- Oil inspection
Oil inspection is an important part of new energy vehicle maintenance. The steering system oil inspection mainly focuses on whether the steering control force, steering wheel return and oil pump pressure are normal. The cooling system oil inspection involves the sealing of the cooling system, the tightness of the fan belt, the sensitivity of the thermostat and the cooling water temperature. These inspections ensure the normal operation of various systems of the vehicle and improve driving safety. - Tires
Tires are an important part of new energy vehicle maintenance. First of all, the degree of wear of the tires needs to be checked regularly, and if they are excessively worn, they should be replaced in time. Secondly, the tires are in direct contact with the ground and have a higher chance of damage, so it is necessary to check the tire pressure, four-wheel balance and whether there are cracks or trauma on the tread. Especially in winter, due to the low temperature, the rubber will become hard and brittle, the friction coefficient will decrease, and the tires will be more likely to leak or puncture, so special attention needs to be paid. - Steering system inspection
The steering system is one of the important items in the maintenance of new energy vehicles. The steering system inspection mainly includes the connection and tightening status of the steering wheel and steering column, the connection and tightening status of the steering gear body, the inspection of the steering tie rod and dust cover, and the inspection of the steering assist function. These inspections are aimed at ensuring the stability and sensitivity of the steering system, thereby ensuring driving safety. - Engine room
The engine room is an important part of the maintenance of new energy vehicles. The engine room inspection must be carried out by professionals, and protective measures must be taken before opening. During maintenance, focus on checking whether the wiring harness in the engine room is aging or virtual. It is particularly important to note that due to the particularity of new energy vehicles, the interior of the engine room cannot be cleaned with water. In addition, the low-voltage wiring harness, connector status of the engine room and various parts, and the high-voltage wiring harness of the chassis need to be protected and fixed, and handled as appropriate. - Antifreeze
Antifreeze plays the role of cooling the motor in new energy vehicles, which is similar to the coolant function of fuel vehicles. However, unlike fuel vehicles, the antifreeze replacement cycle of electric vehicles is usually 2 years or 40,000 kilometers, which is determined according to the time specified by the manufacturer. Regular replacement of antifreeze can ensure that the motor can operate normally under various temperature conditions, thereby extending the service life of the vehicle. - High-voltage wiring harness detection
High-voltage wiring harness detection is a key step to ensure the safe operation of new energy vehicles. This test mainly checks the conductivity and insulation of the high-voltage wiring harness. Similar to the fuel system of ordinary cars, the condition of the high-voltage wiring harness is directly related to the safety of the driver and passengers. During the test, a multimeter is usually used to separate the wiring harness and power controller connected to the car’s power battery, and then test them one by one with the probe of the multimeter. If the test result is within the specified numerical range, it is considered qualified. Most car companies provide a five-year warranty for high-voltage wiring harnesses. - Battery pack detection
Battery pack detection is an important item for new energy vehicle maintenance. Domestic electric vehicles mainly use lithium iron phosphate batteries, which have a long life, fast charging and discharging speed and high safety. The life of this battery can reach nearly ten years, if calculated based on two hundred charges a year. Battery pack detection is usually carried out by connecting a computer and detection software, and you can view data such as battery voltage, power and temperature. If there is a problem with the battery cell, it will affect the working status of the entire battery pack. The general battery maintenance time is about forty-five minutes. - Avoid high current discharge
Avoiding high current discharge is one of the key items in the maintenance of new energy vehicles. When new energy vehicles start or accelerate too fast, it is easy to cause instantaneous high current discharge, which may produce lead sulfate crystallization, which in turn damages the physical properties of the battery plate. Therefore, in order to extend the battery life, car owners should try to accelerate evenly and avoid stepping on the accelerator, especially when driving at high speed, and try to control the speed to about 100 kilometers to reduce the risk of high current discharge. - Air conditioning system
