Start/Stop Stops Working - Engine Must Be Running

Faults and Technical chat for the Seat Ateca
Rory
Posts: 55
Joined: Mon Aug 20, 2018 2:31 pm

Re: Start/Stop Stops Working - Engine Must Be Running

Post by Rory » Fri Sep 14, 2018 3:55 pm

Tet70 wrote:
Fri Sep 14, 2018 8:33 am
So why not just drive normally, and if the DPF light goes on, THEN drive the uninterrupted regen cycle.
Well, only because you can't predict when the light will come on, and then it may not be convenient to go for a decent run. It needs a good run too, not just the normal active regen journey.

I suppose it also feels sensible to let it finish what it's started. If you stop it's got to got to reheat the dpf again with the fuel use and heat cycling that involves.


Tet70
Posts: 426
Joined: Sun Mar 26, 2017 9:40 am
Location: Finland

Re: Start/Stop Stops Working - Engine Must Be Running

Post by Tet70 » Mon Sep 17, 2018 6:32 am

Rory wrote:
Fri Sep 14, 2018 3:55 pm
Tet70 wrote:
Fri Sep 14, 2018 8:33 am
So why not just drive normally, and if the DPF light goes on, THEN drive the uninterrupted regen cycle.
Well, only because you can't predict when the light will come on, and then it may not be convenient to go for a decent run. It needs a good run too, not just the normal active regen journey.

I suppose it also feels sensible to let it finish what it's started. If you stop it's got to got to reheat the dpf again with the fuel use and heat cycling that involves.
Ok, but how do you know the regen cycle is ongoing? At least on my previous Skoda, there was no clear indication. When you stopped, you would have to let the engine run and step outside, to inspect whether the fans are running at maximum speed or not, and is there a "chemical smell" around your car.

And what comes to the regen procedure needed, when the DPF light goes on, here's what the SSP (Self-study Programme) document 336 says about it:
With this signal, the driver is requested to drive at more than 60km/h at a constant rate for a period of about
15 minutes. The filter can be cleaned most effectively if the vehicle is driven in 4th or 5th gear in a speed range of
approximately 2000 rpm. The warning lamp must go out after this measure.
Of course that document is quite old (it's from 2005), but I doubt the required procedure has changed much.
Jungle Green 1.4 TSI 4Drive DSG Style + quite a lot of extras. Delivered in less than 8 months. :roll:


Rory
Posts: 55
Joined: Mon Aug 20, 2018 2:31 pm

Re: Start/Stop Stops Working - Engine Must Be Running

Post by Rory » Mon Sep 17, 2018 1:49 pm

Tet70 wrote:
Mon Sep 17, 2018 6:32 am
Ok, but how do you know the regen cycle is ongoing?
See thread title. :)

We don't use SS in ours and I can't tell but my wife can pick it up as she arrives home, helped by the car being parked in a corner so she can pick up the extra noise. Supposedly the idle speed is a little higher but I find it varies anyway.

If she notices she'll leave the car running and I take it around the village bypass - I turn SS on, so I can check if regin is still in progress. It needs time, rather than distance or any special driving, when it's doing a normal active regen. I reckon it takes around 10 mins. So the absolute killer would be lots of journeys which take less than around 15 mins (to allow a bit for some warm-up).


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