AC Compressor
A hot car is not a great thing. As a car owner, you should take care of your car’s air conditioning system. AC system failures are usually caused by leaks but if there is no leak, then the problem most likely lies in the AC compressor.
The AC compressor has a clutch mechanism on the pulley end and it can keep the AC compressor from engaging. If this is not the case, it could be that the internal seals failed which makes the AC compressor incapable of building any system pressure. Either way, a replacement will be necessary.
Wheel speed sensor
The wheel speed sensor is an important car part for the ABS braking system and traction control. You will immediately know when there is something wrong with it because the dash will light up like crazy.
The wheel speed sensor is mounted on the wheel bearings so they also get exposed to road debris. The good news is that it is one of the cheapest car parts so you can easily replace it if needed.