Diesel Cayenne and VW emission issue
#6571
No, this was burned diesel exhaust smell. Not strong, but before this time, I could never small diesel exhaust. Wonder if the two have to do with DPF function or DEF dosing that the new flash adjusted?
I had previously written here that the new update allegedly did not include a re-write to the transmission control unit. I got this information from my sister's P dealer and from the guy on the Toureg forum who is putting the original factory shift coding back into post-fixed CD's. My sister had him flash back to the original factory TCU software over a year ago so that the CD would not hold the gears so long during warm up. She drives all 30 MPH roads to work and it's tedious to constantly manually up-shift. That worked out great.
But now it is gone after the new fix. It's back to staying in 3rd gear (instead of 5th) at 30 to 34 MPH during warmup. Worse, is that it appears to be holding this shift pattern until the CD is fully warmed up instead of partially warmed up as before.
So if you had your TCU de-updated, you will lose that with the new fix.
But now it is gone after the new fix. It's back to staying in 3rd gear (instead of 5th) at 30 to 34 MPH during warmup. Worse, is that it appears to be holding this shift pattern until the CD is fully warmed up instead of partially warmed up as before.
So if you had your TCU de-updated, you will lose that with the new fix.
Funny enough the only "warm up stumble" I ever experienced was, well, pretty consistently... leaving my neighborhood. Speed limit is 35 but it's otherwise a residential street, so I accelerate up to 35 gradually. Seems the trans wants me at 33 or 37 because if I "level off" at 34-35... the shift to 4th is pretty rough.
The latest fix did nothing for that scenario. #shrug.
Otherwise... so far, so good. Still enjoying the update.
The latest fix did nothing for that scenario. #shrug.
Otherwise... so far, so good. Still enjoying the update.
#6572
I'm getting the update on Monday. Interesting regarding the DPF burnoff smell. I've smelled it very faintly here and there but, not like the BMW diesels I've owned. There would be times I'd walk into the garage and it smell like a McDonalds in there from the burnoff.
Now that I'm thinking about it I have never been prompted to fill my DEF with the current software and I've only topped it off once in about 30K miles. That was probably 15-20K ago. It seems like my X535d would only go 6-8K between filling the DEF. It will be interesting to see if DEF usage changes with the update.
Now that I'm thinking about it I have never been prompted to fill my DEF with the current software and I've only topped it off once in about 30K miles. That was probably 15-20K ago. It seems like my X535d would only go 6-8K between filling the DEF. It will be interesting to see if DEF usage changes with the update.
#6573
I'm getting the update on Monday. Interesting regarding the DPF burnoff smell. I've smelled it very faintly here and there but, not like the BMW diesels I've owned. There would be times I'd walk into the garage and it smell like a McDonalds in there from the burnoff.
Now that I'm thinking about it I have never been prompted to fill my DEF with the current software and I've only topped it off once in about 30K miles. That was probably 15-20K ago. It seems like my X535d would only go 6-8K between filling the DEF. It will be interesting to see if DEF usage changes with the update.
Now that I'm thinking about it I have never been prompted to fill my DEF with the current software and I've only topped it off once in about 30K miles. That was probably 15-20K ago. It seems like my X535d would only go 6-8K between filling the DEF. It will be interesting to see if DEF usage changes with the update.
I've been curious about DEF usage on mine too - but I have the dealer do the 5k oil changes. They always add DEF then. I've tried telling them in the past "Don't add DEF, I want to track it myself" and in the end, they forget I asked and top it off anyways.
#6574
Do you change your own oil, or do you have the dealer do it?
I've been curious about DEF usage on mine too - but I have the dealer do the 5k oil changes. They always add DEF then. I've tried telling them in the past "Don't add DEF, I want to track it myself" and in the end, they forget I asked and top it off anyways.
I've been curious about DEF usage on mine too - but I have the dealer do the 5k oil changes. They always add DEF then. I've tried telling them in the past "Don't add DEF, I want to track it myself" and in the end, they forget I asked and top it off anyways.
#6575
I have a 14’ diesel and there seems to be like a fan like noise when I drive. The noise stops when’s I slow down to park. The car seems to drive fine (little bit more peppy). Has anyone else noticed this type of noise?
#6576
My sister's '14 CD sounds like a freagin' Dyson hover craft in the summer if the A/C is turned on. The fan is extraordinarily loud but gets slightly less loud when approaching a full stop. Never understood this. Dealer says "it's normal".
#6578
I got the most recent update done last Friday, and wow, they did a good job with it... Seems to be much improved in nearly all driving situations, and most noticeably it's smooooooth and quiet... Very happy with the update, and it's probably really close to what it was before the original "fix".
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Needsdecaf (03-15-2020)
#6580
Over the last two weeks I had the “fix” to repair the “fix” done on our ‘14 and ‘15 and both seem to run smoother and the transmission shifts more precise . Both run like new and the ‘14 has 104XXX miles on it and the ‘15 has over 70k both bought new and still under warranty. In fact they replaced the battery on the ‘15 last week under warranty. Been a good owning experience with Porsche stepping up and doubling our warranties and then sending us checks. Plan to keep them both for the foreseeable future ... comfortable, nimble, great mileage and power and tows well
#6581
Got mine done yesterday and I concur with previous posts. Runs much better, especially when warming up. No more stumbling. Question for this of you that have had your CD prior to the recall. Does this new flash differ much from pre-fixed cars?
#6582
It's been long enough since the original fix so it's difficult to say for sure, but I'd say it's really really close. I'm super happy with it.
#6583
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Needsdecaf (03-15-2020)
#6585
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From: The Woodlands, TX.
Dropped off the ‘14 CD on Friday 3/6 for the diesel campaigns, my overdue 80k (I’m at 86k miles now) mile service, and to look at the coolant leak issue. Coolant leak done, was $$. 80k mile service done and $$ but a lot done including brake flush and diesel filter.
But the diesel campaigns. Oh my.
As others have said, I believe the car is 90% plus back to pre-fix behavior. No cold start rattle. Cold upshifts don’t hang forever and feel more natural. Still later than when new. But the lag is almost completely gone. And behavior off the line is completely transformed. I remember back to when it was new when the car had so much torque off the line that you had to be ginger with the throttle. I forgot what that was like. It’s now back.
While underway, the car tips in smoother with no lugging and rattle. The car still has some diesel lag but no longer is there throttle / ECU hesitation. The car downshifts quickly when needed. I couldn’t help myself on the way home from the dealer but punch it in traffic on the highway. The CD we bought is back!
Driving home from the dealer, I was giddy. I had my wife drive it to dinner and she was ecstatic. It’s her daily and she loves the car but has been sad about the post-fix behavior. She is psyched to have her car back.
Kids had Spring Break last week and now will be home all next week. We got the hell out of Houston and headed to the Hill Country for some pie and wildflowers. Drove a 200 mile loop and used barely over a quarter tank! Notice the DTE is still almost 500 miles. This was a mix of hill country back roads and plus MPH highways.
Overall, I’m very, very happy with this campaign. Our EGR cooler was checked and found to not need replacement. Get yours done now if you have a “fixed” diesel.
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RS-America (03-25-2020)