For whom the nuts are ringing: what to do if the car won't start?

The most popular causes of car issues are in this material.
It is no secret that no sensors inside the system organs of the car, which seem to show all the "stuffing" of the car on the screen, can fail, and the car will simply refuse to start because of a breakdown. Just as a car cannot replace a person, a person cannot replace a car. However, to take care of the most frequent breakdowns is quite real. We've already covered the basics in the last piece, now it's time to move on to the big leagues.
Why does the car freeze up? - The cause may be in the fuel pump. This is the system that organizes the flow of fuel into the combustion chamber. A faulty pump or weak power will not allow the engine to start. How to find out? When starting, an unusual noise will be heard from under the hood. We don't recommend replacing or repairing the fuel pump by yourself - it's better to take the unit to a master.
The car's fuel filter may also "fly". The quality of modern fuel is not of high characteristics, so impurities and debris are possible. The filter cleans the fuel from unnecessary substances, but after 50 thousand km run the engine can be difficult to start because of the accumulation of such garbage and impurities. Try to change fuel filters on time. Steering wheel locking is also one of the frequent "ailments" of modern cars. Thus, the anti-theft system (and we know that there are a lot of auxiliary mechanisms in modern cars) can banal block the ignition key in the socket. This happens when the wheel has been turned to some side during parking. To cure the ailment - try turning the wheel during the ignition, usually the system should unlock the key slot for the ignition key.
Finally, let's add a little more about the car's electronic systems. There are a ton of nuances here: modern cars are equipped with an auto-start system, a remote engine start system and many others. So, the "gadgets" for the car have significant disadvantages: in case of electronic stuffing failure, the car will also refuse to start. Depending on the systems, you will either have to change the firmware, or go to an auto mechanic. Blocked starting due to "electronics" is the most painful of the motorist's problems.
Before you buy such "Terminator", think whether you need all its functions or it is better to do with the good old mechanics? 

p.s. I took most of the information for this article from this car site!