Audi A4 8E Kombi Instrument 2.5 TDI AKE

Hi,
Problem: The Audi starts after about 10 seconds, but the oil pressure warning light comes on, even though there is oil pressure. The oil pressure sensor is working correctly, and the measurement module also indicates that everything is okay.
Furthermore, not all warning lights illuminate when the ignition is turned on, for example, the glow plug indicator. The next problem is that the tachometer shows nothing.

Okay, here's the translation:

"Now my question! Is it the starter motor or another electrical problem? I'd like to be sure before I buy a new one. I haven't done anything yet to try and find the fault."

Do you have any tips or suggestions? I've already read a bit online, and sometimes it mentions things about defective microcontrollers.

Okay, so I checked the actuator diagnostics today. Everything is okay, all indicators are working, etc.

Fault memory: 00576 - Terminal 15.
27-00 - implausible signal.

"You can clear the error, but after running the actuator diagnosis again, the error reappears?"
According to the circuit diagram, a voltage regulator is located before the operational amplifier in the power supply circuit.

What do you say? Is the KI defective or what?

Hello, I've seen similar problems with my A6 and various other VAG models. In my case, it was a cold solder joint. Before buying a new one, you could check the solder points on the connector and possibly resolder them.
Take a look at tachopix.de; you might find a cheaper repair option.

hmm, it shouldn't cost anything . Add that again.

Address 17: Control panel module
Label file: DRV\8E0-920-9xx-8E2.lbl
Control unit part number: 8E0 920 930 J.
Component and/or version: KOMBI+TRAILER. RB4 D27
Encoding: 01148
Company number: WSC 00000
Extended information: WAUZZZ8E22A201068 AUZ6Z0A0347887
"One error found:"

00576 - Terminal 15.
27-00 - implausible signal.

Encoding ??? According to openobd.org, this doesn't work at all.

Control unit coding (only for models 8E2/8E5).

Select STG 17 (combination instrument).
ECU coding -> Function 07.

??xx1: Optional extras / Additional features.

+00 - 1. Distance metric (Europe, USA, Rest of the World).
+01 - Smaller fuel tank (Quattro).
+02 - Seat belt warning active (NAR, older version - up to week 45/2004).
+04 - 3. Distance-based indicator (rental vehicles)
+08 - 2. Distance-based indicator (Australia)

xx?x1: Country selection.

0 - Germany (D)
1 - Rest of the World (RoW)
2 - USA (US)
3 - Canada (CDN)
4 - United Kingdom (UK)
5 - Japan (JP)
6 - Saudi Arabia (SA)
7 - Australia (AUS)

xxx?1: Seatbelt warning.

0 - No seatbelt warning (or NAR old).
3 - Seatbelt Warning (NAR, new - from week 45/2004).

Hi, I'm having the same problem! How did you solve it?

Hi,

I tried resoldering everything, but without success. I then sent it to Tachopix, but they refused to offer a warranty because I had already opened it myself.