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Has anyone run across this before? My fuel pump module keeps frying out shortly after installing a new one. This all began shortly after a stereo installer changed out the front door and dash speakers. I took it to a stereo shop and they could not find anything wrong. Similarly, my mechanic...

Possibly motor mounts?

Only once since I have owned by 2014 Q5 did the DPF warning symbol light up. I took it for a vigorous drive on the freeway at night (I drove it like a raped ape) to force a regen and all has been good so far and that was about 6 months ago.

Just for clarity's sake, some of you are passing the new, stricter emissions testing which is supposed to flag aftermarket tuning without flashing back to OEM software first? And does this apply to all years or only pre-2005?

I am interested too. I just received the dreaded smog notice.

I have now cycled through two full tanks of 76 RD; I must say it does start up quicker and runs slightly smoother and quieter. I do not notice much of any loss of power or mpgs. Seems like a good replacement so far.

I cannot help you with specific wheels or tires but the Tirerack website is a great place to start. You just plug in your vehicle info and they list many different aftermarket wheels with verified fitment. My favorite feature is they allow you to sort the wheels by weight, from lightest to...

Damn you...$4.29 at 76 in L.A. and that's cheap compared to many other local stations :(

All the local 76 stations just switched all their diesel tanks to "R99 Biomass Diesel" which I believe is 76's version of HPR. I filled up with it for the first time the other day and maybe it's just my imagination but it does seem to run slighty smoother. Power and mpgs seem within normal range...

Yes, but no longer due to mechanical reasons, just CARB. Beginning July of this year, they now test for a non-factory ECU tune as part of "passing". I cannot use a factory tune at all on the 2260VZK. So that means I have a ported and polished one stored in my garage for now. Any takers? I'm...

There were two rounds of emissions "fixes". The first one was so long ago now I don't recall the exact details but I believe they only replaced the DPF and a glow plug. The second round was much more involved. I still have the printout; here is the summary: "Performed campaign 23Z8, install...

Glad to hear everything is okay now. Oddly enough, my DPF light came on for the first time ever about two weeks ago. I gave it a thrashing on the local freeway and all is well now. I'm at 65k miles and this never happened before.

Did you not already have the upgraded DPF installed through the emissions warranty program?

I bought the DTUK TCU flash from Europe. Not as good as a custom TCU tune but much better than factory and is especially noticeable in Sport/Dynamic. I believe it's just more performance-oriented OEM settings from another more high-performance model with the 3.0 TDI.

The only "downside" is on the newer NA model TDI's, the HPFP is located below/behind the turbo making installation of the metering valve a pain. With that said, the additional low-end torque is definitely noticeable, similar to taking it from stock to stage 1 tuning. I may have lost 1 or 2 mpgs...

Cleared the codes a few days ago and they have not come back. The engine seems to be running well so I will start data logging.

I've read different opinions on biodiesel and how they ruin the HPFP. I recently had a scare with mine so I'm sensitive to this potential issue.

I still have two soft codes persisting: 1. C100C13 - Electro-mechanical parking brake button Open circuit Intermittent 2. C101414 - Function lamp in operating unit Open circuit/short circuit to ground Intermittent

It controls the fuel pump on TDIs. The HPFP will not operate without it functioning. Did you want to add anything of value to this thread?

This is what needed to be replaced: Fuel Pump Driver Module Part Number: 4G0906093J