DPF Filter light came on

[gsmdo]

Hi all,

Not been here in a while, as the convertible is behaving itself... 😆

However, the other day, the DPF light came on, along with a beep.

I dealt with it as I usually do, by taking the car up the three-mile bypass at 70 in fourth gear - an Italian tune-up. This has always worked in the past, but not now... 🤔

So, I bought a bottle of this stuff...

...which arrived this morning. I've put it in the tank, but haven't taken the car out yet.

If it works - huzzah! - but what advice if it doesn't? 🤔

Cheers,

Mike 😎

 

 

 

 

 

[cliffcoggin]

While I am sceptical of these fuel additives, I am open to persuasion by long term results. The treatment may solve a sticking pressure switch in the short term but I question if it can solve the more fundamental problem of the exhaust system being blocked by soot, which is what the DPF switch is telling you.

If the treatment fails to work I understand it is possible to induce an exhaust regeneration with VCDS or similar equipment. Others here may be able to confirm this point.

[Steve Q]

Definitely worth a shot but I'd still recommend a diagnostic check to see if any fault codes flag up for the dpf. You could look at having it professionally cleaned but this may only buy you time. 

[gsmdo]

Thanks. I have a Carly and will give it a scan…👍

[Steve Q]

2 hours ago, gsmdo said:

Thanks. I have a Carly and will give it a scan…👍

Please keep us posted on how you get on 

[gsmdo]

So, I took the convertible out this morning, keeping it in normal performance before it warmed up. After about a mile, I got the flashing glow-plug symbol, and a reduction in power. 🤔

I got to my destination, and switched off. When I restarted, the DPF warning came up, but without the glow-plug lamp, and performance was normal. 

Now up to normal temperatures, I drove it at 70 in fourth gear for about three miles, but on restart, the DPF symbol is still there.

I sat on the driveway with the engine idling, and Carly plugged in. It came up with an odd code - something to do with intermittent signal from the seat belt circuit, and not connected to anything about the engine, so I cleared and rescanned - clean...🤔

I'm going to take it for a spin this afternoon with Carly plugged in to see if anything comes to light. 

I spoke to my mate at Norwich Audi, who tells me that a forced DPF re-gen is £200 - but advised me to shop around. He also mentioned, in passing, that a new DPF was £2,500... 😱

So, I've got it provisionally booked in at CAT Automotive next Friday, for investigation. Their comment was that they need to see why the DPF isn't re-genning on its own, and cure that problem, rather than just addressing the symptom and forcing a re-gen.

I'll keep updating this thread - but please jump in with ideas...

Cheers,

Mike 😎