What is the difference between A maintenance and B maintenance?

[LeSebastian]

Here are the specific differences between A maintenance and B maintenance: 1. Maintenance items: A maintenance includes simple inspection, computer connection check, and oil and oil filter replacement; B maintenance involves more in-depth inspections than A maintenance, such as removing tires to measure brake disc thickness, etc. In addition to the contents of A maintenance, B maintenance also includes replacing the air filter and cabin air filter. 2. Maintenance categories: A maintenance includes engine oil, oil filter, lubrication maintenance, windshield washer fluid top-up, full vehicle fluid inspection, computer diagnostics, drainage check, tire tightening, tire pressure (5 tires), chassis inspection (suspension, brake discs, pads, and all chassis components), interior inspection (horn, headlight washer, seat belts, interior lights, cigarette lighter, and all functions), battery test, and resetting maintenance and tire pressure warning lights; B maintenance includes adding air filter replacement, cabin air filter replacement, air conditioning sterilization, sunroof lubrication, intake manifold, throttle, and fuel injector cleaning without disassembly, plus all the items included in A maintenance.