I've had my 2018 3.0 2 years (and 2 weeks). Yesterday I got the yellow time to regen warning - drive for 20 mins etc. I was in the town so could only do what traffic allowed. At the next lights, I got the green success message - phew.

Then 10 mins later - bong, limp mode, red DPF message - seek service etc.

This car is fully serviced, kept topped up with AdBlue, driven varied - tows, distance, some short, etc. I don't do pointless journeys.

The only recent thing I have done different is not bother turning off Stop Start.

So, read the long posts on here and panicked. Seems like it's going to be expensive etc.

Plugged in my reader, see soot of 30.8g. Tried the regen button and to my surprise, it worked! I continued in 5th at 50 for 30 mins and soot is now 5.7g. Am I lucky, or sensor probs, or time bomb?

Anything I should check immediately to ensure we stay good? __
2018 L405 3.0 TDV6 Vogue SE Fuji White
2000 4.6 V8 HSE Oxford Blue
1994 3.9 V8 Vogue Ardennes Green - resto project

Land Rover History:
2010 3.6 TDV8 Autobiography Stornoway Grey
2001 Discovery 2 TD5 GS
1999 Discovery 2 V8i XS
1994 Discovery 300Tdi
1993 Discovery 200Tdi
1989 Range Rover Vogue SE 3.5EFi
1976 Series 3 2.25
1977 Range Rover 2 door 3.5 Carb

Looks like you were lucky when you did a forced regen, as the system inhibits automatic regens at 28.5g and red warning is 31.5 so its essential to do a forced regen when red light comes on.
At 32.5g game over engine stopped.



It could be just simply your driving style short journeys and towing with interrupted regens has accumulated into extra soot load. If you are in long queues and stop start in traffic jams then you can easily get into this position.

keep an eye on soot build up to the next regen if it goes to amber then maybe you have a sensor issue any DTC's? In my SDV8 it usually goes into Active Regen above 20.4g your 3.0 might well be slightly different?
What's the distance between last regen? 2018 SE SDV8 4.4 Byron Blue

This is the first time ive paid attention to dpf, so not been monitoring. Thats what ill do though from now on. __
2018 L405 3.0 TDV6 Vogue SE Fuji White
2000 4.6 V8 HSE Oxford Blue
1994 3.9 V8 Vogue Ardennes Green - resto project

Land Rover History:
2010 3.6 TDV8 Autobiography Stornoway Grey
2001 Discovery 2 TD5 GS
1999 Discovery 2 V8i XS
1994 Discovery 300Tdi
1993 Discovery 200Tdi
1989 Range Rover Vogue SE 3.5EFi
1976 Series 3 2.25
1977 Range Rover 2 door 3.5 Carb

j,

regarding your holding it in 5th @ 50 for 30mins ... seems quite a long time. My understanding is that the notion of holding the revs high for a regen is not what the L405 system really wants as ideal conditions for regen process.

The L405's system seems to regen best when its able to throw additional fuel in on top of what the current load is. So the more capacity over current load you have, the more fuel it can throw in for regen ... holding revs artificially high ( like 5th gear ) potentially reduces the spare capacity. It may regen a lot quicker in a higher gear, because its running at lower revs in that higher gear.

I'd say the process seems quite speed dependent too. For me, it feels like there is a notable difference in the regen speed between 40, 50, 60, and 70mpg cruising speed. Next time, I'd try just leaving it in D and driving at 60-70 and you might see it complete the process quicker.

Lastly, I do a fair amount of short trips (sub 10 miles) which includes A-road sections. I've often triggered a regen on such journeys, but its a long way off completing the regen by the time I get to my destination. I've found that when I come to a stop, but leave if running in N and hold the revs at around 1200-1500, the DPF figure will continue to drop and I can complete the regen fully, even though it has been a short journey. V8 or else ...