'17 TD6 needs a new DPF. I have 78k miles on it. NYS inspection is up and it needs to pass emissions here. All the warranty info suggests I should still be covered under the emissions 8/80k warranty.

Anyone here had experience with this? How much of a battle am I in for? My plan is to show up at the dealer, tell them I want it to pass inspection, put down the printed out warranty info, and tell them I am not picking it up until it has a new DPF.

Thoughts? Appreciate it.

Related side note, I have called the Rochester New York JLR dealer every day for the past 6 days and left three messages, the last time I got someone from sales who apologizes all over and said they were completely overwhelmed and had no one to work. Said she would definitely give service my note, and havent heard anything. I then Called Buffalo and Albany and no one picked up there either. Yet there is a 100 car per dealer wait on the new RR, and its the most re-purchased car in the country. This brand is insanity.

 

Just spoke to the Buffalo dealership, they told me while they have seen this before, its a whole process, and what I should do is call JLR NA and start with them. We'll see.

 

I wouldn’t trust that it’s an accurate diagnosis. If they’ll cover it under warranty then maybe there’d be no harm in having them do it, but depending on what triggered this diagnosis, there’s a good chance it’s a much cheaper and simpler fix.

Watch O’reilly’s mobile mechanic on YouTube and he deals with these on a weekly basis. He’s based in Europe and the fault codes and countdown are an extremely common problem on nearly all diesels with DEF/DPF systems. Typical causes have nothing to do with the actual DPF filter and yet are frequently misdiagnosed by LR shops and specialists to the tune of thousands of dollars of repairs that don’t solve the problem. There’s a small chance the DPF filter itself is the issue, but I’ve seen a number of people that had the entire system replaced just to have the exact issue come back the next day.

Dirty DEF injector may need cleaned if it hasn’t been done, throttle body may be sticking, MAP sensor may be covered in soot. I let my DEF get low on a towing trip this last summer and it triggered a fault that I’ve been battling off an on for the last few months, but measurements on the DPF show low pressure and very low soot mass.

I’m only a thousand miles removed from my most recent DEF fault, so I’m still unsure that I’ve solved the issue. I fully expect it to come back at some point, but I’ve cleaned the DEF injector, replaced MAP sensor (I damaged the original when cleaning it), I topped the DEF off and used the GAP IID tool to reset dosing adaptations and restart catalyst start inhibit as well as using it to trigger regens. That was only about a thousand miles ago, but I did a towing trip in that time as well as a handful of around town trips and so far the warning hadn’t come back. I know I just threw a lot at you and if you’ve already researched and attempted these things, I’m sorry. I just would almost be willing to bet money that the DPF filter is just fine - it may need a cleaning, but that also can be done cheaply and easily on your own.