Depending on the vehicle equipment, the heating system can be equipped with an air conditioning system, but there are options without air conditioning

Electrical equipment is made according to a single-wire circuit: the negative terminals of sources and consumers of electricity are connected to the "ground" - the body and the power unit of the car, which act as a second wire

Replace the hub bearing when play appears.

Bearing wear can be identified by increased noise when driving.

We replace the pump in case of noise from its bearing or in case of tight rotation of the pump pulley, large radial play of the pump shaft