BPP 2.7 TDI 6 Glow Plugs Defective?

Hello everyone,

I have been informed by VCDS that all 6 glow plugs are defective.
While I can theoretically imagine this with a mileage of 85,000 km, I still find it somewhat difficult to believe... Does anyone have any other ideas?
Installed are the Beru candles with a red sealing ring.
Car scan is in progress.

Thank you and have a wonderful, sunny weekend!

Would first measure the resistance before disassembly. Should be between 0.7-1.1 Ohms.

Measuring and also replacing is fortunately very quick and easy with this engine.

Hi,

and should all 6 of them be missing at the same time? Very unlikely.
Sounds more like a loose wire or a faulty fuse.

First, clear the fault codes and see if they reappear or if the cable was simply disconnected when the ignition was on.

Best regards, Rainer

I think so too. Before they are identified as defective, they haven't been glowing properly for a long time. That should have been noticeable in the winter.

Good evening,
Therefore, I cannot confirm that the exchange will be easy. They are completely blocked. Nundenn, I disconnected the cables on 2 candles for testing:
Findings:
1. Error deleted, but reappears after engine start. And specifically, for all 6 candles.
2. Diagnostic test for component 2 successful. Approximately 11% afterglow was detected. Measured in volts, the value was around 3V. (Whatever that means... I was previously assuming that there should be a battery voltage, i.e. 12V)
3. Resistance of both resistors: 500 Ohms and 560 kOhms. This means a tenfold difference. If the working candles have around 1 Ohm, then the two should already be in the trash.

Please provide the text you want me to translate. I will translate it accurately, keeping all s exactly as they are, and then I will be ready for your feedback.
Thank you!

...I just found out that the candles can only be operated with 4.4 volts.
One never learns enough...

Hufe wrote:

Therefore, I cannot confirm that the exchange will be simple. These are completely out of the question.

For me, this is simply not feasible, but I am also familiar with the extreme cases (e.g., Mercedes-Benz B-Class, 8 hours specified, 12 hours actual, because there is a guaranteed minimum of 2 out of 4 components failing).

Hello,

In this car model, it's also a good idea to occasionally check the electrical box next to the battery.
This can also cause water to enter, which can then damage the control unit for the heating system. This is located at the bottom of the box.
The fuse for the light bulbs is also installed there. On my B7, a contact on the fuse was corroded.
This doesn't fit with the errors that have been discarded. The error code will then be different.

Hello, Oliver.

The light bulbs are not installed. That might look worse than it actually is.
All tools can be purchased at the hardware store, and uninvolved components do not need to be dismantled.

Whether 11% is a good value, I don't know, but definitely, the candles are operated with timing and not with a constant 12V.

Quote:

It's also a good idea to occasionally check the electrical box next to the battery on this car model. This can also cause water to enter, which can then damage the control unit for the heating system. This is located at the bottom of the box. The fuse for the light bulbs is also installed there. On my B7, a contact on the fuse was corroded.

I had a case with a 4F BPP where the glow device malfunctioned, and then there was a permanent 12V supply to the glow tubes, which caused them to melt.
In a (Cylinder 5), the pin has broken and fallen into the cylinder -> Engine damage

"Gentlemen,"

Here is the solution to the riddle:

I have replaced 4 candles. Specifically, the 4 I could achieve without adding any significant parts. (1, 2, 4, 5)
Currently, only 2 candles are still being recognized as defective. Interestingly, candle 2, which is still being reported as defective, is actually brand new. The report regarding Cylinder 6 is accurate.
Actually, it should read: Cylinders 3 and 6 still defective.
Does VCDS count the cylinders differently in any way?

Regardless, there are now 4 functioning light bulbs. This means winter can come. ...should be sufficient for starting.

Quote:

Does VCDS count the cylinders differently somehow?

You can easily check this by disconnecting an injector (when the engine is stationary!), and then checking the fault memory to see which one is being reported there

Warning: During a vehicle inspection, the error memory is read out. Faulty light bulbs are recorded as entries and are relevant to emissions, which can lead to a failed inspection and also a failure of the HU (German vehicle inspection).

Hufe wrote:

I have replaced 4 candles. Specifically, the 4 I could achieve without adding any significant parts. (1, 2, 4, 5)

That's not true. You can easily reach all 6 of them. Personal experience.
Even though you can't stand me anymore: I haven't read anything this stupid in a long time.

@ Hufe

Ensure that all 6 are fully functional, as the afterburners are crucial for these engines, especially regarding the
Emissions levels during the warm-up phase. Both cylinders that do not misfire,
This results in more soot, which puts a greater strain on the particulate filter and also clogs the intake channels through the AGR.

Just type something into the YouTube search bar.

-> Replacing light bulbs Audi A6 / V6 TDI (VW Skoda Seat)

This video shows exactly how to change the oil in your 2.7TDI.

Cylinder 3 is not an issue, and at Cylinder 6, the throttle valve motor is located at the
Flat-head, to allow access with the key (1/4" ratchet with swivel).
You can also loosen the 3 fixing screws (T25) of the control motor even when the ignition is off.
take this route and get there better.

Greetings, Mpire

Hello Mpire,

due to your explanation, I have also replaced the two furthest back light bulbs:
Conclusion: All errors have been eliminated.
Thank you for your/your motivation!
Now the winter can come....

Thank you for your feedback!