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ganto

continus DEF problem with sprinter

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I have a 2015 road trek e-trek. that has been in the shop 3 times for the same problems. chkEng/chkDEF/10 starts remaining. Mercedes cannot seem to solve the problem they just throw parts at the problem and send you on your merry way, only to have the same problem occur a day a week later. I am curious how many owners are having these problems and if so was there a satisfactory solution??

most of the time the parts replaced are NOX sensors upstream temp sensor DEf dosing valve SCR ( catalytic converter ) and an occasional EGR valve. and after filling the DEF tank once it would not start and left me stranded!!! nothing but a headache and rubbish on wheels buyer beware!!! :angry:. I have an APU installed so I never need to idle the engine making a problematic engine even more problematic than it already is.

Edited by ganto

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We have owned three Sprinters but only the last one had DEF. The only problem I had was getting the DEF bottle to the fill place. Too heavy for me to lift that high. Sorry to hear you are having problems with yours. I hope someone figures out a solution soon.

 

Linda Sand

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The only time that they have problems with the DEF system on the Ford diesel is when the owners keep topping off the DEF tank instead of waiting for the DEF warning light ("800 miles remaining on DEF").

Could it be something like that? Are you filling the DEF tank before it indicates that it needs to be replenished?

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The only time that they have problems with the DEF system on the Ford diesel is when the owners keep topping off the DEF tank instead of waiting for the DEF warning light ("800 miles remaining on DEF").

Could it be something like that? Are you filling the DEF tank before it indicates that it needs to be replenished?

Nope!! it don't even have 10,000 miles on it yet I am wondering if the DEF fluid is going bad and is not as pure as it was when it was first put in the tank I read something about DEF fluid going bad if it sits to long. but you figure that pumping it out and refilling the tank with new DEF fluid would solve the problems but it don't solve the problems

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gabto: I have read about other owners with those problems. The DEF/SCR systems are very complex. Too many sensors and

that is usually where the problems start. I suggest you look for an expeditors forum. They have lots of members with that

vehicle. Have you tried a high volume dealer?

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gabto: I have read about other owners with those problems. The DEF/SCR systems are very complex. Too many sensors and

that is usually where the problems start. I suggest you look for an expeditors forum. They have lots of members with that

vehicle. Have you tried a high volume dealer?

I take it to a local sprinter dealer nearest to me. none of em can figure out what's going on with it and they just keep throwing parts at it to try and solve the problems!! I am on the expediters forums and there's lots of good reads on people having the same issues as I am. it's already broke down 4 times so i'm gonna be filing a law suit since it is a lemon it should not be giving me all of these problems and no one can seem to fix it. it's not just the sprinters that are having these problems it's all of the new diesels that are having these problems!!

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ganto: Many of the Class 8 trucks have problems but not as bad as your Sprinter. This is what happens when a Gov. agency ( Carb and EPA) place unreasonable demands on the manufacturers. The pollution equipment will work one day. But it could take a few years.

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ganto,

 

Check the Facebook page called Roadtreking:the group. Do a FB search on "DEF problem task force". There is apparently a Mercedes task force working on the problem, and Jim Hammill the president of Roadtrek is leaning on them to resolve the issue.

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ganto: Many of the Class 8 trucks have problems but not as bad as your Sprinter. This is what happens when a Gov. agency ( Carb and EPA) place unreasonable demands on the manufacturers. The pollution equipment will work one day. But it could take a few years.

I agree with what you said. I heard the problems with the class 8 trucks I would not want the headaches of those!! I would boycott CA and buy a pre emissions truck and get better reliability and fuel economy!!! you figure the SCR engines have been out for 5 years and they still haven't worked out the kinks yet. and it also don't help with government agency shoving new emissions standards down manufactures throats also. now they have to scramble and try and fix the kinks and try to regain there reliability!!

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ganto,

 

Check the Facebook page called Roadtreking:the group. Do a FB search on "DEF problem task force". There is apparently a Mercedes task force working on the problem, and Jim Hammill the president of Roadtrek is leaning on them to resolve the issue.

thanks grace I reached out to em!!

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So I gather that no resolution is yet available?

nope there's no resolution yet. they say there working on one!!! not even the mechanics know what's going on with the scr engines

Edited by ganto

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I recently bought a 2015 MB Sprinter 2500 pass van with the intent of converting it to a class B rv. 1 week after purchase, low DEF warning. I bought DEF from AutoZone, they said it's approved for MB Sprinters. Topped off the tank (less than 1/2 gal) and drove off thinking message will clear after a few minutes. Instead, countdown started! Took it to MB dealer, told them what happened and asked if DEF I used was ok and they blessed it. They cleared CEL and countdown, billed me $266 then sent me off. The following day, low DEF and countdown pop up. Took it back, this time they said maybe bad sensors or Adblue system issues. Since van was still under warranty, no worries. They kept van for 3 days to wait for parts. After 3 days, they called, said van was fixed. All parts ok they just reset with new code from MB. Told me to top off DEF every 5000 mi. I top off every other fuel fill up. 1500 mi later, same thing. This time, I ended taking it to another dealer as I was about 100 mi from the previous one. First, they reset it, told me to use only MB DEF, dinged me $355.00. 50 miles later, low DEF and countdown again!!! New dealer ended up replacing catalytic converter and NOX sensors, under warranty. It's been 500 miles as of this writing and so far it's good (keeping my fingers crossed)! I found this on eBay 

MERCEDES cars & Sprinter BlueTec Adblue...

Item ID: 252485713121

Quantity: 1

Estimated delivery: Tue. Mar. 27 - Thu. Apr. 12

This is a Countdown Eraser that you plug into the OBDII receptacle. Will not erase low DEF warning but give you time to bring van to have error reset by dealer(?) I'll let you know if it's worth the money.

 

 

 

Edited by Jolet L
mispelled "of" should be "off"

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Your problem may be that you are filling the DEF too often which is confusing the sensors. I would try waiting the full 5000 miles and see what happens. I never filled mine between those miles. And any brand DEF will work. MB dealers have a $250 minimum shop charge so don't pay them to fill your DEF--I did--ONCE! 

Linda Sand

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On ‎3‎/‎19‎/‎2015 at 10:52 PM, Rich&Sylvia said:

The only time that they have problems with the DEF system on the Ford diesel is when the owners keep topping off the DEF tank instead of waiting for the DEF warning light ("800 miles remaining on DEF").

Could it be something like that? Are you filling the DEF tank before it indicates that it needs to be replenished?

Not true on my 2014 Ford. If I wait it takes awile for warning light to go away. Or is there some reset? Just reminded myself to fill it before upcomming 1800 mi. trip.

 

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On 3/12/2018 at 11:03 PM, sandsys said:

Your problem may be that you are filling the DEF too often which is confusing the sensors. I would try waiting the full 5000 miles and see what happens. I never filled mine between those miles. And any brand DEF will work. MB dealers have a $250 minimum shop charge so don't pay them to fill your DEF--I did--ONCE! 

Linda Sand

Not sure if you were addressing me with the above but I will try your suggestion. I refilled the DEF tank after 2000 miles since I got it from the dealer and it took a gallon of DEF. This is mostly city driving. And you're right, MB dealers will charge you as much as they can. BTW, the first dealer (MB of Melbourne FL) refunded me the full amount of what they charged me for resetting the CEL after I wrote an email and sent it to their GM. Thank you MB of Melbourne FL!

My Sprinter has been running trouble free and I hope it stays that way......knock on wood!

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