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What are the symptoms of a faulty starter motor carbon brush?

1 Answers
CassidyRose
07/30/25 7:05am
The carbon brushes in the starter motor, if damaged, will cause the motor to either fail to rotate or lack sufficient power. Below is more information about the starter motor: 1. Composition of the starter motor: The automotive starter motor converts the electrical energy from the battery into mechanical energy, driving the engine flywheel to rotate and enabling the engine to start. Before the engine can operate under its own power, it must be rotated by an external force. The starter motor is the core component of the starting system, consisting of three main parts: a DC transmission motor, a transmission mechanism, and a control device. 2. Precautions for using the starter motor: In winter, starting difficulties are more common. When starting multiple times, each attempt should not last too long. Each use should not exceed 5 seconds, with an interval of 2-3 minutes between starts. After the vehicle has traveled 2,000 kilometers, check whether the fasteners are securely connected and whether the wire contacts are in good condition. After the vehicle has traveled 8,000 kilometers, inspect whether the commutator surface is smooth, whether the carbon brushes are stuck in their holders, and whether the carbon brush spring pressure is normal. If any faults are found, they should be repaired after disassembly.
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How to achieve power-on only without starting the engine with one-key start?

To achieve power-on only without starting the engine with one-key start: When the vehicle is in the off state, press and hold the one-key start button for 3 seconds without stepping on the brake pedal to power on without starting. Some vehicles require pressing the ignition switch twice consecutively to activate this mode. One-key start systems are quite common and are equipped in many commuter cars, offering the convenience of operation without inserting the key into the lock cylinder—simply press the one-key start button. For traditional key systems, turning the key from the LOCK position to ACC or ON will power on the vehicle, as long as it is not turned to the START position. The one-key start button is designed with segmented functionality to allow the driver to use certain vehicle functions, such as lights or multimedia, without starting the engine.
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What does the term 'trip' mean in a car's context?

In a car, 'trip' refers to the trip mileage, also known as the short-distance mileage. This feature is designed to help drivers track the accumulated distance of a specific journey, and it can be reset. The trip mileage represents the distance traveled before the current reset. If you wish to start recording the mileage anew, you can reset it by holding down the reset button. The smallest unit for trip mileage is 0.1 kilometers, and the basic calculation method is the fuel consumption per 100 kilometers, which is derived by dividing the actual fuel consumption by the distance traveled. The car's odometer displays the vehicle's speed and consists of two gauges: a speedometer and an odometer, typically located directly in front of the driver's position. Methods to verify the mileage include assessing wear and tear or checking the vehicle's maintenance records at a 4S shop.
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How much can the 5000 km maintenance be delayed?

5000 km maintenance cannot be delayed. When a new car reaches the 5000 km mileage requirement, it must go to the 4S shop for its first maintenance. If the mileage is reached first but the time requirement is not met, and the owner wants to delay the first maintenance, they should consult and communicate with the 4S shop staff. Otherwise, the 4S shop staff may consider the owner as having abandoned the warranty and refuse to provide free first maintenance. The first maintenance for a new car generally includes changing the engine oil, cleaning the three filters, checking the working condition of the car engine, the chassis transmission components, the tire pressure and wear, etc. Therefore, the condition of the vehicle is closely related to maintenance and repair. Regular maintenance can extend the service life of the vehicle and ensure its normal use.
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How often should the transmission fluid of a Lexus ES be changed?

Lexus ES transmission fluid should be changed every 2 years or after driving 60,000 kilometers. Transmission fluid is an oil product that keeps the gear system clean, lubricates and extends the life of the transmission device, and provides effective lubrication even in low-temperature conditions. The Lexus ES is a model under the Lexus brand, with body dimensions of 4900mm in length, 1820mm in width, and 1450mm in height, and a wheelbase of 2820mm. In terms of exterior design, the sharp and dynamic spindle grille of the Lexus ES, combined with the striking L-shaped LED daytime running lights, outlines a bold yet sporty front layout. When the view shifts to the side of the car, the clean and smooth waistline extends from the front to the rear, interpreting a more agile and luxurious style.
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Do I need to deal with speeding less than 10%?

Speeding less than 10% requires handling. The penalty standards for motor vehicle speeding are as follows: 1. Exceeding the speed limit by less than 10% results in 3 demerit points; 2. Exceeding the speed limit by more than 10% but less than 20% results in 3 demerit points; 3. Exceeding the speed limit by more than 20% but less than 50% results in 3 demerit points; 4. Exceeding the speed limit by more than 50% but less than 70% results in 6 demerit points and may also lead to license suspension; 5. Exceeding the speed limit by more than 70% results in 6 demerit points and may also lead to license suspension. You need to go to the local traffic management department to complete the warning procedure. If you fail to handle it within 15 days, you may be ordered to pay fines and late fees. If you continue to ignore it, your driver's license may be revoked.
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How many points will be deducted for driving on the highway with less than one year of driving experience in 2020?

In 2020, driving on the highway with less than one year of driving experience will not result in point deductions but will incur a fine. For new drivers, the probation period starts from the day they obtain their driver's license and lasts for 12 months. During this probation period, new drivers are not allowed to drive on the highway. There is one exception: new drivers can drive on the highway if accompanied by an experienced driver who has held a license for more than three years. It is important to note that the experienced driver must sit in the front passenger seat; sitting in the back seat is not acceptable. New drivers must also display a probation sign on the rear of their vehicle. Failure to do so will also result in a fine. Driving a motor vehicle requires certain skills, and lacking these skills can lead to traffic accidents if one drives recklessly. Generally, individuals without a license are not permitted to drive on public roads.
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