Orange Engine Warning Light

[Umai Naa!!]

What 10 days off the road in 5 months on a car worth $50,000 plus the hassle of getting it in and out of the dealership midweek when one has a full time job and some wally in the service dept telling me that it will be another 3 weeks to book my car in for an on going warranty job and you tell me it doesn't warrant snide remarks and to get on with life.

Now, go away and don't say any more before others realise the same thing that I already know you are.

I'm a VW technician. Most people on here have already worked that out.

And no, I'm not going to get into an arguement with you.

[Transporter]

Exhaust pressure sensor (G450) location;


Detail image, incl. p/n

Made in Malaysia.

[Greg Roles]

This is my understanding and correct me if I am wrong, please.

This sensor and pressure switch, screw into a chamber into the exhaust after the turbo dump pipe or there abouts and the chamber collects carbon until the sensor or pressure switch detects there is enough carbon to run the exhaust temperature hotter to burn this carbon off.

So in this chamber that collects this carbon the must be some type of filter to retain the carbon, so what would happen and if it was possible to knok the guts out of this chamber so as to remove the filter material, except for the illegal side of thing of course.

Problem solved or not?

Absolutely not I'm afraid. Removing a DPF or guts thereof is an immense task, and so far only one company has a solution due to the complex computer tune required ( Custom Code ). Knock a hole through the DPF and it's into limp mode till you replace it, and I believe VW australia's price is north of $4000 for a new DPF. Look after the one you have! Get a Provent! Only run 507 low ash oils!!!

If pressure sensors are that cheap, I won't bother returning for warranty, it's not worth my time and hassle.

[58bernie]

Thanks Greg, that ruled that thought out before it turned costly.

Highway VW service dept did ring home yesterday afternoon and left a message inquiring if everything was still OK from Tuesdays repairs.
Now that is customer service and a big thumbs up.

[graeme86]

Just driving around town all the time can cause this light to come on due to the design of the DPF.

It needs a good run occasionally to burn off the particulates.

Not sure if this is actually mentioned in handbook.

There is more information in this link as to how it all operates:

http://www.myturbodiesel.com/1000q/vw-jetta-tdi-golf-dpf-filter.htm


There is a procedure that can be done with the workshop diagnostics to burn these off, but things can get a bit hot.

[Transporter]

We've done 46,000km in our Touareg with DPF with mostly city driving and for past 18 month mainly short trips and so far no problems with the DPF or light coming ON. I always used only BP fuel with the fuel additive. I expect the same reliability from our Tiguan.

It would be good if people with DPF issue could always mention what brand of diesel they use and if they use it regularly. It may have a lot to do with it.

Otherwise the cost of that pressure sensor (G450) is $70.00 , so I definitely put a spare one in the box with spare globes in the car.

[VWTechOP]

this issue with the differential pressure sensor for the DPF if not fixed can lead to the DPF becomeing blocked and in extreame cases in need of replacement so its worth while to get it looked at sooner rather than later

[CanAm]

Yeah, I know...

Snide remarks? You ain't seen nothing yet! - Replacement parts were ordered today , they'll let me know when to book in for fitment.

UPDATE: Parts were fitted . This consisted of the exhaust after the T/C right up to the 1st silencer , probe/sensor , etc (ZAR35k worth of spares).

Remember, this was done after the experts at VWSA analized the data collected from my car on the 3 previous occasions...

You guessed it! 42km later the light was on again.

I printed this thread and begged/threatened/whatevered them to please change the pressure switch.

It was eventually done and guess what? 500km later an NO engine light.....................!

I don't know who I have the least confidence in at VW nowadays, the "engineers" at the factory, or the "parts-swappers" in the dealer workshop!

[clip]

I printed this thread and begged/threatened/whatevered them to please change the pressure switch.

It was eventually done and guess what? 500km later an NO engine light.....................!I don't know who I have the least confidence in at VW nowadays, the "engineers" at the factory, or the "parts-swappers" in the dealer workshop!

Great news, and I agree absolutely with dealer arrogance. And the dealers wonder why people seek out other alternatatives?!

It is worse with bikes though. Owning mainly Euro bikes over the years, it amazes every time there is a recognised 'issue' that comes up on one of them that the dealer experts are totally ignorant of. And then I have the battle about what's actually wrong. I know there is a lot of misinformation out there too, but in my experience that's easy to spot, and if I can spot it then I'm sure a trained technician could. If I were any of these workshop managers, I would set aside 30min each day for my technicians to spend on the forums. This is where the real experts are IMHO!

[58bernie]

We I am pleased to report that the warning light is still off, Great job by Highway VW Springwood. Have received 2 follow up phone calls to ckeck if all is still ok.
Now that is customer service is all about.