Mercedes Ml250

[OWS1]

Hi All, all a bit new to this ,I'm after a little advice .I own a Ml250 2013 sport ,we were on the motorway a couple of days ago* the add blue warning came on, within 40 mins we pulled off and filled the tank.however I still have a message on the dash telling me the car won't start in 370 miles .so I did a Google search on it, which told me to do the 1 click on the key and press the gas pedal down .tried this several times, but with no joy ,not sure if it's a coincidence but the engine management light is also on to !! Any advice would be greatfully received..

 

[Blobcat]

Hello and welcome,

I fear you’re now in the world of emissions equipment pain. The EML comes on in yellow due to AdBlue fault. It could also be the Nox sensors as they fail if you’ve had the software update…
AdBlue dosing pumps fail due in part to lack of use and the AdBlue crystallising up. The software update means more AdBlue us used which can exacerbate the problem.
Mercedes answer is usually to replace the dosing pump, this can be an integral part of the tank so they replace it as one expensive unit.
Some owners have been able to clean the AdBlue system fixing the problem. Please have a search on the forum, there are many threads unfortunately…

 

[mioba]

In summary - WHS above.

Welcome to the forum, I hope you get it sorted soon.