I would appreciate any guidance on Nox Sensors.

[WanderlustGuru]

The check engine light illuminated, and my code reader indicated a malfunction with the Nox sensor. Considering that this is the fourth occurrence of such failures, I decided to have them rectified by paying for their deletion. All of these items were acquired and installed by Mercedes.

I brought it to a Mercedes expert for repairs. I decided to fix it one last time before deleting them. A diagnostic was performed and the garage has ordered a Nox sensor to address the issue.

Two days later, the engine light illuminated again, indicating the same problem as before, along with an extra error related to the Nox system. I returned the item for inspection and the garage informed me that the Nox sensor component is the latest version and they have discontinued production of the previous version. As per the garage's assessment, this indicates that the other Nox sensor is not establishing communication with the previous one, necessitating its replacement.

The garage suggests that replacing the current Nox sensor with an updated version would resolve the issue and ensure correct functionality.

This implies an increase in financial resources.

I am uncertain on the course of action to take.

Should I pursue a complete reimbursement for the maximum possible amount and have the undesirable content removed, or should I choose to pay an exorbitant sum to resolve the issue? I am concerned that these solutions may also be ineffective and thereafter attribute the issue on the ECU's lack of up-to-date status.

I am quite frustrated with these Nox sensors.

In addition to the extensive list of expenses, I have incurred a fine for driving inside a ULEZ zone despite my automobile being compliant with Euro 6 emissions standards.

I own a 2014 E350 Bluetec coupe and I have not yet received the emissions update for my vehicle.

I would appreciate if someone could provide me with guidance about this matter. What is the current status of my situation with the garage?

We would highly value and be grateful for the time and effort you dedicate to assisting us.

[BENZE220AMG]

I would choose the most apparent option for a vehicle that is 10 years old. If you had allowed me to do the software upgrade and your nox sensors failed as a result of the modification, they would be responsible for covering the expenses or at least providing assistance. There is a young man in my vicinity who offers a service to remove nox and ad blue for a fee of £200. Additionally, he adds a stage one remap in the package at no extra cost.

[Starcar2022]

Dispose of and get a gasoline-powered whip.

[WanderlustGuru]

A 100% discount is available for the purchase of an S63 coupe. A duration of 2-3 years with the existing one. I still have affection for my E350, but I am becoming weary of these Nox sensors.

[WanderlustGuru]

I want to retain my automobile for a further 3 years before upgrading to a petrol vehicle.

I have already sent a payment of £700 to the garage, although the issue remains unresolved. Having to spend an additional £700 to address the first problem is not what I had anticipated. I sought the services of a mercenary expert just to avoid the installation of the software update.

The garage first said that the issue would be resolved on the first attempt, but now they have stated that it will be resolved on the following attempt. I remain unconvinced and anticipate that the issue will resurface, necessitating an ECU upgrade to rectify the functionality of the Nox sensors.

What is the likelihood of me receiving a refund? I have already paid £700.

Remapping the cars is the only viable solution since it is a prevalent issue with Adblue vehicles. 😞

[WanderlustGuru]

I want to retain my automobile for a further 3 years before upgrading to a petrol-powered vehicle.

I have already remitted £700 to the garage, nevertheless the issue remains unresolved. Having to spend an additional £700 to address the first problem is not what I had anticipated. I sought the expertise of a specialist in Mercedes-Benz vehicles just to avoid the installation of the software update.

The garage first promised to resolve the issue on the first attempt, but now they have said that it will be resolved on the following attempt. I remain unconvinced and anticipate that the issue will resurface, necessitating an ECU upgrade to rectify the functionality of the Nox sensors.

What is the likelihood of me receiving a refund? I have already paid £700.

Remapping the automobiles is the only viable solution since it is a prevalent issue with Adblue vehicles.

[BENZE220AMG]

As far as I understand, it is advisable to replace nox sensors in pairs. This is due to the fact that if one sensor malfunctions, it is quite likely that the second one will also fail soon. It seems that they have progressed to version 4 or 5, and the programme has been modified to align with the settings and ad blue consumption. MB and MB professionals has expertise in the latest software and related areas.

[johnmayerrr]

Can you confirm that this vehicle is exempt from the Ultra Low Emission Zone (ULEZ)?

Are 2014 MB diesel vehicles classified as Euro 5 rather than Euro 6?

[WanderlustGuru]

Indeed, I am certain. The issue is to Mercedes' lack of the accurate V5C document indicating that the automobile meets Euro 5 emissions standards. A V5C Corrections Documentation is required and a payment of £30 is necessary. Upon receiving the new documentation letter, I possess the capability to revise the ULEZ database.
 

[WanderlustGuru]

It is uncommon to replace sensors in pairs, as you said. If I had been aware of that information before to the repair, I would not have proceeded with the task.

Contrary to what I was informed, the issue was not resolved on the first attempt. Consequently, I am now required to bear the cost of replacing a fully functional sensor in order to rectify the problem. Therefore, I am required to make an additional payment to rectify the previous repair that I have already paid for.

Additionally, if this course of action proves unsuccessful, it is quite likely that I will be compelled to undergo an emission upgrade, since I am uncertain if this will effectively resolve the issue.

Subsequently, I shall be compelled to beseech that they endure.

[Needsnewtyres2]

The diagnostic test indicates the quantity of replacements required. If it is diagnosed with the appropriate MB equipment. Typically, only one occurs at a time.

[WanderlustGuru]

I shared the same notion.

The garage has informed me that they are replacing the Nox sensor with a newer one that has a slightly different number. Unfortunately, an identical replacement is not available since these sensors are no longer being made. It seems that there is a faulty component.

The only solution to address the second issue, which involves the lack of communication between the Nox sensors, is to replace the other Nox sensor. This entails additional expenditure and the replacement of a functional component.

I no longer have faith that this second fix will cure the problem.

[BENZE220AMG]

Sequentially, yet both in their appropriate order 😄

[johnmayerrr]

Is your car compliant with Euro 6 regulations and has it been classified as Euro 5?