Understanding DPF Regens

[Optimus prime]

Possibly. Could just be coincidence that it looks like 800 miles between when in fact it's done some in between.

I think your find its because you only hit the criteria then I bet if you run vcds you would find that your soot loading was quite high due to the short trips and the long run ticks all the boxes for a regen.  So it kind of gives the impression of a regen every 800 but that is not the case.

[Optimus prime]

This helps

https://www.youtube.com/watch?v=Iuf9a3P3brY

[p3asa]

There should be a light on the dash that tells you when its doing its regen.
I don't know how many times I've come home, parked on the drive and the fans have been going full pelt for at least 15minutes after me switching off.
I'd much rather just give it a blast on a nearby dual carriageway if I knew it was doing the regen when I was driving home.

That video was pants. Tells you nothing.
This ones not bad https://www.youtube.com/watch?v=aMKpo74P6SE

[Optimus prime]

There should be a light on the dash that tells you when its doing its regen.
I don't know how many times I've come home, parked on the drive and the fans have been going full pelt for at least 15minutes after me switching off.
I'd much rather just give it a blast on a nearby dual carriageway if I knew it was doing the regen when I was driving home.

Sorry your wrong the lamp only lights as a warning to say that your soot loading has reached a specific level and you therefore need to follow the instructions in the manual to clear it.  If the car has been regenerating correctly on its own then this light should never appear.

Also a blast will not clear a blocked dpf nor will it speed up the regen process & it is not needed on the MK7 as they will regen perfectly when stationary once the process has started, hence the option in vcds to do a stationary emergency /service regen

[p3asa]

There should be a light on the dash that tells you when its doing its regen.
I don't know how many times I've come home, parked on the drive and the fans have been going full pelt for at least 15minutes after me switching off.
I'd much rather just give it a blast on a nearby dual carriageway if I knew it was doing the regen when I was driving home.

Sorry your wrong the lamp only lights as a warning to say that your soot loading has reached a specific level and you therefore need to follow the instructions in the manual to clear it.  If the car has been regenerating correctly on its own then this light should never appear.

Also a blast will not clear a blocked dpf nor will it speed up the regen process & it is not needed on the MK7 as they will regen perfectly when stationary once the process has started, hence the option in vcds to do a stationary emergency /service regen

What do yo mean I'm wrong?? I never said there was a light. I said there should be a light to tell you its currently doing a regen as that would be much more beneficial.

[Optimus prime]

There should be a light on the dash that tells you when its doing its regen.
I don't know how many times I've come home, parked on the drive and the fans have been going full pelt for at least 15minutes after me switching off.
I'd much rather just give it a blast on a nearby dual carriageway if I knew it was doing the regen when I was driving home.

Sorry your wrong the lamp only lights as a warning to say that your soot loading has reached a specific level and you therefore need to follow the instructions in the manual to clear it.  If the car has been regenerating correctly on its own then this light should never appear.

Also a blast will not clear a blocked dpf nor will it speed up the regen process & it is not needed on the MK7 as they will regen perfectly when stationary once the process has started, hence the option in vcds to do a stationary emergency /service regen

What do yo mean I'm wrong?? I never said there was a light. I said there should be a light to tell you its currently doing a regen as that would be much more beneficial.

Sorry reading on iphone I read it as "you should" already have a light not that it would be a good idea.  My error 

[p3asa]

Sorry reading on iphone I read it as "you should" already have a light not that it would be a good idea.  My error 

No bother. After reading it again myself I could see where you are coming from. 

It would definitely suit me better to be notified it was happening. I've had my neighbour come to the door before saying I've left my car running because of it!!
I even know someone who phoned Audi to say their car was faulty because all fans were blaring as they parked up and attempted to walk away 

[monkeyhanger]

I don't believe that the fans blaring at the end of a long journey is an indication of an active DPF regen going on in a MK7 Golf with a TDI engine. The DPF is right next to the exhaust manifold now rather than way down the exhaust system, so that it warms up quicker and can be effective from shorter journeys.

The DPF needs to cool down at the end of a long journey, and this is the reason the fans are blaring.

[p3asa]

The DPF needs to cool down at the end of a long journey, and this is the reason the fans are blaring.

Cheers.