Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome! I'm Billy and I will assist you with your inquiry. I understand that having car problems can be frustrating so please feel free to ask if any further info is needed. If you get prompted for a premium service or a phone call, please ignore that, cause I don't think it is needed at this point. My apologies for the delay, thank you for your patience. May I know your first name?
Having replaced the NOx sensor, the new sensor needs to be initialized using diagnostic equipment. The engine control unit needs to have the software updated. Having done all those, and if you still get the warning light, the system will need to be checked for faults using diagnostic equipment. The faults will indicate the problem. It most commonly is the dosing injector on this model. But those procedures need to be performed. I will get you the details in pdf.
Yes, it's van or a minibus. Here are the details which you can check out and relay to the garage working on it.
Yes. When connected to the computer, it needs to be checked for faults. The software will need to be updated, and the NOx sensor will need to be initialized.
If they only reset the faults, the problem, being still present, will resurface.
Check the faults, and proceed accordingly.
If the faults indicate a level problem, with the Adblue, the system will need to be drained and filled according to a very specific procedure. I will get the procedure.
Here are the details.
Then you need to proceed according to the faults found in the system.
When the fault is triggered, the system performance will be reduced gradually. Eventually the engine will not be allowed to start. The injector can very well be the cause. But you need to proceed according to the faults as indicated, to avoid replacing unneeded parts.
Thank you for your trust. Cheers.