The higher the profit, the lower the cost performance.
At the same time, the more automobile oil is added, the better. Usually, the static oil level (after the engine stops for 5 minutes) is higher than the oil mark scale. In the dynamic state, the oil level should not be lower than the off-line position of the oil gauge. Second, the same is true of antifreeze. The general selection standard is the lowest temperature in this area five years ago plus 5 degrees. It is not that the lower the antifreeze temperature, the better. The lower the temperature of antifreeze, the more corrosive it is and the more expensive it is. All automobile oils should be avoided as far as possible, such as automatic transmission oil, brake system hydraulic oil and steering assist oil. If the working pressure is not enough, the air resistance caused by foaming will increase and the temperature of the corresponding mechanism will be too high. Thirdly, when carrying out repair work, often when the owner asks whether all the bolts are tightened, the repairman will generally answer that all the bolts are tightened. In fact, the tightening torque of bolts in various parts of the automobile has its corresponding specified value according to its diameter, pitch and use. If it can't reach the specified value, it will loosen, which is of course not good. However, blindly increasing the tightening torque will deform the fastened parts, and even cause screw elongation, thread deformation and fracture. Generally speaking, the bolts that have been disassembled and inspected cannot be used again. Some bolts are assembled with curing glue, which may cause stretching or other damage when disassembled. Therefore, new parts must be replaced when reassembling. Although some bolts can be reused, there is a clear limit on the number of times of reuse, and the bolts must be strictly inspected before reuse. Four, after the tire repair, the repair shop must be required to do the tire dynamic balance test, and the tire pressure must be inflated according to the maintenance manual or automobile technical specifications. The higher the tire pressure, the better. Generally, if you need to run at high speed frequently, you can lower the tire pressure slightly. Too high or too low tire pressure will lead to abnormal tire wear. The standard value of tire pressure is generally marked on the door or in the fuel tank cover. If your car has a collision, whether it is insured or not, please ask a qualified loss assessor to quote, which will have a great error. If the quotation is too low, the repair shop is unwilling or unwilling to repair it. If the quotation is too high, it will affect your reliability in the insurance company. 6. In order to prolong the brightness and hardness of the paint on your car surface and prevent all kinds of corrosion, it is very common to do beauty treatment on the car surface, but when doing beauty treatment, you should believe what you see according to your consumption power and the purpose of your car, and don't trust some products. Seven, for car paint surface scratches are generally not exposed primer (feel barrier-free), after polishing treatment can be eliminated, deep scratches can also be treated locally, without large-scale painting. Eight, for high-end cars, try to urge manufacturers to use the original paint, and never use inferior paint to save money. In order to decorate their cars with personality, many car owners are willing to change into their favorite audio-visual equipment or other electrical appliances. When making these additions and modifications, we must pay attention to the regular manufacturers. Such additions and modifications have caused many fires or other accidents due to chaotic wiring (such as burning computers or generating interference signals that make computers unable to work normally). When installing the anti-theft device, you should choose a regular brand-name product and wire it according to the technical requirements of the product to prevent the line from heating due to excessive load. In addition, many mid-to high-end cars have installed anti-theft devices before leaving the factory. If we gild the lily, it will be counterproductive. At present, domestic cars listed are Audi A6, Passat B4 and B5, Santana Superman in 2000, Santana Century Rookie, FAW-Volkswagen Bora, Jetta New Interior Series and Hongqi Series; Imported models include Skoda Eurasia, imported Honda, Audi A8, Volkswagen Beetle, Nissan Style A32, A33, and some models of Mercedes-Benz, BMW, Cadillac, Volvo, Opel, Ford, Toyota and Jaguar, all of which have their own computer anti-theft systems, and the owners don't have to spend money. When buying a car, you must keep the password of the anti-theft computer and the code of the car key. These data are the key to configuring the key. Once lost, it will bring unnecessary trouble to vehicle maintenance and key configuration. If your car is pre-installed with an on-board computer anti-theft system, when someone steals a car, just drop the key to the bottom and the data chip in the key will be damaged. No one can take your car away. Car owners are often subconsciously price-sensitive when installing anti-theft devices and want the cheapest one. Be sure to try to dispel this idea! Whether you accept it or not, a burglar alarm with complex design and complete functions needs to spend more money. Of course you don't want to protect half the car and leave the other half to the car thief. You should also calculate the security and convenience that the anti-theft device can bring to you, and you will find it worthwhile. At the same time, the quotation of the repair shop often includes the installation