DPF issues, car going into limp mode.

DPF issues, car going into limp mode.

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Discussion

eybic

9,212 posts

173 months

Tuesday 15th August 2017
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moonigan said:
88racing said:
Wouldn't call that a short journey. My commute is only 11 miles - that's short but even then, the Boxster has reached operating temperature in that time. To say that a car isn't suitable for 20-50 mile daily drives would be grounds for rejection as unfit for purpose, I'd say.
Its 20-50 miles spread over 6-9 trips. She's a mobile Hairdresser.
There's your problem, definitely not diesel/ DPF territory.

I used to sell MINI's and sooooo many people just want a diesel, when asked why, their response was that it was cheaper. We used to suggest that unless you are doing 15k miles a year, it wasn't diesel territory.

Were you one of those customers that insists you want a diesel or did you go in knowing just what model and got led to an engine? If the former then you have yourself to blame IMHO, DPF issues have been well known for at least 5 years now.

Edited by eybic on Tuesday 15th August 13:33

88racing

1,748 posts

155 months

Tuesday 15th August 2017
quotequote all
She needs an electric car! Get her one of the little BMWs. You

anonymous-user

53 months

Tuesday 15th August 2017
quotequote all
eybic said:
Were you one of those customers that insists you want a diesel or did you go in knowing just what model and got led to an engine? If the former then you have yourself to blame IMHO, DPF issues have been well known for at least 5 years now.
Well OP did say:

moonigan said:
..ultimatley what swung it was the convenience of not having to fill up twice a week.

moonigan

Original Poster:

2,127 posts

240 months

Tuesday 15th August 2017
quotequote all
eybic said:
Were you one of those customers that insists you want a diesel or did you go in knowing just what model and got led to an engine? If the former then you have yourself to blame IMHO, DPF issues have been well known for at least 5 years now.

Edited by eybic on Tuesday 15th August 13:33
Knew the car I wanted but was on the fence regarding engine, hence the upsell to GTS would have been an easy one. Regarding DPF issues in the last 5 years my wife has had an Evoque Diesel and an E-Class Diesel neither of which went anywhere near the dealers yet they were both driven the same as the Macan. Until very recently there had been very few reports of DPF issues with the Macan but they appear to have almost exploded in the last 6-8 months. Spoke to OPC this morning and they have had lots of customers in with the same problem on late model cars so there is some suggestion that there has been a tweak/update that is making the problem more prevalent. This is been raised with Porsche and the sales team are now actively discouraging customers with driving profiles like my wife from buying a diesel.

smudger911

494 posts

257 months

Tuesday 15th August 2017
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Lots of short trips are not ideal - petrol and especially diesel with DPF. As a side note, some manufacturers require a certain amount of fuel to be present in the car for a re-gen to start. With recent BMW 3-series this was 1/4 of a tank as a minimum.

I wonder if the ECU software update Porsche are pushing out for the emissions "scandal" are having any effect on the number of issues being seen...................

Emeye

9,773 posts

222 months

Tuesday 15th August 2017
quotequote all
With all the modern tech in cars, I find it unbelievable that these manufacturers cannot design a car that can be used as a car, especially Porsche

To be told that you are not doing the correct type of driving is no on - especially when you have paid £50k for a car. The argument that you have bought the wrong engine should not be allowed to be used as an excuse my the maker.

I read a story about a woman with a Honda SUV being charges thousands to have the DPF fixed/replaced even though the car was under warranty, and being told she was not doing enough mileage.

IMO it is a design fault, not a use fault - the engine has not been designed to do the job it should be able to do.

smudger911

494 posts

257 months

Tuesday 15th August 2017
quotequote all
Emeye said:
With all the modern tech in cars, I find it unbelievable that these manufacturers cannot design a car that can be used as a car, especially Porsche

To be told that you are not doing the correct type of driving is no on - especially when you have paid £50k for a car. The argument that you have bought the wrong engine should not be allowed to be used as an excuse my the maker.

I read a story about a woman with a Honda SUV being charges thousands to have the DPF fixed/replaced even though the car was under warranty, and being told she was not doing enough mileage.

