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Old 08-04-2022, 11:13 PM   #211
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Originally Posted by ROUGHRIDER3 View Post
If the NHTSA is aware of the problem, they are, why has it not been rectified? Many people are being effected by this problem, OTR truckers, construction equipment, Motorhomes, pick-up trucks and more. A problem exist, but they could care less apparently.
I rather doubt they "care less", but regulatory agencies are not characterized by departmental emotion.

As an agency, they have to prioritize which claims to investigate, and then estimate the impact on safety; severity of an incident, statistical likelihood of an incident, and variables that change the basic calculus. After that, there is either more investigation or a review of new complaints, and usually a report. When death or serious injury is likely in a significant percentage of incidents, an agency will move faster. The potential for an incident has less weight than an actual incident when it comes to complaint triage.

Any resources about incidents causing personal injury or property damage resulting from a de-rate condition caused by the DEF sensor/digi-thing?
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Old 08-05-2022, 10:36 AM   #212
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Complaints have been going on for approximatrly 6 years, I would think that is plenty of time to take action to correct problem. I had a manufacturing business for 49 years and any complaints were addressed daily, not years later.

NHSTA should be pro-active, not re-active.
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Old 09-08-2022, 02:42 PM   #213
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My DEF tank is showing 3/8 full, even though it is completely full. It gradually goes up to 5/8 full when driving (just locally). But I'm too worried about having a complete failure while I'm on the road to go anywhere. I've found some DEF heads on Ebay: $1800-$3,000. I called Freightliner, and they have none available to dealers. Has anyone gotten more updates into when and how this problem will be resolved?
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Old 09-08-2022, 03:39 PM   #214
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DEF problems

The DEF system is a very long time problem that I had with my 2014 Entegra. I replaced parts coast coast, including derating in Canada and the most desolate roads in Montana.
Talking to many over the road truckers they or their business mechanics disable the system because they canít afford to travel at 5mph derated or broke down. Their response to isnít it illegal, they reply, ď what repair shop will turn you in once itís discoveredĒ? They wonít be in business long once word gets around that they snitched.
I have been told that Fire Engines, Emergency vehicles and school buses will keep on running properly since you may sacrifice a human life if you canít get to your emergency due to engine derate .
A motor home is a small part of Diesel motors manufactures and their customer base is small Ö..
I do wish you well Don Quixote on your quest.
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Old 09-08-2022, 10:26 PM   #215
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Up Side Down World

Friends, Today we are faced with liars, low lifes who simply lie to us. When you buy an RV, this is what you get, fiorget about the bullshit, stop listinng to many corporate created lie's, get what you get, disreguard
The lie's and bullship, me I sm s 76 year old American
Telling you the truth, they all lie, do he aware.
God bless
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Old 09-09-2022, 03:30 PM   #216
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My DEF tank is showing 3/8 full, even though it is completely full. It gradually goes up to 5/8 full when driving (just locally). But I'm too worried about having a complete failure while I'm on the road to go anywhere. I've found some DEF heads on Ebay: $1800-$3,000. I called Freightliner, and they have none available to dealers. Has anyone gotten more updates into when and how this problem will be resolved?
Do some more looking around iRV2 for "DEF head simulator". It's a small computer (Raspberry Pi) that plugs into the DEF head wire harness and gives "within range data" to the ECM. It does not bypass the DEF injection system or delete it or do anything that defeats the antipollution system - it only tells the ECM that DEF temp, quality, and quantity are normal. You'll still need to make sure your DEF tank is filled. And you'd use this only if your DEF head fails.

That said, this lack of parts must be a new thing, as users have mostly stopped posting about parts being unavailable.
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Old 09-11-2022, 01:47 PM   #217
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I have had 2 DEF head failures. 2017 Tiffin Phaeton. I'm not sure where I heard this but somewhere I heard that it is an emission problem and warrantied for 10 years. Both of mine, had Tiffin overnight the part to a Cummins dealer who installed it. I did not pay for anything both times..Maybe someone can check into the 10 year warranty thing.
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