Facing repeated noises on your car tends to be distressing, a car is so sophisticated that it is generally hard to track down its source and even more complicated to find the component that triggers it. In case you too have already experienced a cold engine noise on your Mercedes Classe S, we can clearly help you. In reality, we chose to publish this content page in order to analyze the main triggers of an engine that rattles when cold on your Mercedes Classe S. First we will look at engines that is rattling only when starting, then because of unsuitable oil and finally because of glow plugs.


The engine of my Mercedes Classe S is rattling only when starting

If the engine of your Mercedes Classe S makes a cold rattles, especially when starting and which disappear before long afterwards, it is possible that your engine lubrication is to blame. In reality, the oil strainer (the component that sucks up the oil and makes it rise to the top of the engine) can be broken and therefore take some time to make the oil rise when it is still very thick. If this is your situation, after a few tens of seconds the engine that slams your Mercedes Classe S should go back to normal functions because the lubrication of the engine will be done naturally, remember to examine the condition of the engine.

Engine of my Mercedes Classe S that rattles when cold because of too fluid oil

Another situation which can explain an engine which cold rattling on your Mercedes Classe S is that during an oil change the selection of oil was not best, in fact, engine oils differ on their viscosity, which we will compare with the “W” value, the higher this value is the thicker the oil will be and vice versa. If a too fluid oil has been picked, it is possible that when cold, the lubrication it allows is not adequate to limit engine slamming, compare the oil used and the oil suggested by the manufacturer, if your engine clicking is strong or if it persists on your Mercedes Classe S, do not be reluctant to replace it with the right oil.

Engine that rattles when cold on my Mercedes Classe S cause of the glow plugs

If you have a diesel engine, your engine is rattling when cold, and it has difficulty starting when it is cold, it may be your Mercedes Classe S glow plugs that are defectives. In reality, a dead spark plug will trigger the connected cylinder not to heat up and will provoke a stronger rattles on an engine Mercedes Classe S, so think about evaluating the state of your spark plugs individually using a multimeter, it may be that only one is involved like all of them. Here, we have revealed to you, the main causes of an engine that cold slam on a car, do not be reluctant to have a look at our page dedicated to your car to find additional details on all the breakdowns associated with your motor vehicle.

Whenever you have any additional questions about the Mercedes Classe S, do not hesitate to consult our Mercedes Classe S category.