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Must Transmission Fluid Be Changed at a 4S Shop?

1 Answers

Roman

07/30/25 12:32am

Transmission fluid does not necessarily have to be changed at a 4S shop; it can also be replaced at a repair shop. However, it is essential to use the automatic transmission fluid specified by the manufacturer when changing the fluid. Transmission fluid is a lubricant that keeps the gear system clean, ensuring the transmission operates properly and prolonging the lifespan of the transmission components. Here are some key points about transmission fluid: 1. Transmission fluid is a lubricant designed to maintain the cleanliness of the gear system, providing effective lubrication even in low-temperature conditions and reducing fluid loss under harsh operating conditions. 2. Depending on the transmission structure, transmission fluid is categorized into automatic transmission fluid and manual transmission fluid.

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What Causes Soft Brakes After Bleeding?

If the brakes still feel soft after bleeding, it may be due to long-overdue brake fluid replacement or leakage from the master cylinder piston. Below are the specific reasons for soft brakes after bleeding: Long-overdue brake fluid replacement: Brake fluid should normally be replaced every 2 years or 50,000 kilometers. Brake fluid has the property of absorbing moisture from the air. If not replaced in time, excessive water content inside the fluid can generate vapor, leading to air pockets in the brake lines. This affects braking performance, resulting in soft brakes. Master cylinder piston leakage: Due to prolonged use, the rubber seals inside the master cylinder piston may deteriorate, causing leakage and fluid backflow. This condition results in soft brakes and potential leakage from the wheel cylinders. Insufficient hydraulic pressure in the brake system leads to soft braking.

What Causes White Smoke and Shaking from the Engine?

Reasons for white smoke and shaking from the engine: excessively low engine temperature, water in the fuel supply system, delayed fuel injection timing, poor fuel injector atomization, etc. Excessively low engine temperature: Some diesel fuel turns into oil vapor without burning and is discharged from the exhaust pipe along with the exhaust gas, resulting in white smoke. Water in the fuel supply system: If there is water in the fuel or combustion chamber, the water is heated by the combustion heat in the cylinder and turns into steam, which is discharged from the exhaust pipe, forming white smoke. Poor fuel injector atomization: Poor atomization leads to incomplete combustion of diesel fuel, which mixes with the high-temperature exhaust gas from normally operating cylinders in the exhaust pipe, causing white smoke.

Should You Press the Brake When Starting an Automatic Transmission Car?

For an automatic transmission car, you don't need to press the brake if starting while stationary. However, if the car is about to move, pressing the brake is necessary. Here are explanations for both scenarios: 1. Stationary Start: In this situation, the car is usually in "P" (Park) gear, which provides braking force. Therefore, pressing the brake isn't required to start the car. However, from a safety perspective, pressing the brake while starting is a good habit. 2. Moving Off: When starting at a traffic light or preparing to drive, pressing the brake is necessary. This is because the car needs power to move, and most automatic transmission models have a lock mechanism when shifting from "P" to "R" (Reverse) or "N" (Neutral) gear. You must press the brake to successfully shift gears. Thus, if the car is about to move, pressing the brake first is essential.

Can a C2 license drive C3 and C4 vehicles?

Yes. Small car C1: Small and micro passenger vehicles as well as light and micro cargo vehicles; light, small, and micro special-purpose vehicles. Small passenger vehicles with fewer than 9 seats and a maximum design total mass of ≤4500kg. Small automatic transmission car C2: Small and micro automatic transmission passenger vehicles as well as light and micro automatic transmission cargo vehicles. Small passenger vehicles with fewer than 9 seats and a maximum design total mass of ≤4500kg. Low-speed cargo vehicle C3: Low-speed cargo vehicles (originally four-wheel agricultural transport vehicles). Maximum design speed ≤70km/h, and maximum design total mass ≤4500kg.

What is the function of a motorcycle buzzer?

Motorcycles are equipped with buzzers to remind riders not to forget to turn off the turn signals. Most motorcycle turn signal buzzers are integrated with the flasher unit and cannot be removed separately. Function of turn signals: Turn signals are controlled by electronic devices, but they still use sound to simulate the relay. When a motor vehicle is turning, the turn signals are activated to indicate that they are flashing, serving as important indicators to alert surrounding vehicles and pedestrians. Types of turn signals: They can mainly be divided into three types: resistance wire type, capacitor type, and electronic type. The resistance wire type can further be divided into hot wire type (electrothermal) and vane type (spring-loaded), while the electronic type can be subdivided into hybrid type (with contact relays and electronic components) and fully electronic type (without relays).

What causes skidding after installing ABS?

The reasons for skidding after installing ABS include unbalanced braking force on the left and right sides, and cracked rubber bushings of chassis components. What is ABS: ABS, short for Antilock Brake System, functions by automatically controlling the braking force during vehicle braking to prevent wheel lock-up. It maintains the wheels in a state of rolling and sliding (with a slip ratio of around 20%) to ensure maximum traction between the tires and the road surface. Functions of ABS: Maximize the effectiveness of the brakes, reducing braking time and distance. Effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability. Allow steering during emergency braking, providing good steering control. Avoid severe friction between the tires and the road surface, reducing tire wear.

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