What could be more distressing than noises when you start your car… In fact, you probably already found out noises when you start your Mercedes Classe A and in general it’s frustrating. It could not be anything severe, but each new engine starts usually turns into a scary moment during which you don’t know if your engine will start. That is why our editorial staff has decided to write this document to support you find its origin. To do this, first, we will see the case of noise when starting on Mercedes Classe A but the car does not start, and finally, the noise you can feel on your car if it starts, first cold and then hot.
I listen a noise when I try to start my Mercedes Classe A, but the engine doesn’t start
I notice a clicking noise at the start of my Mercedes Classe A
If you listen a noise when you want to start your car, and it does not want to turn on, it is likely that it is the battery that is contributing to the issue. In fact, if you perceive clicking noise when you start your Mercedes Classe A, and it sounds like a ticking, you most likely lack the energy to run your starter, test out your battery with a voltmeter and swap it if necessary. In the event that after checking out your battery, you still know a noise when starting your Mercedes Classe A and it does not want to start, browse this article about starter motor noises on Mercedes Classe A for more details and to locate the origin of your issue.
I listen to a noise when I start my Mercedes Classe A but the engine it starts
I listen a noise when I start my Mercedes Classe A
- Grinding or squealing type noises when I start cold Mercedes Classe A :
If you listen a noise when you start your Mercedes Classe A, and this noise is like grinding or squealing noise, which can also be related to vibrations, it is possible that it is the combustion of your car that is involved. In fact if you have an air/fuel mixture that is not good the normal performance of the engine will be altered. Verify the condition of your injectors and air intake system. For more details on the origins of injection-related noises on Mercedes Classe A, read this content page. - Cold start friction parts Mercedes Classe A :
If you experience cold friction noises on Mercedes Classe A, it is practically sure that they come from one of your belts. Either the serpentine belt starts to wear out and therefore triggers a friction noise. It is also possible that the tensioner roller or damper pulley is worn out and that as a result the extension belt provoke a friction noise, often when cold. Visually check your belt and swap it if required. If you have other friction noises, and it doesn’t result from your serpentine belt, we have a full article on engine of your Mercedes Classe A.
I listen a noise when starting my Mercedes Classe A even when hot
- rubber mount / silent bloc dead motor
If you listen a clacking noise just as you start your car’s engine and it is more than 100,000 km long, it is possible that some of your engine silentblocks or rubber mounts are dead. And the huge vibrations produced by starting the engine can create starting noise on Mercedes Classe A. Verify their condition and swap them if required. Browse this article if you would like to have detailed details on rubber mount noises on Mercedes Classe A. - Motor flywheel
Finally, if you discern a noise that sounds a little like a crank noise when you start your Mercedes Classe A, even when hot, it is possible that if your series is equipped with a dual-mass flywheel, it is the origin of your problems. In fact, these parts have created a lot of problems on many cars. When they take part in the game they make noise when you start your Mercedes Classe A and when you turn off the engine. Have his condition checked by a professional.