fee. Different manufacturers charge different installation fees, but don't take the installation fee as the first criterion for selecting manufacturers. Because some manufacturers with low installation cost, because the accessories and tools used are also very cheap and the technology is rough, they often can't play the role of the advanced anti-theft device you bought, which will seriously bring hidden dangers to the car; Moreover, this low installation quotation often does not contain any after-sales warranty. If some manufacturers offer higher prices, it may include installation fees and warranty fees. So before bargaining, be sure to ask what the manufacturer's quotation specifically contains and how long the warranty will last. Those manufacturers who are full of confidence in the quality of their anti-theft devices and the installation technology of technicians will definitely promise a good warranty. Car owners should remember this truth: if the product quality and installation technology are not too hard, no matter how low the price is; The product quality is good, the technology is excellent, and it is worthwhile to be a little expensive. Never replace the wick with large wattage or increase the brightness of headlights by removing relays. The result is unimaginable. In addition, blindly installing external decorative parts such as tail wings will increase fuel consumption by 3-5%. Ten, no matter what kind of maintenance enterprise, all the documents are generally the same. The documents designed by the enterprise itself must be put on record by the administrative department, and all the contents in the bill of lading are formed after thousands of bloody lessons, so don't be afraid of trouble, and urge the factory to make careful records, because some enterprises will make a big fuss when they have conflicts with customers. To tell the truth, it is difficult for any automobile maintenance enterprise to control the quality of automobile parts. First, from the management point of view, parts management and automobile maintenance belong to two systems respectively, and parts quality management is very difficult; Second, it is impossible for automobile maintenance enterprises to have perfect parts testing equipment. However, the integrity rate of the experience test only accounts for 30%. Therefore, we can only rely on matching parts and original parts with greater sincerity. For those so-called accessories and parallel parts, it is not necessarily completely unusable. Generally speaking, accessories and original factory accessories are prepared for vehicle production, and accessories are prepared for maintenance market, but these concepts are easily confused for car owners, so as car owners, the first thing to pay attention to is to use original factory accessories for key parts; Second, listen to the advice of maintenance personnel with an open mind; Third, don't use fake and shoddy accessories; Fourth, no matter what accessories are used, the repair shop must indicate them on the maintenance certificate after completion. Twelve, after the factory picks up the car, it is generally necessary to hand over the documents to the customer, including the construction list, material list, external processing list, inspection certificate, original contract, financial receipt, out-of-town card, etc. These documents must be properly kept. 13. For major faults, try to test run with the factory inspector when picking up the car, and determine whether or to what extent the fault is eliminated under the conditions approved by both parties. Fourteen, the replacement parts and assemblies of the warranty period should be calculated from the date of receipt of the car after maintenance, rather than from the date of purchase. At the same time, we must understand that the accessories on this car cannot be replaced by other models. Even if they can be replaced, they must be strictly checked or matched. 15. Pay more attention to details during acceptance. For example, all fixing or connecting bolts on the assembly should be a label or a form. When things are different after being repaired, be sure to ask why. Bolts on general components, especially on key parts, are not allowed to be replaced by other bolts. 16. The normal working temperature of the vehicle is not as low as possible. The normal working temperature of general vehicles should be between 80~ 105 degrees. In order to solve the problem of high temperature of vehicle engine, some repair shops often remove the thermostat to achieve the purpose of cooling down. This should not be done, which will not only increase the driving wear of the cold car, but also cover up other faults. 17. Modern vehicles are equipped with braking acceleration slip adjustment (ABS, Brake Assist System), so when checking and eliminating vehicle faults related to braking, four-wheel drag printing is not required as in the past, but there are problems such as four-wheel continuous drag printing, intermittent marks and rolling marks. Within a certain speed and specified distance, vehicles that do not shift gears or sideslip are up to standard. 