E220d Adblue Pump Malfunction Message - After 2 new pump part replacements

[Jay S]

So, I have an AdBlue malfunction message appear, along with the EML and a count-down (miles). Went to my Merc garage - Who ran the diagnostics (with Merc software), which returned an 'AdBlue Pump malfunction' (Change pump).

So, they ordered the new pump part and fitted into the car. Ran the diagnostics again and the same Error message appeared.

They thought it might have been a faulty Part so, ordered another new one - Fitted the new part again, and yet the same message appears - even though the new pump is fitted on the car.

Any thoughts on why this might be the case? ----- Is it because the car still recognizes the new pump part as the old one??

Thanks

 

[ajlsl600]

Maybe? New pump requires coding in and or the dreaded update. To make it shake hands with the "brain"?
Other than that, possibly wiring issue, short ect that's produced the origional error and continues with the 2 replacements as issue unresolved?

 

[malcolm E53 AMG]

I didn’t realise it was possible to just replace the pump my impression was that the pump and urea tank came as an assembly. Progress if you can just replace the pump but you may need a software update to register it to the car

 

[onefortheroad]

And a Merc garage is doing this ??

 

[Jay S]

Maybe? New pump requires coding in and or the dreaded update. To make it shake hands with the "brain"?
Other than that, possibly wiring issue, short ect that's produced the origional error and continues with the 2 replacements as issue unresolved?

Wiring issues are ruled out as they re-fitted them after the new pump failed twice.........

In regard to the coding, I've spoken to some - who believe that the pump needs some SCN coding done on it - so it relays the correct message back to the cars ECU, to say that this new part is updated and measuring correct...... i hope that this is the case, although, as with many AdBlue issues on these cars it's a long road!

 

[Jay S]

I didn’t realise it was possible to just replace the pump my impression was that the pump and urea tank came as an assembly. Progress if you can just replace the pump but you may need a software update to register it to the car

Yeah, you can just remove the pump for the main transfer box. I think the software update may be the case here...... I'm just surprised that the guys trying to Fix the issue didn't recognize it or think to update the part

 

[Jay S]

And a Merc garage is doing this ??

Mercedes Specialists garage - Not Merc Main dealer

 

[NJS5]

Whereabouts are you? Maybe we can recommend a better Indy?

NJSS

 

[DSK]

I have to say aside from the adblue woes, it seems to be a faff for this indy, considering the ones we know can usually get these things tested and resolved methodically and efficiently.


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[ajlsl600]

Adblue. Poorly thought out permit to screw customers over. I try toDo correct but if it comes a grand for 2nd time before I sell I am afraid its delete.

 

[Steve@Avantgarde]

Replaced a few control units too. Shouldnt be too hard to diagnose.

 

[Jay S]

Just been to a Merc Specialist - Who updated the car's software to the latest update. Then made sure that the Engine, transmission & AdBlue Modules were also up to date to the latest software through SCN coding.

They then ran the diagnostics on the car, with the new Ad-blue pump fitted, and the same AdBlue pump malfunction error appeared!! - the remedy? = Change the ad-blue pump. So back to square 1!

Got the car booked in with Merc - Main dealer, soon. Very curious to see what they come up with, besides a heavy bill.

I don't see how they can't come to the same conclusion, given the garage I used, use the same diagnostic software and Original Merc Parts......

 

[Jay S]

Replaced a few control units too. Shouldnt be too hard to diagnose.

Just been to a Merc Specialist - Who updated the car's software to the latest update. Then made sure that the Engine, transmission & AdBlue Modules were also up to date to the latest software through SCN coding.

They then ran the diagnostics on the car, with the new Ad-blue pump fitted, and the same AdBlue pump malfunction error appeared!! - the remedy? = Change the ad-blue pump. So back to square 1!

Got the car booked in with Merc - Main dealer, soon. Very curious to see what they come up with, besides a heavy bill.

I don't see how they can't come to the same conclusion, given the garage I used, use the same diagnostic software and Original Merc Parts......

 

[bladecrazy]

good luck, one things for certain it wont be cheap!

 

[Steve@Avantgarde]

If its got a new pump it cant be that so I would say either a wiring issue or the ECU is goosed.

 

[oleks1992]

More than likely wiring issue....

 

[Jay S]

UPDATE: Ad-blue metering pump malfunction -

So went to Merc - who ran a diagnostic £174 - to tell me the same problem my garage told me, 'The AdBlue metering pump needs replacing' - initially i was told that the part is unavailable in the UK and Germany and they cannot carry out works until the new-year- which is not what you want to hear when you have a countdown (60miles) before engine will not start.

I don't see how the part could be unavailable throughout the whole country - when just 2 weeks ago my garage ordered 2 brand new pumps. I told them this - they said they would double check - Turns out they had one at another dealership....Suprise!!

So they are going to do the work now with the pump - However i have a feeling that they are going to come to the same conclusion as my garage did.... Where the fault, along with the adblue countdown will remain...

Oh btw, its not a wiring issue they concluded - just the pump that was returning a fault

will keep posted!

 

[ajlsl600]

Prob bad batch pumps and dtf kicked in whilst part on shelf.!!! . I will be real interested to know final solution op must be getting real pssd off cud back pressure in lines thru cystalization be triggering a pump related fault op says not wiring, how many replacement pumps can be faulty.?

 

[mioba]

Prob bad batch pumps and dtf kicked in whilst part on shelf.!!! . I will be real interested to know final solution op must be getting real pssd off cud back pressure in lines thru cystalization be triggering a pump related fault op says not wiring, how many replacement pumps can be faulty.?

Three I say.....

 

[ajlsl600]

If the case wot that say for modern bez QC. I would want all my labour and aggro from benz.