The reductant heater (DEF heater) has went out. Ford will not honor the 5 year/ 60,000 miles power train warranty or the 8 year/ 80,000 mile emissions warranty to repair the issue. According to web sources dealerships maintain a regular supply of these heaters as they replace 5 to 6 a week in the winter. My truck is 4 years and 58,000 miles.
2016 Ford F-250 SD transmission complaints
Page 2 of 2: complaints 11 to 14 of 14, newest first, as owners wrote them.
Death wobble front end at highway speeds.
Service engine light came on twice while vehicle was under warranty. Dealer serviced both times and was unable to rectify or understand the problem. They only cleared the fault codes. The code identified was for the reductant heater pump - low voltage. The same code just came back on for the 3rd time - this time identified by a diesel performance shop - with advice to replace the reductant pump. Previous make and model superduty trucks have had recalls for the same thing. This is an obvious issue, not sure why ford service shops could not rectify. Truck is now out of warranty and I am forced to pay out of pocket. Unacceptable service and care! -cold weather each time -engine light comes on - same code each time -reduced speed and sluggish performance -code cleared - truck performs normal -obvious that the reductant heat pump is not doing what it is designed to do.
I was driving down the highway and all of a sudden twice within 10 miles of each other my truck started violently shaking alost sending me into another lane and losing control. Had to slow down almost to a stop before it would quit.
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