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Old 10-12-2019, 07:07 PM   #1
Junior Member
 
Brand: Thor Motor Coach
State: Missouri
Posts: 1
THOR #13416
DEF System

I have found the DEF system including the location of fill tank and
and constant check engine light including going into limp mode to be a huge watch out and Achilles heal of the Mercedes Sprinter. My 2015 unit has only 10,000 miles and has been to dealer at least 5 times for warranty work attached to this system. The last 3 trips I took the DEF system worked fine other than the hassle of opening engine bonnet to fill. I am sure there are other people who have probably not had my experience but wanted to share in order to push company to improve. I do love way RV. Drives however lately noticed a strange
Flutter annoying wind noise issue at Higher speeds, has anyone had this e perience? JHL
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Old 10-12-2019, 07:18 PM   #2
I Think We're Lost!
 
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Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 11,283
THOR #8860
Other than wishing that the fill spout for the DEF tank sat lower: ours has been great!
Sorry...
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