IMO it is a design fault, not a use fault - the engine has not been designed to do the job it should be able to do.
Agreed. Although I would put some blame at the door of the Governments who endlessly pushed diesel as cheaper / cleaner. Now the opposite is true! My local Land Rover dealer is already advising, and offering lower trade-in values for diesels as "no one wants them". Sharp practise on their part.

Slippydiff

14,742 posts

222 months

Tuesday 15th August 2017
quotequote all
Emeye said:
With all the modern tech in cars, I find it unbelievable that these manufacturers cannot design a car that can be used as a car, especially Porsche

To be told that you are not doing the correct type of driving is no on - especially when you have paid £50k for a car. The argument that you have bought the wrong engine should not be allowed to be used as an excuse my the maker.

I read a story about a woman with a Honda SUV being charges thousands to have the DPF fixed/replaced even though the car was under warranty, and being told she was not doing enough mileage.

IMO it is a design fault, not a use fault - the engine has not been designed to do the job it should be able to do.
The compression ignition engine is a wonderful piece of engineering, but clean it is not.
It runs at low temperatures, which is one of the reasons it's so durable and will run for hundreds of thousands of miles in boats, ships, HGV's etc.
But that low exhaust gas temperature also means cleaning the particulates from its emissions is difficult.
The tighter the Europrats make the emissions laws, the more "trickery" Diesel engine manufacturers are having to resort to to pass them.
The basic compression ignition engine concept is brilliant and simple, but adding complexity in the form of emissions gear is the root cause of the problems being discussed in this thread.

As for whether the tweaks made to VAG vehicles in light of the VW Dieselgate scandal are causing the current surge in DPF problems, I would think it highly likely.





anonymous-user

53 months

Tuesday 15th August 2017
quotequote all
gottans said:
Could it be crap fuel? Is it fed on supermarket fuel, might be worth changing fuel brand to see if this impacts the issue.

Also is the mpg okay.
I have considered this and I'll certainly try using Shell. MPG is what I would expect for the type of driving. Late 20s.

Late 20's for the mpg, porsche quote 45mpg for the urban cycle so this thing is using a lot of fuel, not surprised the dpf is getting choked to death.

Emeye

9,773 posts

222 months

Wednesday 16th August 2017
quotequote all
Slippydiff said:
The compression ignition engine is a wonderful piece of engineering, but clean it is not.
It runs at low temperatures, which is one of the reasons it's so durable and will run for hundreds of thousands of miles in boats, ships, HGV's etc.
But that low exhaust gas temperature also means cleaning the particulates from its emissions is difficult.
The tighter the Europrats make the emissions laws, the more "trickery" Diesel engine manufacturers are having to resort to to pass them.
The basic compression ignition engine concept is brilliant and simple, but adding complexity in the form of emissions gear is the root cause of the problems being discussed in this thread.

As for whether the tweaks made to VAG vehicles in light of the VW Dieselgate scandal are causing the current surge in DPF problems, I would think it highly likely.
There are lots of tales of woe about VAG cars going into limp mode and DPF failures etc soon after, if you do a bit of Googling. The dealers/manufacturer appear to always deny that it has anything to do with the fix - just a coincidence then eh?

My Passat Alltrack is one of the first cars to come after the dieselgate scandal broke, and it drives like crap and seems to be regening when parked quite often - I do short journeys mainly with the odd long one thrown in, but the DPF is still ok. At £130 a month there was no way I was leasing the petrol .version

grumpynuts

955 posts

159 months

Thursday 17th August 2017
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Sorry OP, you bought the wrong car. No salesman is ever going to tell you that his offerings are crap, but they should be more honest, I agree. The more modern the diesel engine is, the more complex they have become, and it's not necessarily good. I suggest you may continue to have the same problems on going, so trade it tn for a Toyota CH-R hybrid, or a Lexus NX hybrid. Both cars are perfectly suited to the role your wife needs a car for with similar styling etc. The CH-R hybrids are turning in 60+mpg and if you go for the top spec, are really nice cars and well equipped.

Mr2Mike

20,143 posts

254 months

Thursday 17th August 2017
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moonigan said:
Its 20-50 miles spread over 6-9 trips. She's a mobile Hairdresser.
So basically the worst possible use case for a DPF equipped engine. She simply doesn't have a suitable car for her needs.

rkwm1

1,476 posts

101 months

Thursday 17th August 2017
quotequote all
My Macan is starting to play up now. Its 10 weeks old and now covered 2600 miles.

