How to Assess Damages for Multiple Old Scratches on a Car?

What Causes Abnormal Noise When Releasing the Brake?

Abnormal noise when releasing the brake can be caused by slow brake release speed, rust adhesion, or metal foreign object friction. Below are detailed explanations: Slow brake release speed: When the brake pedal is slowly released, the engine already has sufficient power to drive the car forward, but the brake is not fully disengaged. As a result, the moving wheels are held back by the brake system, naturally producing abnormal noise. Rust adhesion: This usually occurs after driving in rainy weather and then leaving the car unused for several days. The brake disc and brake pads rust and stick together, causing abnormal noise when starting the car again. This can be resolved by applying butter or specialized lubricant at the connection between the brake pads and brake calipers at a repair shop. Metal foreign object friction: Many brake pads nowadays are made of semi-metallic materials, containing a large number of metal fibers. Sometimes, metal particles can form, producing a harsh noise when pressing or releasing the brake. This condition usually disappears after driving for a while. If it persists, it may indicate poor manufacturing quality, and it is recommended that the owner replace the brake pads promptly to avoid scratching the brake disc.

12

0

Share

What does bar mean on a car?

Bar on a car is a commonly used unit for tire pressure, where 1 bar equals 100 kPa (kilopascal). Both bar and kPa are units of tire pressure commonly seen on vehicle tire pressure gauges. The standard tire pressure for most car wheels ranges between 2.2 bar and 2.5 bar. If a tire's pressure drops below 1.8 bar, it indicates air leakage and the vehicle should not be driven. In the absence of a pressure gauge after a tire pressure warning, you can visually inspect the contact area between the tire tread and the ground to determine which tire is low on air. If the air loss is not significant, the vehicle can still be driven, but the speed should not exceed 50 km/h.

19

1

Share

How to turn on the air conditioning in the new Lavida?

The method to turn on the air conditioning in the new Lavida: 1. Press the brake pedal to start the engine; 2. Turn the key to the ST position to start the engine until the idle speed stabilizes; 3. Turn the fan speed knob to the right; 4. Rotate the temperature control knob to the left to activate the cooling mode; 5. Press the AC button to turn on the compressor; 6. Press the recirculation button to activate the interior air circulation mode. The Lavida is a compact car produced by SAIC Volkswagen. The vehicle's dimensions are 4670 mm in length, 1806 mm in width, and 1474 mm in height, with a wheelbase of 2688 mm. It features front-wheel drive. In terms of suspension, this car is equipped with a MacPherson strut front suspension and a torsion beam rear suspension.

2

1

Share

At what depth of sidewall scratches should tires be replaced?

Tires should be replaced when sidewall scratches reach a depth of 4mm. The rubber thickness on tire sidewalls generally does not exceed 1cm. If the scratch is not severe and hasn't damaged the tire's cord layer, it may continue to be used even if exceeding 4mm. However, if the internal cord layer in the sidewall is compromised, the tire must be replaced even if the scratch is under 4mm, otherwise there's a risk of blowout. Tire wear correlates with vehicle speed - higher speeds cause more severe wear. Road surface quality also directly affects friction between tires and ground. Poor road conditions increase tire-ground sliding, accelerating tire wear.

13

0

Share

What Causes a Slight Vibration Sensation When Touching the Steering Wheel?

Steering wheel touching slight vibration sensation reasons: It may be caused by poor engine smoothness or faulty engine mounts. There are engine mounts at the connection points between the engine and the frame. When these mounts age, engine vibrations can transfer to the vehicle body, potentially causing a slight vibration sensation when touching the steering wheel. Some engines do not operate with perfect smoothness and may produce slight vibrations during operation, which is normal. The steering wheel is a wheel-shaped device used to control the direction of cars, ships, airplanes, etc. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque, which is then transmitted to the steering shaft. The gear system introduced between the driver and the wheels by the steering wheel operates flexibly and isolates severe vibrations from the road.

9

4

Share

What are the steps for adding engine oil to a Volkswagen Passat?

Volkswagen Passat adding engine oil steps are: unscrew the oil cap counterclockwise, pour the prepared engine oil into the engine until the oil level reaches the normal position when checked with the dipstick, then reinstall the oil cap and close the hood to complete the process. The Volkswagen Passat measures 4870mm in length, 1834mm in width, and 1472mm in height, with a wheelbase of 2803mm. The Passat PHEV is equipped with a plug-in hybrid system consisting of a 1.4T engine, an electric motor, and a ternary lithium battery pack. The 1.4T engine delivers a maximum power of 150 horsepower, while the electric motor provides 116 horsepower, resulting in a combined maximum power output of 211 horsepower and a peak torque of 400 Nm.

2

Share

How to Assess Damages for Multiple Old Scratches on a Car?

What Causes Abnormal Noise When Releasing the Brake?

What does bar mean on a car?

How to turn on the air conditioning in the new Lavida?

At what depth of sidewall scratches should tires be replaced?

What Causes a Slight Vibration Sensation When Touching the Steering Wheel?

What are the steps for adding engine oil to a Volkswagen Passat?

What is the material of the Besturn X80 spark plug?

What does fuel consumption rate mean?

Can a Dash Cam Work Without a Memory Card?

Can a car run at 100 km/h on the highway during the break-in period?