I had no probelms with my Eos and particulate filter for the first three years (but i do drive it like a diesel turbo should be driven!!) - but then disaster - I leant it to my 66 year old mother for a few months while i was away and she took delight in chugging everywhere in 6th gear trying to get a Guinness Book of Records award for fuel economy!!
I, not realising the havoc awaiting to be unleashed then moved to London and that has just killed it completely. Within weeks of being a city driver, the 1st light has been constantly on and off - every time requires a 2000rpm dash up the motorway at constant speed - problem is though, you have to keep this speed dead constant to regenerate - ideally using cruise control - and that is not always easy around London's surrounding motorways (unless you sneak out at 2am!) Also cruise control gets knocked out by this fault once the engine management gets involved!
VW West London did a full regeneration once about 6 months ago (£130) and this was a total waste of money lasting about 3 days! That said it did stay out of limp mode until yesterday when it very quickly lit up like Blackpool at Xmas with all three lights again!
Today, having tried the habitual Motorway run to burn it clean, i took it to Grays (Independent) at Hanwell who plugged in their diagnostic machine, tried to regenerate it but could not despite, charging £48 for the diagnostic - like I did not already know exactly what the problem was lol ! Thanks Guys!
However, the guy did give me a useful tip (or what seems useful if my Eos had not already had a complete coronary)!
His suggestion was to buy two bottles of fuel cleaner (Comma diesel magic) and instead of putting it in the diesel tank - dismantle, empty and mop out the fuel filter chamber until completely clean then dry and reload filter (or insert new one if black and dirty) and then tip the entire contents of the Diesel Magic into the fuel filter chamber to refill before reassembling.
He did state to do this with engine hot after getting home and then go straight back out for a Motorway run. The desired effect is to burn everything clean - injectors, cylinders, and DPF?
What's the result? Well, its hard to say - limp mode power did increase a little it seemed but thus far the DPF light + others have stayed on - but i'm not sure i'll know the full result until I get them, or VW, to reset the management system as this is the only way out of limp mode I think?
Since earlier today i have researched the problem very extensively and it seems that companies that advertise a DPF cleaning service essentially do the same thing using various fuel and oil additives produced mainly by a company called JLM http://www.jlmlubricants.com/Diesel.html
Also worth viewing this link to a Huntingdon based company http://www.dpf-cleaning.com/dpf_cleaning.html
that offer a £310 ex vat full fuel, oil, air and exhaust DPF system flush service and clean.
If this really works, then its well worth the money as these Eos DPF's are £1,600 to replace plus labour!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Either way, the key seems to be that if you do a lot of stop star commuting or city driving then you MUST add JLM type additives to your fuel monthly to help burn the DPF clean at lower temps.
I'll let you know the results of today's experiment with Diesel Magic?? I suspect that this may solve a lot of engine clogging problems but not this one without some expert help from the likes of JWE automotive.
There are also companies offering to remove the damned thing and reset the management system to not regenerate???