Where is the Mercedes key sensor located?

Is It Normal for a Car to Run 100,000 Kilometers in a Year?

It is normal for a car to run 100,000 kilometers in a year. Introduction to Car Odometer: A car odometer is a digital instrument. It operates through the engagement of the transmission gear of the counter drum wheel with the worm gear on the speedometer drive shaft, causing the counter drum wheel to rotate. Like the speedometer, modern odometers also include electronic odometers, which obtain mileage signals from speed sensors. The accumulated mileage data of electronic odometers is stored in non-volatile memory, allowing the data to be preserved even without power. Classification of Car Speedometers and Odometers: Car speedometers and odometers are divided into two types: roller counters and dot-matrix LCD screens. They consist of a speedometer that indicates the car's driving speed and an odometer that records the distance traveled by the car. Both are housed in a common casing and driven by the same shaft.

10

2

Share

Why does shifting from P to R make a clunking sound?

Shifting from P to R with abnormal noise may be due to reasons such as solenoid valve damage or oil passage blockage. Solenoid valve damage: Solenoid valve damage is a significant cause of jerking. A simple distinction is that when it occurs occasionally, there is no discernible pattern. However, when it happens consistently at a certain speed or when shifting to a specific gear (e.g., from 2nd to 3rd gear), it indicates a fixed issue at that speed. Mud clogging the oil passage: If the transmission oil circulating inside the transmission has mud clogging the oil passages in the valve body, it can cause stumbling issues, leading to a series of transmission problems such as overheating, impact, and slipping.

18

2

Share

How to Solve Motorcycle Backfiring When Throttle is Released?

Motorcycle backfiring when the throttle is released can be resolved by replacing the spark plug. Related explanations: 1. Causes: Motorcycle backfiring upon throttle release is generally caused by an overly rich air-fuel mixture due to various reasons, such as a clogged air filter, improper carburetor mixture adjustment, incorrect use of the choke, or excessively high fuel level. 2. Spark Plug: The spark plug (spark-plugs), commonly known as the sparking plug, functions to discharge the high-voltage pulse electricity sent from the high-tension lead, breaking down the air between the two electrodes to generate an electric spark, thereby igniting the air-fuel mixture in the cylinder. Main types include: standard spark plugs, extended insulator spark plugs, electrode spark plugs, seat-type spark plugs, pole-type spark plugs, and surface-gap spark plugs, among others.

18

2

Share

Is 250 kPa Too High for Winter Tire Pressure?

Winter tire pressure of 250 kPa is not too high. Tire pressure of 250 kPa: Generally, the normal tire pressure for small cars is 250 kPa, which can meet normal usage requirements. Considering thermal expansion and contraction, the pressure can be increased to 260 kPa in winter. Therefore, a winter tire pressure of 250 kPa is not too high. Meaning of tire pressure: Tire pressure refers to the air pressure inside the tire and is the blood pressure of a car. The level of tire pressure plays a crucial role in the performance and power of the vehicle. Tire pressure is the lifeline of the tire; both excessively high and low pressures will shorten the tire's lifespan. Low tire pressure increases tire body deformation and is prone to causing cracks on the tire side. High pressure will excessively stretch and deform the tire cords, reducing the elasticity of the tire body.

15

2

Share

What is the reason for transmission noise after replacing the clutch plate?

Transmission noise after replacing the clutch plate is caused by the weight distribution issue of the new clutch plate. When the hydraulic servo system of the clutch or the transmission computer cannot accurately control the separation and engagement of gears, noise and jerking will occur. Weight distribution issue of the new clutch plate: The basic structure of a dual-clutch transmission is actually quite similar to that of a manual transmission, as both use gear transmission. However, the difference lies in the fact that a dual-clutch transmission is equipped with two clutches, each independently connected to a set of gears, controlling odd-numbered gears and even-numbered gears respectively. If intermittent collision sounds occur when pressing or releasing the clutch pedal, it indicates axial movement of the release bearing, and the release bearing return spring should be replaced. Function of the automotive transmission: To change the transmission ratio and expand the torque and speed range of the driving wheels. Under the condition that the engine's rotation direction remains unchanged, the vehicle can move backward. Using neutral gear to interrupt power transmission allows the engine to start and shift gears, facilitating transmission shifting or power output. The transmission consists of a transmission mechanism and a control mechanism. If necessary, a power take-off can also be installed. During vehicle operation, to adapt to different working conditions, the vehicle's driving force and speed need to vary within a certain range. Since the existing engine's torque and speed variation range cannot meet this requirement, a transmission is installed.

7

2

Share

Why does the Tiguan's one-button start fail to ignite?

Tiguan's one-button start failure to ignite may be due to a dead key fob battery or the gear not being in the P position. Relevant information about the Volkswagen Tiguan is as follows: 1. Models: The Volkswagen Tiguan offers a total of 7 models across 4 versions: Urban, Trendline, Elite, and Flagship. 2. Powertrain: Equipped with Volkswagen's flagship 1.8TSI and 2.0TSI engines, it delivers excellent performance in both power and fuel efficiency. Paired with a 6-speed manual transmission or an Aisin 6-speed automatic transmission, it maximizes power output while maintaining eco-friendly emissions. 3. Dimensions: Compared to its prototype, the Volkswagen Tiguan, the Tiguan's length has been increased by 68mm, and its wheelbase reaches 2684mm, placing it in the upper-middle level among its peers, aiming to meet the usage needs of Chinese consumers.

14

5

Share

Where is the Mercedes key sensor located?

Is It Normal for a Car to Run 100,000 Kilometers in a Year?

Why does shifting from P to R make a clunking sound?

How to Solve Motorcycle Backfiring When Throttle is Released?

Is 250 kPa Too High for Winter Tire Pressure?

What is the reason for transmission noise after replacing the clutch plate?

Why does the Tiguan's one-button start fail to ignite?

Can I Take Subject Four If I Failed Subject Three?

How many hours per day for Subject 1 check-in?

What does throttle mean in a car?

Is a Rusty Steering Column Definitely a Sign of a Flood-Damaged Car?