What does a small wrench on the car display mean?

[OJeremiah]

A small wrench on the car display is a maintenance reminder function set by the manufacturer to alert the owner that the vehicle requires servicing. Different car models from various companies have different preset maintenance intervals. The maintenance cycle is pre-set when the vehicle leaves the factory, so the small wrench symbol will appear after a certain mileage, typically between 5,000 to 8,000 kilometers, with some original factory settings exceeding 8,000 kilometers. Car maintenance primarily covers the engine system, transmission system, air conditioning system, cooling system, fuel system, power steering system, and more. The purpose of car maintenance is to keep the vehicle clean, maintain normal technical conditions, eliminate potential hazards, prevent malfunctions, slow down deterioration, and extend the vehicle's service life.