The air conditioning system is one of the important items in the maintenance of new energy vehicles. Similar to fuel vehicles, the air conditioning system of electric vehicles needs regular inspection and maintenance. Since the maintenance cycle of new energy vehicles is about once every 10,000 kilometers, the inspection and maintenance of the air conditioning system should also follow this cycle. In addition, components such as air conditioning filters also need to be replaced regularly to ensure the normal operation of the air conditioning system and the quality of the air in the car. Following the manufacturer’s maintenance manual for maintenance is an important means to ensure the safety and good condition of new energy electric vehicles. - Braking system maintenance and maintenance
The braking system is a key safety component of new energy vehicles, and its maintenance and maintenance are essential. In particular, the brake disc, as part of the braking system, has a direct impact on the braking performance of the vehicle. In order to ensure driving safety, the wear of the brake disc should be checked regularly to ensure that its thickness meets the safety standards specified by the manufacturer. In addition, the surface of the brake disc should be kept flat to avoid brake vibration or noise caused by unevenness. If severe wear or uneven surface is found, it should be replaced or repaired in time to maintain the optimal braking performance of the vehicle. - Motor system
The motor system is the core component of new energy vehicles and is responsible for driving the vehicle. Maintenance of the motor system mainly involves the following aspects: 1. Motor cleaning: Clean the motor regularly to ensure that there is no dust, oil or other impurities on its surface to maintain the heat dissipation and electrical performance of the motor. 2. Cable inspection: Check whether the cable is damaged, aged or in poor contact, and ensure that the cable is firmly connected to avoid electrical failures. 3. Cooling system maintenance: The motor cooling system is responsible for cooling the motor to prevent overheating. Check regularly whether the coolant is sufficient, whether the cooling fan is working properly, and ensure that the heat sink is not blocked. 4. Insulation test: Perform motor insulation test regularly to ensure that the motor will not have electrical short circuit or leakage during operation. - Change engine oil
Changing engine oil is one of the important maintenance items for new energy vehicles. Engine oil plays a role in lubrication, cooling and cleaning in the engine. For new energy vehicles, their engines also need good engine oil to maintain normal working conditions. As the use time increases, the performance of the engine oil will gradually decline, so it needs to be replaced regularly to ensure the normal operation of the engine. Generally, it is recommended to replace it after a certain mileage or a certain time. The specific time interval can be referred to the vehicle manual. Correct engine oil selection and replacement can extend the life of the engine and improve vehicle performance. - DC/DC (PEU) output voltage detection
DC/DC (PEU) output voltage detection is an important part of the maintenance project of new energy vehicles. The DC/DC converter, also known as the PEU (Power Electronics Unit), is responsible for converting high-voltage DC power into low-voltage DC power to power the vehicle’s low-voltage electrical system. The stability of the output voltage directly affects the normal operation of the vehicle’s electrical system. Therefore, regular testing of the output voltage of the DC/DC (PEU) can ensure that it works within the normal range, thereby ensuring the stable operation of the vehicle’s electrical system. - Air filter
The air filter is one of the important items for the maintenance of new energy vehicles. The main function of the air filter is to filter the air entering the engine to prevent dust and impurities from entering, thereby protecting the engine. If the air filter is not replaced for a long time, dust and impurities may clog the filter, resulting in a decline in engine performance and even possible damage to the engine. Therefore, regular replacement of the air filter is a key step in maintaining the performance of new energy vehicles and extending their service life. - Gear oil
Gear oil is an indispensable part of the maintenance of new energy vehicles. Gear oil is mainly used to lubricate and protect the vehicle’s transmission system, especially those parts involving high friction and high loads. Since new energy vehicles usually have more complex transmission systems, the selection and use of gear oil is particularly important. Suitable gear oil can not only extend the life of the vehicle, but also improve driving performance. Improper gear oil may cause premature wear of the transmission system and may even cause more serious mechanical failures. Therefore, regular inspection and replacement of gear oil is a key step in the maintenance of new energy vehicles.
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