A couple of weeks ago the DPF warning came on, so it was dropped off to OPC and a forced regeneration carried out. Again today less than 250 miles since the last regeneration the warning light came on again. The AA turned up and carried out another forced regeneration on the drive.

On the first occasion it did approximately 1300 miles in the 14 days prior to the fault. It was driven 250 miles to destination, parked up for 24 hours and then driven back 250 miles, twice. Both drives were on motorway and A roads in generally light traffic.

Yesterday day i did a 80 mile round trip on motorway and today the warning came up again.

This is my 3rd Macan and the first i have had issue with. The other 2 covered around 30K miles between them. Seems to me the new software/update is causing the problems.

Regardless of driving style and distances covered this should not be happening!

We'll see what happens over the coming weeks, but if it happens again it will be going back and a GTS will be ordered instead.



moonigan

Original Poster:

2,127 posts

240 months

Friday 18th August 2017
quotequote all
rkwm1 said:
My Macan is starting to play up now. Its 10 weeks old and now covered 2600 miles.

A couple of weeks ago the DPF warning came on, so it was dropped off to OPC and a forced regeneration carried out. Again today less than 250 miles since the last regeneration the warning light came on again. The AA turned up and carried out another forced regeneration on the drive.

On the first occasion it did approximately 1300 miles in the 14 days prior to the fault. It was driven 250 miles to destination, parked up for 24 hours and then driven back 250 miles, twice. Both drives were on motorway and A roads in generally light traffic.

Yesterday day i did a 80 mile round trip on motorway and today the warning came up again.

This is my 3rd Macan and the first i have had issue with. The other 2 covered around 30K miles between them. Seems to me the new software/update is causing the problems.

Regardless of driving style and distances covered this should not be happening!

We'll see what happens over the coming weeks, but if it happens again it will be going back and a GTS will be ordered instead.
wait for someone to come along and tell you that you have bought the wrong car for your needs rolleyes I've considered swapping to the petrol but I don't see why I should take a bath on the diesel if there is a fundamental problem with the car.

Mr2Mike

20,143 posts

254 months

Friday 18th August 2017
quotequote all
rkwm1 said:
Regardless of driving style and distances covered this should not be happening!
Wrong, it's well known that driving style and distances have a profound effect on the longevity of a DPF, and this is for all manufacturers, not just Porsche.

Gary C

12,313 posts

178 months

Friday 18th August 2017
quotequote all
rkwm1 said:
My Macan is starting to play up now. Its 10 weeks old and now covered 2600 miles.

A couple of weeks ago the DPF warning came on, so it was dropped off to OPC and a forced regeneration carried out. Again today less than 250 miles since the last regeneration the warning light came on again. The AA turned up and carried out another forced regeneration on the drive.

On the first occasion it did approximately 1300 miles in the 14 days prior to the fault. It was driven 250 miles to destination, parked up for 24 hours and then driven back 250 miles, twice. Both drives were on motorway and A roads in generally light traffic.

Yesterday day i did a 80 mile round trip on motorway and today the warning came up again.

This is my 3rd Macan and the first i have had issue with. The other 2 covered around 30K miles between them. Seems to me the new software/update is causing the problems.

Regardless of driving style and distances covered this should not be happening!

We'll see what happens over the coming weeks, but if it happens again it will be going back and a GTS will be ordered instead.
But it's not really a fault though is it.

Its the inevitable consequence of having a dpf that doesn't get a chance to regenerate.

Now some manufacturers have better regen/dpf strategy's but if you get a dpf warning, take it for a drive at the advised speed etc down the mway! It's simple.

Never had a dpf problem with any of our diesel cars.

Slippydiff

14,742 posts

222 months

Friday 18th August 2017
quotequote all
rkwm1 said:
My Macan is starting to play up now. Its 10 weeks old and now covered 2600 miles.

A couple of weeks ago the DPF warning came on, so it was dropped off to OPC and a forced regeneration carried out. Again today less than 250 miles since the last regeneration the warning light came on again. The AA turned up and carried out another forced regeneration on the drive.