18. When picking up the car, you must carefully check the business list, including maintenance items, man-hour expenses, parts details and expenses, price increase rate, taxes and fees (whether it is taxed twice), and even provide the manufacturer with the parts replaced during maintenance, and test drive before payment. After the trial run is satisfactory, check the condition of the whole vehicle and compare it with your own records before delivery. After everything is satisfactory, sign a warranty agreement and a claim agreement with the repair shop (pay attention to your date of picking up the car) and then make the final payment. When leaving the factory, you should take all the documents related to this maintenance, including the old parts, and keep them properly, which is helpful for maintenance disputes. In addition, before leaving the factory, the general repair shop will give you some advice when using the car, which is very important and must be very careful. Nineteen, when you are in a garage, you are still not satisfied after many adjustments and rework. You would rather let them ask experts from other factories to help you than change to other garages easily. Because the elimination of automobile faults, especially engine faults and computer control system faults, is a gradual process. Learn to understand. Of course, we must be clear about how to exclude it in the end, because it has something to do with the checkout. Leaving the environment where you know your faults best easily will cause a lot of unnecessary losses. Some unhealthy enterprises will vilify other enterprises at the same time, exaggerate your mistakes and eventually empty your pockets. Twenty, after the acceptance of automobile collision repair, should first check the safety, stability, smoothness and flexibility of the control, and then check the surface quality. For partially repaired metal surfaces, small magnets can be brought with them during acceptance, and the magnetic force test should be carried out within the original collision range. If the suction is too small, the plastic operation is not in place and the putty is too thick. Twenty-one, with the passage of automobile service time, due to the aging of parts and systems, automobile emissions (exhaust emissions, fuel evaporation, crankcase blowby, etc. ) gradually exceeds the standard and needs to be dealt with in time (commonly known as changing the yellow label to the green label). This job is not simply to replace a part or add some additives, or even to add alcohol to the fuel tank. We must make a detailed scientific diagnosis and find out the reason. Nowadays, many big cities attach great importance to the distribution of automobile exhaust, and there are more and more real-time on-line (road inspection) detection of in-use vehicles. So, I was fooled for a while, and it was myself who was unlucky at that time. Twenty-two, in the case of energy permits, as much as possible to participate in various public activities organized by some maintenance enterprises, one is to show support for the enterprise, and the other is to maintain friendly relations with the enterprise as always, which is very important for every car owner. Twenty-three, after receiving the car, if you are satisfied with the maintenance quality, you should thank the repair shop at the right time and in the right way. This is very important. Twenty-four, once the problem is found after getting the car back, you should get in touch with the repair shop as soon as possible and make an appointment to share the maintenance time and expenses. Twenty-five, according to the new management regulations of automobile maintenance enterprises in 2005, the quality guarantee period of motor vehicle maintenance is calculated from the date of completion of maintenance. The quality guarantee for commercial vehicle repair or assembly repair is vehicle running 18000 km 100 days; The second-level maintenance quality assurance vehicle runs 5000 kilometers or 30 days; The warranty period for primary maintenance, minor repairs and parts repair is 2000km or 10 day. The quality guarantee period for vehicle repair or assembly repair of passenger cars is 20,000km or 120 days; The warranty period of secondary maintenance is 6000 km or 35 days; The warranty period for primary maintenance, minor repairs and parts repair is 2000km or 10 day. In the same garage, if the same problem cannot be solved three times in a row, the owner can ask for double indemnity fees. Twenty-six, motor vehicle maintenance operators of motor vehicles for secondary maintenance, assembly repair, vehicle repair, not issued or issued a false certificate of completion of motor vehicle maintenance, the road transport management institution at or above the county level shall order it to make corrections; If the illegal income exceeds 1 10,000 yuan, the illegal income shall be confiscated and a fine of more than 2 times 1 times shall be imposed; If there is no illegal income or the illegal income is less than 3,000 yuan, a fine of 5,000 yuan to 20,000 yuan shall be imposed. If the circumstances are serious, the motor vehicle maintenance license shall be revoked; If a crime is constituted, criminal responsibility shall be investigated according to law. Twenty-seven, the regional road transport management agencies are responsible for accepting complaints from car owners and handling them within 15 days from the date of accepting the complaints. If the situation is complicated, it can be handled by the person in charge of the road transport management institution at or above the county level within 60 days from the date of acceptance, but the relevant person shall be informed. 28. When there is a conflict with the maintenance enterprise, although the relevant laws do not expressly stipulate who will complete the evidence collection for some technical and parts quality-related issues. However, from the perspective of relevant laws and regulations, the owner is obviously in a weak position between the owner and the maintenance enterprise. Therefore, when encountering the above related problems, we should advocate the inversion of the burden of proof. In other words, maintenance companies should prove that they are not at fault.