Club Touareg Forum banner

DPF replacement - $4k!

14K views 28 replies 14 participants last post by  barefoot  
#1 ·
My '07 R5 (68,000kms) apparently needs a new DPF due to the current one "collapsing" - lots of exhaust emmissions and goes into limp mode occasionally.

VW dealer from where i bought the car has quoted NZ$4k to replace, incl labour. Where do I start - I assumed these would need maintenance at around 120,000kms and not require replacement, certainly within the current age of the vehicle.

Has this DPF been a dud and I have case with VW NZ to replace at no cost?
 
#2 ·
Hi, sorry to hear this. Since it is out of warranty you might not have a chance but worth trying.
Other option would be to remove the dpf altogether, run a search here n you will find relevant info on how to
 
#3 ·
G'day
Could be worse...if you had a V10 you'd need two! And the service manager would tell you they are a routine service replacement item at the 120,000km service!
I do believe you can cut them out but you'd need an expert to play with the electrics perhaps. It's in my future somewhere I'm sure.
Regards
Kevin
 
#4 ·
If it has collapsed--then there is nothing which can be done other than replacementor a DPF removal program ran into the ECU, if they are clogged they can be 'Pulse cleaned' using pulse air to shock the ash out of them. Look for a 2nd hand one--these cars must get written off like all others do.
 
#6 ·
ziggy some are fitted with a small bypass pipe and the sensors relocated, fooling the ecu everything is tickety boo, or replace the whole thing leaving the sensors at relevant locations...

are you running my old ecu chip on the R5? (maybe it was someone else)
 
#7 ·
removing the dpf will ofcourse allow the soot to shoot out freely and smoke up the vehicle behind you...guess only when you floor the pedal, and twice that in the v10 Kevin.
 
#9 ·
Ever been behind someone when their DPF regenerates? It's embarrassing when my V10 does it - tons of smoke everywhere and there's nothing you can do to stop it.

My diesel Sub had a passive DPF, which was basically a filter without the sensors or fuel injection. GM's suggested maintenance was to drive it hard and blow all of the ash out of it when performance began to drop off.

I hate the things.
 
#8 ·
Who cares about the car behind [unless you are IN the car behind!]?
 
#12 ·
I'm with that. Prime movers emit emissions, soot and grunge. Cut the DPF out and it's permanent. You'll feel a lot better when you think of other world regions that spew out emissions without a care. Carbon tax exempt too!:p
 
#16 ·
My old 2008 R5 2 months out of warranty did the same thing, I had said on a few previous visits to the dealers that the DPF was doing weired things so I had a document trail that something was wrong with the DPF, the dealer arranged a goodwill claim, a couple of weeks later the problem was back and they then replaced the turbo, 100% goodwill claim. So when needed VW do stand up to the mark and I am also very great full to my dealer for also looking after me - loan cars for the whole process.
 
#13 ·
G'day
Most modern prime movers and big trucks run DPFs and use adblue...and they pay about $1 per litre for adblue so what is it that is in VW additive that is worth soooo much more? But that is another topic. Emissions from the current crop of big diesels are very reduced was my point.
Regards
Kevin
 
#14 ·
Am lucky not to have it in my v10. Can control if want to double smoke the guy behind or keep it clean by easing off on the pedal.
I note its the first shove of the pedal that lets it all out n cleans the pipes, subsequent acts of heavy foot driving will be clean, until you start driving like miss daisy where it starts to build up in the pipes again
 
#15 ·
And my point is that this country is blindly led by the 'do-gooders' so that emissions are what they now are by way of regulation and they are something else in the rest of the world, as in it's not an issue, so they emit. So, DPF or not, it's no loss to correctly remove it/them, v's the $'s to have it/them functional. Bit blunt, but that's life with the larger world we live in. $4K is a lot of fuel in the tank. I'm happy to plant trees and sleep. Yep, look fwd to VW and more adblue in future models.
 
