JustCarsForum - Your Ultimate Automotive Community

Greetings, I am the owner of a 2018 Mercedes-Benz E-Class E350.

On Monday, after the completion of a 1500-mile journey at high speeds on European motorways, the engine light in my vehicle illuminated and subsequently entered a state of reduced performance often referred to as "limp mode."

I brought the vehicle to a Mercedes dealership due to the presence of an extended warranty. The dealership has said that the vehicle necessitates a diesel particulate filter regeneration process. I am somewhat displeased that the particular problem that has arisen is not included under the warranty coverage, especially considering that I have been making payments for this warranty for a duration of two years. Despite this, I intend to terminate the warranty nevertheless.

A similar occurrence took place in the months of February and March, during which my buddy successfully addressed the concerns related to regeneration.

Certainly, it is arguable that this recurring event should not be taking place on a biannual basis.

Is there anything of which I should be made aware?

I also received advice from a family member to do a thorough cleaning of the diesel particulate filter (DPF), including its removal and subsequent cleaning using a specialized equipment. He accomplished the task with his Range Rover Sport vehicle.

I express my gratitude for your assistance.

Do you sometimes use it for extended journeys?

I would advise against canceling your Mercedes Extended Warranty and instead recommend thoroughly reviewing the coverage details to ascertain what is included and excluded.

The extended warranty may be classified as a financial product. In the event of uncertainty about the coverage, it is advisable to reach out to the insurance provider for clarification.Alternatively, the user may choose to contact another authorized Mercedes dealer in order to make an inquiry.

I have seen that Mercedes dealerships exhibit either exceptional or unsatisfactory performance, with no intermediate evaluations.

Infrequently.
The vehicle's mileage currently stands at 70,000 kilometers.

That is the response provided.

The warranty does not provide coverage for the issue in question due to its classification as self-inflicted. Ideally, a minimal need for optimal performance would be a regular highway run lasting around 1-2 hours every two weeks.

It is advisable for the vehicle to periodically engage in self-regeneration, regardless of whether it is on a freeway travel or not, provided that it fulfills certain conditions such as having sufficient fuel and reaching the optimal operating temperature. The frequency at which my car undergoes regeneration occurs approximately every 500 miles. However, this interval can decrease to 160 miles when the car is primarily used for short journeys, prompting the need for a replacement with a petrol car. Additionally, if the engine is frequently turned off before the required 10-minute duration for regeneration is completed, the car will attempt regeneration again during the next instance of the engine reaching the necessary temperature. There was no need to visit the dealer in order to compel a vehicle to function properly, despite the fact that it had covered around 170,000 miles. This suggests a little discrepancy in the situation.

Consider making an investment in an iCarsoft diagnostic tool, which would enable you to do the necessary troubleshooting and repairs independently.

Additionally, it is worth considering the dismantling and cleaning of the Diesel Particulate Filter (DPF).

Consider making an investment in an iCarsoft diagnostic tool, which would enable you to do the necessary troubleshooting and repairs independently.

Additionally, it is worth considering the dismantling and cleaning of the Diesel Particulate Filter (DPF).

In this context, the user's initial statement lacks specificity and academic tone. In addition to this extended journey. Two months previous to that, I embarked on another extended journey to France. Therefore, I believe that there are underlying factors beyond the mere need for a diesel particulate filter regeneration.

I will engage in a conversation with the Mercedes mechanic tomorrow in order to provide him with an explanation.

There might perhaps be a hindrance preventing the vehicle from undergoing a regeneration process. There are two potential causes for the issue at hand: a failure in the sensor or excessive clogging of the diesel particulate filter (DPF), hindering the regeneration process. A professional with expertise in the STAR system will possess the capability to interpret the error codes and provide further guidance.