EML after AdBlue delete

[carlbcfc]

I have a W213, and I had the dreaded 500 Light pop up. I panicked, and posted in my local Taxi group where a guy said ‘I know a guy’.

So this local remapper came out, who to be fair, well recommended for various things. He deleted the adblue. The next day, I get an EML, and although the car is very driveable, it just feels 10% less powerful.

I told the guy, and he said I’ve got a new file that should work on your car. So he came out and done it again. Next day, EML again.

He tells me it must be your DPF, but I use DPF additives, and I spend my life on motorways in Sport+ mode mainly too.

I might of mine with a Vito drove into a local centre and they deleted his totally fine with no comeback.

What is this mapper doing different?

I must add, I did have a previous W213 with a dodgy Adblue delete that pulled up the same codes and issues. The car got written off before I could get to the bottom of it though.


I’m not here, to be judged, or to be told the laws, or to be told, “I told you so” thank you.

 

[DSK]

If the eml is on, what codes are showing? Members would need to understand before being able to help.


Sent from my iPhone using Tapatalk

 

[Blobcat]

Putting it back to a stock map with the latest software updates and NOX sensors works - a friend had multiple AdBlue errors and 500 mile warnings - had all the updates and NOX sensors and now 18 months of zero EML or AdBlue issues.

Yes, it has taken MB (and others) quite awhile to get the emissions systems working, but they can be pretty reliable now.

 

[onefortheroad]

Deleting just the ad blue can cause the dpf to stop self generating . You really need an up-to-date map file overwritten to the ECU.

 

[Steve@Avantgarde]

The clue is in what you have written about your mapper.

"Taxi group where a guy said ‘I know a guy’. "

"told the guy, and he said I’ve got a new file that should work on your car."

"What is this mapper doing different?"

The mapper does not know what he doing. He getting generic file maps from somewhere and just loading them to your ECU with no consideration of how the map files need to operate in tandem with your vehicle.

Also, you havent done any fault diagnosis as to why the fault has triggered your warning light. Even though you delete parameter for Adblue or increase their tolerence spec not to trigger, the PTCU, Engine ECU and SCR module still need to see certainly electrically correct signals.

I'm afraid you have caused all of your own problems here and this is another good advert for fixing the car properly and not trying to illegally cheat the system. I have come across this so many times and only as recently as last week. Trust me, trying to sort out EML and running issues on top of this sort of an abortion of a job creates more problems, causes garages more headaches and costs you more money in additional labour diagnosis time than just actually fixing the car properly the first time of asking.

 

[grayb]

Putting it back to a stock map with the latest software updates and NOX sensors works - a friend had multiple AdBlue errors and 500 mile warnings - had all the updates and NOX sensors and now 18 months of zero EML or AdBlue issues.

Yes, it has taken MB (and others) quite awhile to get the emissions systems working, but they can be pretty reliable now.

Interesting! So, the NOX sensors were replaced? I presume that is cheaper than the £2K often talked about for new tanks and pumps? Or are these different problems...?

 

[DSK]

I will be corrected but iirc, the nox sensors went through a few iterations. If correct, it’s the version 3 and latest software needed.

Nice to know though as if I have issue, this is what I will do, unless a 2013, 1 owner, low miles, ott serviced s65 comes onto the market.


Sent from my iPhone using Tapatalk

 

[Blobcat]

Interesting! So, the NOX sensors were replaced? I presume that is cheaper than the £2K often talked about for new tanks and pumps? Or are these different problems...?

They were, at Mercedes cost (thankfully) as it was a relatively recent purchase and still within the 3 yrs warranty

 

[ajlsl600]

I have a W213, and I had the dreaded 500 Light pop up. I panicked, and posted in my local Taxi group where a guy said ‘I know a guy’.

So this local remapper came out, who to be fair, well recommended for various things. He deleted the adblue. The next day, I get an EML, and although the car is very driveable, it just feels 10% less powerful.

I told the guy, and he said I’ve got a new file that should work on your car. So he came out and done it again. Next day, EML again.

He tells me it must be your DPF, but I use DPF additives, and I spend my life on motorways in Sport+ mode mainly too.

I might of mine with a Vito drove into a local centre and they deleted his totally fine with no comeback.

What is this mapper doing different?

I must add, I did have a previous W213 with a dodgy Adblue delete that pulled up the same codes and issues. The car got written off before I could get to the bottom of it though.


I’m not here, to be judged, or to be told the laws, or to be told, “I told you so” thank you.

Did u unplug adblue harness, I had delete guy didn't tell me to unplug so eml came on. Unplugged not seen since.

 

[mioba]

Bypassing a fault leading to another fault is nothing but a sham job which in the end coats more time, patience and stress that doing it once right

 

[onefortheroad]

Did u unplug adblue harness, I had delete guy didn't tell me to unplug so eml came on. Unplugged not seen since.

Some map files out now, require the harness to be plugged in. Some do some don't.

 

[carlbcfc]

If the eml is on, what codes are showing? Members would need to understand before being able to help.


Sent from my iPhone using Tapatalk

 

[carlbcfc]

I will be corrected but iirc, the nox sensors went through a few iterations. If correct, it’s the version 3 and latest software needed.

Nice to know though as if I have issue, this is what I will do, unless a 2013, 1 owner, low miles, ott serviced s65 comes onto the market.


Sent from my iPhone using Tapatalk

Any idea how I can find OEM part number for Nox sensors?

Another question is if it goes into Merc and they update it, will that wipe the adblue delete?


He messed around at back so assume harness our. Maybe I should plug it back in?

 

[DSK]

IIRC @Botus wrote something about these but I’d be damned I if I can find details. Fellow members and garage owners may know and advise.


Sent from my iPhone using Tapatalk

 

[carlbcfc]

Bypassing a fault leading to another fault is nothing but a sham job which in the end coats more time, patience and stress that doing it once right

Panicked mate. Had loads of work on and was offered a fix. Obviously now I am wiser.


A mate took his Vito to a drive in place recently and no EML since.

 

[onefortheroad]

Panicked mate. Had loads of work on and was offered a fix. Obviously now I am wiser.


A mate took his Vito to a drive in place recently and no EML since.

McDonald's??

 

[ajlsl600]

Some map files out now, require the harness to be plugged in. Some do some don't.

After delete all good for 2 months then eml back but no code.
Unplugged harness eml gone since.
Delete is answer to adblue. Until a factory free fix is avail. As in states.
Another 1200 after 3 Yr for same issue sure ain't..

 

[carlbcfc]

If I get this guy to put it back to stock will it return the 500 mile timer? And will my machine show me the real fault or will that be a riddle itself?

 

[ajlsl600]

You must speak to the guy, and understand where u stand if it all goes to sh1t. My guy says he has my origional set up flash saved, not keen on testing that theory. One day I will do more research on that. Cud be a can of worms and possible money pit? Wud be interested in any comment from adblue delete, reinstate stories

 

[w213probs]

i was reading somewhere that the 500mile thing can be reset by removing some fuse. not remember exactly but if anyone knows, that might help you.