#18 ·
I'm amazed any of you get any visible stuff coming out of the exhaust at any time. I tend to drive fairly steadily mainly. I shift down to get engine braking as you would in a manual. I give it a bit of a hurry up regularly for short bursts. Never notice DPF regen except occasional small drop in grunt. Never seen anything in rear vision even at night with following lights. Exhaust tips don't even get that dirty. John
 
#20 ·
I'm amazed any of you get any visible stuff coming out of the exhaust at any time. I tend to drive fairly steadily mainly. I shift down to get engine braking as you would in a manual. I give it a bit of a hurry up regularly for short bursts. Never notice DPF regen except occasional small drop in grunt. Never seen anything in rear vision even at night with following lights. Exhaust tips don't even get that dirty. John
Me too, in 50K of travel I've never seen or felt a regen taking place.....makes me wonder if I even have a DPF????
Tony
 
#19 ·
Perhaps you have Adblue John?
 
#21 ·
Interesting thread, in particular that it's an R5 with a DPF, I wish I had DPF on mine because I'm rather embarassed at the soot that comes out when I've got my foot on the gas pedal. But each to their own.

Even more than interesting, I think it's a rather complicated situation because of the oil issue. Remember standard R5s are supposed to use 506.01, whereas DPFed TDIs are supposed to use 507. One has to wonder whether the dealer has used the correct oil, because incorrect oil can clog up the DPF. Remember the issue of cam lobe damage when 507 were used on R5s and V10s.

The other issue is, VW NZ (as far as I'm aware is a private importer, ie not a subsidiary of VW), so I wonder whether there's a bit more flexibility in terms of goodwill. Good luck to the OP!

Re' failure mode of DPFs, I've read VAG cars do fail due to sensors, eg a Px sensor fail loading up the DPF (throwing no fault code) and damaging the DPF. This may also assist in terms of rationale for goodwill.

And finally, re' why some people notice regen and some don't, IMO, depending on driving condition and style, you will find that cars that regularly passive regen may have less need to active regen, likewise, lots of doodling around town can also build up particulate faster than a car driving efficiently on the highway.
 
#22 ·
Are we only just now seeing the surface of potential future DPF problems? DPF's have only been in common use by VW Audi for about the last 5 years, passenger cars only normally do about 20,000km per year so those DPF cars are now reaching the 100,000km mark are they going to start having issues? I will be very grumpy if I have to drop $4,000 on a DPF issue.

My V6 TDI shows none (touch wood) of the same signs that my old R5 did – the R5 used to smoke a lot when you gave it some mumbo juice, in the V6 TDI I have never noticed any smoke night or day.

From what I have read in the past the V10 DPF's are further down stream than the R5 DPF therefore the V10 DPF’s need a "special" fluid to get the DPF to a regeneration temperature, this is different to the adblue that is injected into exhaust system.

Good point on the oil for R5 / V6 TDI – but how would you prove that at some stage VW put the wrong specification oil in? I am also very wary these days of any additional fuel additives, I used to put Lucas in the R5 every tank. I now only use it occasionally in the V6 TDI.
 
#24 ·
If the DPF over soots and/or a pressure sensor goes off (warning), there's a good chance you'll notice increased fuel use as the DFP attempts to regen either bank. If it fails (or warning), take it to the dealer for a vag-com regen. Happened with the Crafter a few months back....really sh!t fuel use for a week or so. It now runs the best it's ever run, and way better on fuel
 
#26 ·
I drove my dads old golf the other day, its about 10 yrs old now, the two litre diesel will not let out even a speck of soot under any circumstance, no matter how hard you drive it.
And of course it has no dpf or anything like that to curb emissions.
Now why couldnt they make the treg like that
 
#29 ·
I know it doesn't help that all the cars in our garage are diesel, but given the film of soot on everything, I tend to think if the air we berth is full of the stuff, hate to think what the rate of lung cancer will be.

On carbon tax, agree, someone will get rich by it, can't see the momentum slowing unless there's an election sooner rather than later.