sensor is still giving me problems! When I start the car, it says 'Oil sensor - workshop' but then it disappears after a few seconds. 'The error code indicates a short circuit to positive.'

Best regards.
Sure, here is the translation of the text from German to English:

'Micha'

Do you have an oil sensor on the oil pan? If so, try disconnecting the connector and see what error code you get.

So, this speedometer is designed for long-life operation, and even if you program it for fixed intervals, it will still use its sensor because it can then simply measure the oil level.

You essentially only have the option of installing a new oil pan including the sensor (~160€ plus labor) and connecting it to the control unit with the 3 cables. You cannot turn off the message, as Gremlin already correctly stated.

Or fake the sensor signal...

If the sensor is only used to measure the oil level at a fixed interval, then either two resistors (voltage divider / potentiometer as a measurement principle) or a connection to ground or positive (switch for correct oil level) would need to be used to simulate a correct oil level.

Unfortunately, I don't know the exact way the sensor works. Perhaps Gremlin, Mersente, or Julian might have something to say about that.

I wouldn't buy a complete oil pan at the prices Julian mentioned, not even for that car.

Regards,
Private.

Well, the oil pan isn't that bad.

According to statements from Gremlins, the sensor is 'self-aware' and outputs digital signals that cannot be easily faked with just a few resistors. I haven't yet encountered anyone who has successfully modified it without any drawbacks.

Perhaps the prices at Seat are a bit more reasonable; I'm assuming it's a Golf 4 with an AKL or ALH engine.

Hello, you might also be able to install the sensor in your oil pan, where it would normally be located. However, in that location, the pan is simply cast solid. You would need to drill two holes for the mounting (and tap them for threads) and a larger hole for the sensor itself.

Hmm, I wonder if that will seal properly. Does that sensor even exist without an oil pan? As far as I know, unfortunately not...

Sure, there's a version without an oil pan, as I've replaced it several times before.
It's probably sealed with silicone in the threads.

Does the 2000s Ibi already have a recess for it in the oil pan at the bottom?

'z-man' should definitely check that out; it's certainly possible.