DPF regen needed again after 6 months e class 2018

[Isa0324]

Hi- i have a merc e class e350 2018.

My engine light went on and went on limp mode on Monday after 1500 motorway miles at high speeds through europe.

Took it to mercedes as have extended warranty, they claim it needs a dpf regen. ( which is not covered under warranty which I'm slightly annoyed as i been paying for it for 2 years and one issue arises they quick to say its not covered, i will be cancelling it nonetheless)

same thing happened in feb/march and my friend done the regen issues solved.

Surely this should not be happening every 6 months ?

Anything i should be made aware off ?

Was also advised from a family member to deep clean the dpf ,where they remove it and put it into a machine to clean it . He done it in his RR sport.

Many thanks

 

[TeddyRuxpin]

Do you take it on long trips occasionally?

 

[Fastcar155]

Hi , suggest you don't cancel your Mercedes Extended Warranty but read what is / is not coved.

Your extended warranty is a financial product and if you are not sure what is covered contact the Insurance company.( Or contact another Mercedes dealer.) to inquire.

I have found Mercedes dealers excellent or terrible ( no middle ground )

 

[Isa0324]

Do you take it on long trips occasionally?

Not to often.
The car is on 70k miles now

 

[rayaans]

Not to often.
The car is on 70k miles now

Well that's your answer.

The warranty doesn't cover it because technically it's self inflicted. It needs a good 1-2 hour motorway run per fortnight as a minimum really

 

[ALFAitalia]

It should still try and regen itself once in a while though.......motorway journey or not.....just as long as it reaches the requirements.....enough fuel, up to full op temp etc. My car does it about every 500 miles.....but this can get as low as 160 miles if I do lots of short journeys ( which is about all it does now....hence a petrol car will replace it) or stop the engine before the 10 minutes required to complete a regen is up too many times....in which case it will try again the next time the engine is hot enough. Never needed to go to the dealer to force one though in about 170,000 miles....something a bit adrift there.

 

[markjay]

Invest in an iCarsoft and get the tegen done yourself.

And having the DPF dismantled and cleaned is not a bad idea either.

 

[TeddyRuxpin]

Re-reading the OP, he did say the EML came one while going across Europe at high speed.... enough to sort the DPF out if the problem was that simple, assuming it hadn't lived doing short trips all of its live up until that point.. which may be the case

 

[Isa0324]

Re-reading the OP, he did say the EML came one while going across Europe at high speed.... enough to sort the DPF out if the problem was that simple, assuming it hadn't lived doing short trips all of its live up until that point.. which may be the case

Well. Apart from this long trip . 2 months prior to that i went on another long trip to france. Hence why i think it’s something more than just needing a dpf regen.

Will speak to the Mercedes technician tomorrow and explain to him.

 

[markjay]

There may be an issue preventing the car for doing a regen. Either a fault (e.g. sensor fault), or the DPF may have become to clogged to regen. A specialist with STAR will be able to read the fault codes and advise further.

 

[markjay]

BTW, I did read on other forums that regular use of premium Diesel will help prevent DPF issues on cars that are not used for long journeys, the idea is that the premium fuel burns cleaner, but I don't know if this is actually the case. I did run a Diesel car for 5 years on premium Diesel, and in spite of doing only short journeys had no DPF related issues, but it's a sample size of 1 so could very well just be a coincidence.

 

[keith of kent]

M<y 2015 E350 has now done 60K miles. A lot of short trips up to 40 miles with except for covid years along continental drive.
Some will say its snake oil but twice annually I put a bottle of Wynns DPF cleaner in the tank and I only use premium diesel.
I am in tune with my car and if it starts to idle at 800rpm rather than 600 then it's into manual mode and drive keeping the revs over 2000 for about 10-15 miles until it idles as normal.
I have had no problems. A similar senario with my 2010 E350, although cannot remember if that had a DPF

 

[Bobby Dazzler]

BTW, I did read on other forums that regular use of premium Diesel will help prevent DPF issues on cars that are not used for long journeys, the idea is that the premium fuel burns cleaner,

GTL (Gas To Liquid) diesel does burn cleaner but it’s expensive. Shell VPower Diesel used to be GTL when I used it., but I’m not sure whether that is still the case. I/ been a very long time since I owned a diesel.

 

[Fastcar155]

GTL (Gas To Liquid) diesel does burn cleaner but it’s expensive. Shell VPower Diesel used to be GTL when I used it., but I’m not sure whether that is still the case. I/ been a very long time since I owned a diesel.

Hi , think that BP diesel is a GTL product.

 

[Bobby Dazzler]

Hi , think that BP diesel is a GTL product.

Quite possibly

 

[WilliamParsons]

GTL (Gas To Liquid) diesel does burn cleaner but it’s expensive. Shell VPower Diesel used to be GTL when I used it., but I’m not sure whether that is still the case. I/ been a very long time since I owned a diesel.

As of my last knowledge update in September 2021, Shell VPower Diesel was indeed known to contain GTL (Gas To Liquid) components, which is designed to burn cleaner and improve engine performance. However, the composition of fuels can change, so I recommend checking with Shell or referring to their official website or contacting a local Shell station for the most up-to-date information on the composition of their VPower Diesel fuel.