lol addblu

[DEAD-BROKE]

so i finally get around to doing the 60k service on my 13 sel tdi and when i go to fill up the adblue it's only down about a 1/4 inch below the filler cap, so that means in 11505 miles i used about 2 teaspoons of add blu.
yes i am the only driver and i'm the only one that has access to my car and i keep the safety lock on the trunk because i store my gun there (only when i have to )
car runs perfect mid 40's mpg, no codes, just a normal driving tdi that has used zero adblue in 11505 miles.
should i be worried or should i even care.
oh one thing i have noticed when in sport mode (S) if i apply ever so slight pressure on the gear selector i can make the backup camera come on,,,D'oh

 

[unixb0y]

pre fix or post fix?

 

[251]

Something does not sound right here. When I add more DEF at my 10K oil changes it takes a full 2.5 gallon container. However the last time I added DEF it only took about 2.25 gallons - could not get that last bit in as it was filled to the brim. It should use much more than two teaspoons of DEF fluid over 10K miles. And before you ask - mine has not had the fix done yet FWIW.

 

[oilhammer]

Something is wrong, do not know why it has not set some sort of reductant dosing fault though.

 

[DEAD-BROKE]

pre fix or post fix?

no fix and don't plan on having it done, no inspections in Florida.

 

[unixb0y]

not even a fix, dpf delete +tune and pocket some $?

 

[Rico567]

So- the conclusion I must draw to the OP is that the SCR system isn't working. Apart from being curious (a la "oilhammer") as to why it's not throwing some kind of code, my reaction is to just ignore it and drive on....unless there are any negative consequences to the emissions system from the system being down. Our '13 Passat uses what appears to be a nominal amount of DEF (2.5 gal. per 10K miles). We have no fix, nor is any planned.

 

[DEAD-BROKE]

So- the conclusion I must draw to the OP is that the SCR system isn't working. Apart from being curious (a la "oilhammer") as to why it's not throwing some kind of code, my reaction is to just ignore it and drive on....unless there are any negative consequences to the emissions system from the system being down. Our '13 Passat uses what appears to be a nominal amount of DEF (2.5 gal. per 10K miles). We have no fix, nor is any planned.

i went back in my records and i added just under 3 gallons when i did the 50K service.
car runs perfect so i'll continue to drive it.

 

[madmax951]

I kept my 2014 Passat TDI SEL because Diesels are exempt here in Texas. How many times can you buy a new car and 3 years later they give you almost $10,000 back! I love the car too, I tried to find something in the 35K range and there is nothing out there that compares to the VW Turbo Diesel with DSG transmission combo. So in the end I bought my VW Passat for $24,000 a fully loaded SEL!

WOW!

Matt M

 

[Jetta_Pilot]

I'm sure there other more knowledgeable people, but could it be possible that the DEF has crystallized and caused a blockage, therefore no DEF being used?

 

[whitedog]

I'm sure there other more knowledgeable people, but could it be possible that the DEF has crystallized and caused a blockage, therefore no DEF being used?

Possible, but it should throw a code since the system would see nothing happening when it doses. More likely is that the blockage is in the top and somehow it is keeping that liquid bit in the filler neck.

DEAD BROKE, are you able to look at the DEF level with VCDS? You may be just about empty, but at some point it would tell you that you are getting low. Unless the level sender is stuck somehow.

I know it sounds ludicrous, but it's what came to mind as I was typing.

Curiouser and curiouser..

 

[DEAD-BROKE]

Possible, but it should throw a code since the system would see nothing happening when it doses. More likely is that the blockage is in the top and somehow it is keeping that liquid bit in the filler neck.

DEAD BROKE, are you able to look at the DEF level with VCDS? You may be just about empty, but at some point it would tell you that you are getting low. Unless the level sender is stuck somehow.

I know it sounds ludicrous, but it's what came to mind as I was typing.

Curiouser and curiouser..

no vcds so no way of telling. honestly i'm not going to worry about it.
i'll just continue to drive it and see what happens.
.
.
i do have to start another thread with questions about the DSG.

 

[oilhammer]

The ECU monitors NOx reduction across the deNOx catalyst via NOx sensor values pre and post. So if the NOx reduction is not taking place, it should know. And DEF works pretty good to reduce NOx if you watch those sensor values.

I have no idea why the ECU has not flagged some sort of DTC, unless it already has, and has not yet sent an MIL request. But that request usually comes pretty quickly, as something like this I would imagine is a two-trip detection logic.

 

[251]

not even a fix, dpf delete + tune and pocket some $?

The OP has stated no plans to do the fix so they won't be able to "pocket some $" if you meant getting buyback / fix reimbursement money?

 

[Funguy]

Was the OP at the dealership for any reason? My dealership tops off DEF every time I go there. That's great but I have 5 gallons of ad-blue getting old in the basement. My last free service today though so I will get to use it soon.

 

[767wrench]

Was the car bought used? Could it have a delete tune installed but be retaining all the emissions hardware? Perhaps to pass it off as a functional system? This would explain no usage and no MIL lamp.

 

[740GLE]

Side note, our stage 1 fix '15 Passat is creeping up to 8K, no low adblue warning yet.

 

[Jetta_Pilot]

Side note, our stage 1 fix '15 Passat is creeping up to 8K, no low adblue warning yet.

Don't want to nitpick, but the Stage 1 name is usually referred to with a ECU tune.
PHASE 1 is the software fix for VW's.
Phase 2 will be extensive exhaust work in 2018.

 

[DEAD-BROKE]

Was the car bought used? Could it have a delete tune installed but be retaining all the emissions hardware? Perhaps to pass it off as a functional system? This would explain no usage and no MIL lamp.

car IS UNMOLESTED.

 

[Funguy]

I went 11k with no ad blue warning. Dealership changed the oil and topped of the DEF so I don't know how far down it was

 

[740GLE]

Don't want to nitpick, but the Stage 1 name is usually referred to with a ECU tune.
PHASE 1 is the software fix for VW's.
Phase 2 will be extensive exhaust work in 2018.

valid point, phase 1 fix performed and still low DEF consumption .

 

[Tom in PT]

On my ‘13 passat, in 22,000 miles pre-Fix I also consumed virtually no DEF fluid. Never had a code or CEL as a result.

 

[Jetta_Pilot]

As for DEF consumption I will soon know better after I finish my annual 3,000 mile one way trip south. I'll fill before I leave and again once I am at my destination. Then I'll be able to compare to last years pre-Phase 1 fix usage.

I use pretty well the same route every year. Same hills etc.