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What Are the Common Faults and Causes of Car Central Door Locks?

1 Answers
VanLayla
07/25/25 12:05am
Common faults in car central door locks generally include motor aging requiring replacement; blown fuses in the switch circuit needing replacement; malfunction of the central lock main unit requiring replacement; loosening of the main motor linkage rod needing tightening, among others. Below is additional information: 1. Central Lock: The full name is Central Control Door Lock, which is an automotive accessory. Using this lock allows for remote opening and locking of doors without inserting the key into the lock. It consists of a door lock switch, actuator, and controller. 2. Function: When the driver locks the door beside them, all other doors are simultaneously locked. The driver can open all doors simultaneously via the door lock switch or open a single door individually. When the vehicle reaches a certain speed, all doors automatically lock to prevent passengers from accidentally opening the door by operating the door handle.
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What items should be prepared for driving practice?

Daily personal items that you need to carry when going out; Depending on your height, you can prepare a cushion in case the seat is too low to see the reference points. Here are some precautions for learning to drive: Fasten your seatbelt when practicing in the training area. The speed is generally very slow, so the purpose of fastening the seatbelt is not for safety, but to develop good habits. For the Subject 3 test, you will be required to fasten your seatbelt. Many students who don't usually fasten their seatbelts will forget to do so during the Subject 3 test. Adjust the seat first after getting in the car. Everyone's height is different, so the seat needs to be readjusted after getting in the car.
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Should you fasten the seatbelt or adjust the seat first when getting in the car for the Subject 2 test?

First, adjust the seat and rearview mirrors to the appropriate position, then fasten the seatbelt. The deduction rules for the Subject 2 test require: 1. Starting requirements: Failing to fasten the seatbelt when starting results in disqualification; failing to use the turn signal when starting deducts 10 points; starting with the door open or not fully closed results in disqualification. 2. Reverse parking requirements: Not following the specified route or sequence results in disqualification; the vehicle body crossing the line results in disqualification; failing to complete the reverse parking results in disqualification; stopping midway results in disqualification; exceeding 4 minutes results in disqualification. 3. Parallel parking requirements: Added rule—stopping midway or rolling results in disqualification; removed rule—touching or scraping the poles results in disqualification, as the new standard has replaced the poles in the parallel parking area with solid yellow lines. Crossing or sweeping the lines results in disqualification. Failing to use the turn signal after stopping and starting results in disqualification.
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Can the driving test be taken when it rains during Subject Three?

Subject Three driving test can be taken when it rains. Here are some methods to handle the situation when it rains during the Subject Three test: 1. Turn on the windshield wipers in time when it rains: Adjust the speed of the wipers according to the intensity of the rain to maintain clear visibility. It is best to stop the car and turn on the hazard lights when visibility is poor. 2. Avoid sudden acceleration and hard braking: During the test, be sure to avoid sudden acceleration and hard braking, as the road is slippery and visibility is reduced in rainy conditions, making the wheels prone to skidding. Calm and careful operation is required. 3. Maintain a safe distance: When driving in heavy rain, pay more attention to keeping a safe distance than usual. Visibility is reduced in rainy conditions, and the road is prone to skidding. Remember not to brake suddenly but to use light and intermittent braking, which not only controls the speed but also gives the following vehicle enough time to prepare for braking in poor visibility. 4. Control the speed: Drive at a slower speed than usual during training in rainy conditions. During the Subject Three road test in the rain, the examiner will also be concerned about driving safety, so safety comes first, and the test is secondary.
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What Causes the Sunroof Rattle in the Envision?

The causes of sunroof rattle in the Envision: 1. Insufficient lubrication of the sunroof sliding rails; 2. Dust accumulation in the sunroof tracks; 3. Loose sunroof screws. The Envision has a body length, width, and height of 4694mm, 1839mm, and 1686mm respectively, with a wheelbase of 2750mm. It features front-wheel drive, a front MacPherson independent suspension, and a rear multi-link independent suspension. The Envision is equipped with a 1.5T turbocharged engine paired with a 7-speed dual-clutch transmission. This engine delivers a maximum power of 124kW and a maximum torque of 250Nm. It also incorporates direct fuel injection technology and utilizes an aluminum alloy cylinder head and block.
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What are the reasons for uneven wear between left and right brake pads?

Reasons for uneven wear between left and right brake pads are as follows: 1. The rate of wear is mainly directly related to the material of the brake disc and brake pads, so uneven material of the brake pads is one possibility; 2. Frequent braking during turns causes uneven force distribution on the left and right wheels, leading to uneven wear; 3. The right brake disc may be deformed; 4. Uneven retraction of the brake caliper pistons, such as one side's piston retraction bolt being dirty; 5. Significant difference in the length of the left and right brake fluid pipes; 6. The telescopic rod is sealed by a rubber boot, but if water enters or lubrication is insufficient, the rod cannot move freely, causing the outer pad to remain in contact with the disc and resulting in additional wear; 7. Inconsistent braking times between the left and right brakes.
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What is the Difference Between 5w30 and 0w30?

5w30 and 0w30 engine oils differ in their low-temperature fluidity, with the following expanded details: Low-temperature fluidity of 5w30 and 0w30 engine oils: 5w30 engine oil can flow normally at temperatures as low as -30 degrees Celsius; 0w30 engine oil can flow normally at temperatures as low as -35 degrees Celsius. Engine oil naming: The 'w' stands for winter, and the smaller the number before the 'w', the better the oil's low-temperature fluidity. The number after the 'w' represents the oil's viscosity at 100 degrees Celsius. Functions of engine oil: Engine oil lubricates and reduces friction in the engine, assists in cooling, seals against leaks, prevents rust and corrosion, and provides shock absorption. Base oil is the main component of lubricating oil, determining its fundamental properties. Additives compensate for and improve the shortcomings of the base oil, imparting new properties, and are an important part of lubricating oil.
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