What could be more distressing than noises when you start your vehicle… In fact, you maybe already came across noises when you start your Mercedes A class and in most cases it’s frustrating. It might 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 made the decision to produce this document to help you find its source. To do this, first, we will see the case of noise when starting on Mercedes A class but the vehicle does not start, and finally, the noise you can encounter on your vehicle if it starts, first cold and then hot.
I listen to a noise when I try to start my Mercedes A class, but the engine doesn’t start
I perceive a clicking noise at the start of my Mercedes A class
If you listen to a noise when you want to start your vehicle, and it does not want to turn on, it is most likely that it is the battery that is causing the issue. In fact, if you notice clicking noise when you start your Mercedes A class, and it sounds like a ticking, you most likely lack the energy to run your starter, check your battery with a voltmeter and change it if necessary. In the case that after looking at your battery, you still experience a noise when starting your Mercedes A class and it does not want to start, browse this article content about starter motor noises on Mercedes A class for more information and to locate the source of your issue.
I acknowledge a noise when I start my Mercedes A class but the engine it starts
I listen to a noise when I start my Mercedes A class
- Grinding or squealing type noises when I start cold Mercedes A class :
If you listen to a noise when you start your Mercedes A class, and this noise is like grinding or squealing noise, which can also be relating to vibrations, it is conceivable that it is the combustion of your vehicle 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. Check the condition of your injectors and air intake system. For more information on the origin of injection-related noises on Mercedes A class, look at this article. - Cold start friction parts Mercedes A class :
If you know cold friction noises on Mercedes A class, it is pretty much 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 conceivable that the tensioner roller or damper pulley is worn out and that as a result the extension belt causes a friction noise, often when cold. Visually check your belt and change it if needed. If you have other friction noises, and it doesn’t result from your serpentine belt, we have a full article content on engine of your Mercedes A class.
I listen to a noise when starting my Mercedes A class even when hot
- rubber mount / silent bloc dead motor
If you listen to a clacking noise just as you start your car’s engine and it is more than 100,000 km long, it is conceivable that some of your engine silentblocks or rubber mounts are good to be swapped. And the huge vibrations produced by starting the engine can generate starting noise on Mercedes A class. Check their condition and change them if needed. Read this article content if you would like to have detailed information on rubber mount noises on Mercedes A class. - Motor flywheel
Finally, if you experience a noise that sounds a little like a crank noise when you start your Mercedes A class, even when hot, it is conceivable that if your series is equipped with a dual-mass flywheel, it is the source of your problems. In fact, these parts have created a lot of problems on many cars. When they take part in the game they generate noise when you start your Mercedes A class and when you turn off the engine. Have his condition examined by a professional.
