Hi Guys & Girls
Without prejudice
I know we have talked about this many times, but this Ash issue we have on our cars should show itself before it gets to 100%.
If the soot load is monitored by the differential pressure sensor, then the soot regeneration warning light and message should have been triggered well before the Ash message comes on.
But on our cars the soot regeneration information in the drivers manual doesn't correspond with what comes up on the dashboard.
You will see in the photos below what I mean, now bearing in mind the soot load warning message as never been seen on any of our faulty cars, so the basic soot load driver information is incorrect on our cars.
You would expect a GPF filter thats supposedly blocked with Ash, would have difficulty in accommodating the soot volumes generated by normal driving.
You would also expect some soot to be present when the filter is saying its full, and you never see a differential pressure sensor reading that would indicate an high enough pressure to put the soot light on.
And also, as the GPF Filter starts accumulating Ash, why isn't the pressure increase picked up by the soot sensor as it increases.
All we get is a engine light on, and a message saying, ENGINE CONTROL FAULT, CONSULT DEALER, DRIVING PERMITTED.
So these cars do not have a working pressure sensor, that puts on the soot warning light and the message, so that the driver can carry out his own regeneration of the GPF filter.
Enclose a photo of the Particulate filter Regeneration message you never see below.
Sorry this post contains a few photos of information received from Dealers on our cars, if you are not a member of the club you may not see them.
One of these photos shows you a written response from Porsche Customer Care relating to the function of the soot warning light as Porsche Technical understands it.
This is the car that Porsche Customer Care also confirmed that the Ash load issue was indeed a manufacturing defect, we have the case number to support this.
Also in the Porsche internal memo, it instruts the Porsche technicians to check the functionality of the GPF differential pressure sensor.
So you would normally check the pressure readings at idle, at at 2.5 to 3.0 rpm, if the filter was blocked you would see the pressure increase dramatically, because you would be producing more soot.
We are fed up of asking our Dealers to check the back pressure on our cars because they will not do it.
But if you think about it, they are not even following the Porsche instructions as written in the internal memo.
If they did, they would find no Backpressure, and no need to replace the filter.
Also enclosed is a photo of a recent VHC check showing what the Dealer found and whats needed to be done on this Cayman 718, the PPN is the internal document instructions they follow suggesting a regeneration does not burn off the Ash.
Whats really incredible is the Ash can disappear and can come back on these cars, and our Porsche Ash sometimes can be burnt off, its a miracle.
What are the reasons for our Dealers not doing the correct diagnosis of a suspected blocked filter with ASH.
We would like to hear them, perhaps Porsche Technical Reading could help us with this question, because the Dealers won't tell us, they blame Porsche Technical.
Fingers crossed
Dave
Without prejudice
I know we have talked about this many times, but this Ash issue we have on our cars should show itself before it gets to 100%.
If the soot load is monitored by the differential pressure sensor, then the soot regeneration warning light and message should have been triggered well before the Ash message comes on.
But on our cars the soot regeneration information in the drivers manual doesn't correspond with what comes up on the dashboard.
You will see in the photos below what I mean, now bearing in mind the soot load warning message as never been seen on any of our faulty cars, so the basic soot load driver information is incorrect on our cars.
You would expect a GPF filter thats supposedly blocked with Ash, would have difficulty in accommodating the soot volumes generated by normal driving.
You would also expect some soot to be present when the filter is saying its full, and you never see a differential pressure sensor reading that would indicate an high enough pressure to put the soot light on.
And also, as the GPF Filter starts accumulating Ash, why isn't the pressure increase picked up by the soot sensor as it increases.
All we get is a engine light on, and a message saying, ENGINE CONTROL FAULT, CONSULT DEALER, DRIVING PERMITTED.
So these cars do not have a working pressure sensor, that puts on the soot warning light and the message, so that the driver can carry out his own regeneration of the GPF filter.
Enclose a photo of the Particulate filter Regeneration message you never see below.
Sorry this post contains a few photos of information received from Dealers on our cars, if you are not a member of the club you may not see them.
One of these photos shows you a written response from Porsche Customer Care relating to the function of the soot warning light as Porsche Technical understands it.
This is the car that Porsche Customer Care also confirmed that the Ash load issue was indeed a manufacturing defect, we have the case number to support this.
Also in the Porsche internal memo, it instruts the Porsche technicians to check the functionality of the GPF differential pressure sensor.
So you would normally check the pressure readings at idle, at at 2.5 to 3.0 rpm, if the filter was blocked you would see the pressure increase dramatically, because you would be producing more soot.
We are fed up of asking our Dealers to check the back pressure on our cars because they will not do it.
But if you think about it, they are not even following the Porsche instructions as written in the internal memo.
If they did, they would find no Backpressure, and no need to replace the filter.
Also enclosed is a photo of a recent VHC check showing what the Dealer found and whats needed to be done on this Cayman 718, the PPN is the internal document instructions they follow suggesting a regeneration does not burn off the Ash.
Whats really incredible is the Ash can disappear and can come back on these cars, and our Porsche Ash sometimes can be burnt off, its a miracle.
What are the reasons for our Dealers not doing the correct diagnosis of a suspected blocked filter with ASH.
We would like to hear them, perhaps Porsche Technical Reading could help us with this question, because the Dealers won't tell us, they blame Porsche Technical.
Fingers crossed
Dave