On the first occasion it did approximately 1300 miles in the 14 days prior to the fault. It was driven 250 miles to destination, parked up for 24 hours and then driven back 250 miles, twice. Both drives were on motorway and A roads in generally light traffic.

Yesterday day i did a 80 mile round trip on motorway and today the warning came up again.

This is my 3rd Macan and the first i have had issue with. The other 2 covered around 30K miles between them. Seems to me the new software/update is causing the problems.

Regardless of driving style and distances covered this should not be happening!

We'll see what happens over the coming weeks, but if it happens again it will be going back and a GTS will be ordered instead
idea

moonigan said:
wait for someone to come along and tell you that you have bought the wrong car for your needs rolleyes I've considered swapping to the petrol but I don't see why I should take a bath on the diesel if there is a fundamental problem with the car.
You my friend are experiencing what's known as a double whammy. Firstly you bought a diesel engined vehicle not ideally suited for your modus operandi, but you also did so from a manufacturing group currently having to pay out millions of pounds for cheating emissions tests.....

When VAG rolled out the modified software for the affected vehicles, many owners complained of issues. I suspect that the DPF problems you and others are experiencing, will be one of those issues (and my guess is a further fix will required yet)

But the fact is, you didn't stop to think, instead you waltzed into your local OPC, eagerly brandishing your chequebook, wanting to buy into a lifestyle/brand that you thought would suit your wife's needs. More fool you.

What you didn't do is the required due diligence prior to buying, as if you had considered the situation more carefully and in the process made yourself better informed, you'd have most likely not bought the vehicle you did, and I imagine that fact is beginning to smart a tad.

MrBarry123

6,025 posts

120 months

Friday 18th August 2017
quotequote all
moonigan said:
wait for someone to come along and tell you that you have bought the wrong car for your needs rolleyes I've considered swapping to the petrol but I don't see why I should take a bath on the diesel if there is a fundamental problem with the car.
There isn't. The problem is the way the car is being driven.

The probable reason why there's been a sharp increase in the number of DPF related issues is because all of those people who bought one 2-3 years' ago for shortish journeys are only now starting to have the problem due to the cumulative effect of shortish journeys over a 2-3 year period.

The Macan is holding its value well so I can't see you being spanked for moving to a petrol.

ETA: Slippydiff - strong, but fair.

anonymous-user

53 months

Friday 18th August 2017
quotequote all
My 2015 Toureg has done 17,000 miles, it's never had a DPF issue flash up.

I do 4 miles to work, 4 miles home and maybe another 2 or 3 at lunch time. It probably does a few more miles over the weekend and the odd run to North Devon (110ish miles each way) every 3 or 4 months.

It doesn't sound right to me, I know lots of low mileage drivers with diesels, my wife does a round trip of 10 miles every day for the school run and her X4 doesn't have any DPF issues either.

I'm pretty sure the manufacturers design their cars to do anything from 5 miles a day to 500, DPF regen would have been taken into consideration no matter what mileage the driver covers.

I think your car is faulty, I don't think your decision to buy a diesel and cover low mileage is the issue.

moonigan

Original Poster:

2,127 posts

240 months

Friday 18th August 2017
quotequote all
Slippydiff said:
You my friend are experiencing what's known as a double whammy. Firstly you bought a diesel engined vehicle not ideally suited for your modus operandi, but you also did so from a manufacturing group currently having to pay out millions of pounds for cheating emissions tests.....

When VAG rolled out the modified software for the affected vehicles, many owners complained of issues. I suspect that the DPF problems you and others are experiencing, will be one of those issues (and my guess is a further fix will required yet)

But the fact is, you didn't stop to think, instead you waltzed into your local OPC, eagerly brandishing your chequebook, wanting to buy into a lifestyle/brand that you thought would suit your wife's needs. More fool you.

What you didn't do is the required due diligence prior to buying, as if you had considered the situation more carefully and in the process made yourself better informed, you'd have most likely not bought the vehicle you did, and I imagine that fact is beginning to smart a tad.
Firstly I'm not your friend and for that I'm thankful because I'd hate to have to endure your condescending holier than thou attitude face to face. I've read quite a few of your posts and you seem to know your cheddar so its a shame you have to resort to personal digs.