What causes Mercedes limp home mode?

One common cause of Mercedes limp mode is when the mass airflow sensor (MAS) malfunctions and fails to send info about the fuel injection engine to the Engine Control Unit (ECU).

What happens when a Mercedes engine misfire occurs?

As soon as an engine misfire occurs on a Mercedes-Benz, you will notice poor engine performance and strange vibrations that in some cases can be felt even in the driver cabin. The first thing that comes to mind when you get an engine misfire is: “This is going to be expensive.” Take a deep breath because in most cases it doesn’t have to be.

What happens when Mercedes diesel engine is not running?

As Mercedes DPF traps and holds soot, with time it reaches a point when it needs to be ‘emptied out’. This is done by regeneration. During this automated process, engine computer rises exhaust gasses temperature over 630°C. This burns up soot particles. However, if the engine is not running correctly automatic regeneration will not be started.

How does the Mercedes 3.0l diesel engine work?

To meet more and more strict emission regulations, there are two oxidizing catalytic converters cleaning the exhaust gases of the new Mercedes 3.0L V6 diesel engine. In addition, the engine has a cooled exhaust gas recirculation system (EGR/AGR) and uses a diesel particulate filter (DPF) to lower exhaust emissions even further.

Are there any problems with the Mercedes OM642 engine?

In general, the OM642 engine has proven to be quite reliable. But near a mileage of 100-150k miles, auxiliary engine systems start to fail. The first thing that starts to fail on this engine is the crankcase ventilation system.

What are the problems with the 3.0 Mercedes Benz V6?

We are looking at a used 08 Itasca Navion with a little over 60,000 miles on the diesel. What are the problems with the higher mile 3.0 V6’s if any? Should we be concerned with buying that unit? Posted By: carringb on 01/10/16 11:16am that is the first year with the DPF system. It was hardly trouble free.