The most common reason is the brake rotors have become warped due to excessive heat, or they have become too thin to dissipate heat.
The “Service Engine Soon” light is to let you know that the computer has detected a problem in the system. If the car seems to run fine then just have a qualified technician check the system to find the problem.
Your car may need an alignment, but the most common cause is a tire and wheel assembly out of balance.
That is the tire’s maximum air pressure and is set by the vehicle’s manufacturer. This information can be found on the door jamb of most vehicles.
The problem is most likely in the charging system. This could cause a battery failure if not checked soon.
Some manufacturers now recommend synthetic oil for their vehicles. The price is usually much higher so check your owner’s manual for proper application.
Even though your blower is part of the AC system that isn't what makes the air cold. This is why an AC performance test is recommended.