[ryanwarriors9]

so I was out in the car yesterday and the dreaded DPF light came on after a few miles of driving. I have tried to give the car a good blast to re gen it but it isn't budging. when I turn the car off and fire it back up the light stays off but then comes back on after a few miles. the car has done 75k miles with good history ill be honest I knew I would have the problem at some point as everyone will do they don't last for ever.

im thinking about removing the dpf by taking it off cutting the box and removing everything inside welding it back up as I know its an mot fail now? (correct me if im wrong but I think its just a visual check to see if dpf is still there?)
I am also thinking at the same time blanking the egr (again any recommendations or advice if anyone has any)
I have had the car re mapped as well which I will get them to do again for me after

I have read it is a b*****d of a job
can anyone shed some light on any previous experience
any help would be great
Thanks
Ryan

[Sensible_]

This is super common right now. Every other thread is DPF related.

The bottom line is finding out what's causing the DPF to not regenerate.

For regeneration to even be attempted certain conditions have to be met. One common cause are glow plug faults. Have the vehicle diagnosed with some BMW spec diagnostic equipment before doing anything.

[ryanwarriors9]

Originally Posted by Sensible_

This is super common right now. Every other thread is DPF related.

The bottom line is finding out what's causing the DPF to not regenerate.

For regeneration to even be attempted certain conditions have to be met. One common cause are glow plug faults. Have the vehicle diagnosed with some BMW spec diagnostic equipment before doing anything.

sweet thanks would something be picked up even if the light dosent come on because it dosent always come on I used the car yesterday morning and that's when it first came on after about 5 miles of driving I parked up and did my shopping same drive home and didn't come on?

got in the car this morning to come to work roughly similar mileage and as I pulled into works car park on the light came. the garage isn't far from mine that's all where I will be taking it to

Thanks for your reply

[Sensible_]

Yes, is the garage a BMW specialist?

If not I'd proceed with caution unless you know them well of course.

There are 2 DPF fault codes, only the later issues a check control dash warning meaning the DPF is heavily clogged. Even if that light goes out, I'd bet you still have the first fault code (partially blocked).

Any decent garage should in your situation;

1. Run diagnostics
2. Fix any faults which prevent DPF from regenerating e.g. Faulty glow plugs / glow plug controller, other sensor problems...
3. Add some DPF cleaner
4. Forced regen.

------

Out of interest using the hidden menu what is your coolant temperature when idle and driving around having warmed up? Regen won't take place if it's below 75 degrees C. This might indicate thermostat troubles.

What engine do you have? M or N57?

[ryanwarriors9]

Originally Posted by Sensible_

Yes, is the garage a BMW specialist?

If not I'd proceed with caution unless you know them well of course.

There are 2 DPF fault codes, only the later issues a check control dash warning meaning the DPF is heavily clogged. Even if that light goes out, I'd bet you still have the first fault code (partially blocked).

Any decent garage should in your situation;

1. Run diagnostics
2. Fix any faults which prevent DPF from regenerating e.g. Faulty glow plugs / glow plug controller, other sensor problems...
3. Add some DPF cleaner
4. Forced regen.

------

Out of interest using the hidden menu what is your coolant temperature when idle and driving around having warmed up? Regen won't take place if it's below 75 degrees C. This might indicate thermostat troubles.

What engine do you have? M or N57?

going to take it to RS tuning in leeds paul knows his stuff I know the guys down there.

im not sure on running temp how would I check that ? will the diagnostics pick that up without using the hidden menu?

my cars 325d m sport 2007 (I know this might sound stupid not sure on the engine)
Thanks

[Sensible_]

No worries. In that I'm sure they are more than qualified to deal with your pesky DPF. As you say, make sure you weigh up the pros and cons of DPF delete first

[ryanwarriors9]

Originally Posted by Sensible_

No worries. In that I'm sure they are more than qualified to deal with your pesky DPF. As you say, make sure you weigh up the pros and cons of DPF delete first

yep haha
I bought the car knowing at some point I could have the dreaded dpf issue dosent help my circumstances changed and hardly do motorway miles now so its bound to get clogged hence the reason im considering removing

[ryanwarriors9]

Dpf knackered so it's coming off next Thursday along with a map and going to look into taking off the egr and possible hybrid next year