You listen a starter motor noise on your BMW 3 Series every time you start your car. We can understand that this is not agreeable and that you have inquiries. Listening such a sound is not always a good signal, but it may also be nothing serious. To assist you remedy this problem, our team has decided to create this content page to support you in this research. First, we will describe how the starter motor works on your BMW 3 Series, and then what starter motor noises you can experience on your BMW 3 Series.starter-motor-noise-bmw-3-series

Functioning and various information

Function of a starter motor on BMW 3 Series

The starter motor is an electric motor whose single job is to start the engine motor of your automobile. By a magnetic system and a “serial” technology, it will generate an enormous torque that will allow it to drive the pistons of the engine that are exposed to enormous compression and an oil that provides additional resistance being not very fluid when cold.
It is completed by the “solenoid”. It is an electromagnet that goes under a 12 volt electric impulse to push the fork (link part between the “solenoid” and the electric motor of the starter) and thus engage the starter drive pinion on the engine flywheel. Following this action, once in engagement, the starter motor of your BMW 3 Series is activated and turns the drive pinion on the flywheel to start the engine.

How to prevent starter motor noises on BMW 3 Series

  • Do not try to start your engine for too long
  • Even if your engine does not start because of tired glow plugs, for example, or because the temperature is too cold. You should not try to start for more than a few seconds or you will burn it. Indeed, the current necessary to make it turn and the speed of rotation only permits it to perform its function over very short and intense periods of time. If the car does not start, look for the solution somewhere else.

  • Do not use a starter motor on BMW 3 Series with a tired battery
  • Although when you have a battery that is exhausted, you always want to start your automobile, the energy it is capable of holding may not be enough to provide the power needed by the starter motor to start your engine motor. Repeated attempts will pre-use your starter motor and if you do not treat the origin of your failure to start repeatedly, your starter may be the future part you will have to replace.

I listen noises from the starter motor of my BMW 3 Series, what are the triggers?

I experience a loud noise from the starter of my BMW 3 Series

If you perceive a starter motor noise on BMW 3 Series and you have the feeling that it is close to a loud noise, it is possible that it is the starter motor gears that are at the origin of it. Indeed, often when the part has been dismantled for other maintenance, its adjustment in relation to the engine flywheel may no longer be optimal, in which situation the gears will be worn down after some time and will not slip and will no longer properly engage the engine when starting. Check the state of the drive pinion, if it is responsible of the starter motor noise on your BMW 3 Series replace it.
If it is a noise in the front of your automobile but it seems to you after reviewing not to come from your starter, consult this content page about front end noise on BMW 3 Series which may provide you other leads to fix your noise problem.

I listen a clicking noise of the key running in my neiman but no noise at the starter motor of my BMW 3 Series

If you listen a clicking noise at the starter motor of your BMW 3 Series, there are two possible failures related to this symptom. If you have in addition to the noise the motor is not running, it may be the “solenoid” is not supplied with energy. One of the most typical ways to relaunch it is to hit it with a metal bar to remove the dust that blocks it. If that is not enough, it may be the neiman who is concerned. You may have a problem with unplugged cable check your electrical installation. If after tracking this clicking noise on BMW 3 Series doesn’t come from your starter motor, check this article for more informations.