What does four-door limit maintenance mean?

[MacEmerson]

Four-door limit maintenance refers to the maintenance of the door limiters. Below is relevant information about car maintenance: First maintenance: Some manufacturers determine the first maintenance based on time or mileage. The exact timing for the first maintenance should be referred to the vehicle's user manual or warranty manual. The first maintenance is very important and free, so be sure to remember to do it to avoid missing it and affecting the car's third maintenance. Maintenance items: The main items of car maintenance include replacing engine oil, oil filters, transmission oil, spark plugs, air conditioning filters, air filters, brake fluid, etc. However, not all items need to be replaced every time, as it depends on their service life. In addition, maintenance also involves the inspection and upkeep of dozens of items across multiple systems such as the engine, transmission, air conditioning system, steering system, braking system, suspension, body, and tires.