
The second maintenance mainly involves changing the engine oil and oil filter. Inspection and maintenance items for the second vehicle maintenance: After performing the three cleans and three filters operation on the engine, it should start easily, run smoothly, have normal exhaust (meaning the tail gas meets standards), with water temperature and oil pressure meeting requirements, stable rotation speed, no abnormal noises, and all belts properly tensioned without any leaks (water, oil, electricity, or gas); the steering free travel and toe-in should meet requirements, with steering being light, flexible, and reliable, and the front wheels should not wobble left and right or pull to one side while driving; the clutch free travel should meet requirements, with operation being convenient, separation being thorough, engagement being smooth and reliable, no abnormal noises, and no oil leaks in the hydraulic system; the transmission, drive axle, universal joint (or half-shaft) transmission device, etc., should be well lubricated, reliably connected, with no abnormal noises or overheating, no gear jumping, flexible gear shifting, and no oil leaks; the brake pedal free travel and brake clearance should meet requirements, with service and parking brakes functioning well, no pulling to one side or dragging during braking, the inertia proportioning valve working normally, and no oil leaks; tire pressure should be normal (different models have different high and low-pressure standards); the suspension and shock absorbers should be securely fixed and function normally, with the wheel hub bearing temperature not overheating after driving; the generator, starter, lights, instruments, signal lights, buttons, switches, and other auxiliary equipment should be complete and intact, functioning normally; all lubrication points on the vehicle should be filled with lubricating oil; the entire vehicle should be washed and cleaned. Introduction to the second car maintenance: The second maintenance of a car is generally performed when the new car's mileage reaches 10,000 kilometers. Usually, after such extensive testing and maintenance during the second maintenance, the entire vehicle condition will significantly enter its best state, ensuring the highest level of driving safety. After the second maintenance, the new car's performance is basically stable. Thereafter, depending on the vehicle condition and usage habits, a minor maintenance should be performed every 5,000 to 7,500 kilometers, and a comprehensive check-up maintenance every 10,000 to 15,000 kilometers.

A car owner who just completed the second maintenance shares the key points: Engine oil and oil filter must be replaced—my SUV took 5 liters of full synthetic oil. The air filter was taken out and blown clean; the mechanic said it could wait until next time for replacement. A four-wheel cross rotation plus dynamic balancing cost 200. The 4S shop kept insisting on cleaning the throttle, but I ignored it since the idle was stable. I saved some money by bringing my own cabin air filter, though replacing it myself was too hard on the back—better to pay for convenience. The biggest surprise was finding the coolant below the minimum level, so they topped it up with half a liter of green liquid for free. The mechanic also checked the brake pad thickness and said they could last another 20,000 km.

A decade of car repair experience summarized for the second maintenance: Don't be fooled by 4S shop packages. The core is just engine oil, three filters, and tire rotation. If the cabin air filter doesn't smell bad, just blow it clean and reuse it. The key is to see if the mechanic checks the chassis bushings and ball joint dust covers - aging in these hidden areas is most dangerous. Last time I saw a Corolla with cracked stabilizer bar bushings, making creaking noises over bumps that the owner completely missed. If tires show uneven wear, a wheel alignment is mandatory - don't believe that wheel balancing can fix it. Brake fluid moisture testing is free; change it if it exceeds 3%. Pay special attention to coolant pipe connections for leaks - many new cars have loose hose clamps.

Just finished helping a colleague with the second maintenance claim. The key points of the second maintenance are on page 23 of the maintenance manual: changing the engine oil and oil filter, tire rotation, and a full vehicle circuit inspection. Pay attention to whether the work order includes brake disc thickness measurement and chassis bolt torque recheck. The coolant freezing point test is often omitted, and northern car owners must keep an eye on it. You can save half the money by purchasing the Mann C14007 air filter yourself, and the 80 yuan installation fee at the 4S shop is still reasonable. Be wary of cleaning services; pouring a catalytic converter cleaner into the fuel tank is purely an IQ tax. You might as well spend that money on replacing the wiper blades.


