What's the reason for no response when using the car's one-button start?

Is Car Brake Pad Rust a Serious Issue?

When rust appears on car brake pads, it should be addressed promptly. Here is more information: 1. Slight rust on brake pads. Most brake discs are made of cast iron. In humid or rainy weather, combined with prolonged exposure to wind and sun, if the vehicle is parked for an extended period, rust will naturally form on the surface. If the rust is minor and has not corroded the brake disc, simply lightly applying the brakes after starting the car can easily remove the rust through the friction between the brake pads and the disc. 2. Severe rust on brake pads. If the rust is severe, it is best to take the vehicle to a repair shop, remove the brake disc, and thoroughly sand off the rust with sandpaper. Check the brake pad surface for any abnormalities, reinstall properly, and conduct a road test. Drive at 70 km/h on a flat road and perform multiple braking tests to ensure no abnormalities. If vibrations persist, it indicates unevenness on the brake disc surface, requiring further polishing or replacement as necessary.

20

3

Share

Deadline for China 5 Vehicle Registration?

After the implementation of the China 6 standard, the registration of China 5 vehicles was discontinued. The deadline for China 5 vehicle registration varies depending on the implementation of the China 6 standard in different regions. The following are the differences between China 5 and China 6 vehicles: 1. Different carbon monoxide emission requirements: China 5 vehicles have a carbon monoxide content of 1000mg per kilometer; China 6 vehicles have a carbon monoxide content of 500mg per kilometer. 2. Different letter representations: China 5 is represented by V; China 6 is represented by VI. 3. Different issuing departments: The China 5 standard was issued by the Ministry of Environmental Protection; the China 6 standard was issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine. 4. Different control levels: The emission control level of the China 5 standard is equivalent to the fifth-stage emission standard currently implemented in Europe; the emission control level of the China 6 standard is a standard formulated to prevent and control environmental pollution caused by exhaust emissions from compression-ignition and gas-fueled ignition engine vehicles and to protect human health.

1

5

Share

How to Remove Car Emblems Without Leaving Marks?

About the introduction of removing car emblems without leaving marks as follows: 1. You can use hot water. Prepare a pot of hot water and slowly pour it over the emblem. The emblem is attached to the car body with industrial adhesive, and hot water will cause the industrial adhesive to lose its stickiness, thus the emblem will fall off. 2. You can use a hair dryer. Use the hot air from the hair dryer to blow on the emblem. After heating, the industrial adhesive will temporarily lose its stickiness, and the emblem can be easily removed. 3. Use essential balm. Essential balm has the effect of dissolving industrial adhesive. By slowly soaking and dissolving with essential balm, the emblem can be removed.

4

2

Share

How to Test a Relay?

Testing a relay involves the following methods: 1. Measure the coil resistance: Use a multimeter set to the R×10Ω range to measure the resistance of the relay coil, which helps determine if the coil is open. The resistance of the relay coil is closely related to its operating voltage and current. The operating voltage and current can be calculated based on the coil resistance. 2. Measure the contact resistance: Use the resistance range of the multimeter to measure the resistance between the normally closed contact and the moving contact, which should be 0; the resistance between the normally open contact and the moving contact should be infinite. This helps distinguish between the normally closed and normally open contacts. 3. Measure the pull-in voltage and current: Use an adjustable regulated power supply and an ammeter. Apply a voltage to the relay and monitor the current in the power circuit with the ammeter. Gradually increase the power supply voltage until the relay pulls in, then record the pull-in voltage and current. For accuracy, repeat the test several times and calculate the average. Measure the release voltage and current: Connect the test as described above. After the relay pulls in, gradually decrease the power supply voltage until the relay releases, then record the voltage and current. Repeat the test several times to obtain the average release voltage and current. Generally, the release voltage is about 10-50% of the pull-in voltage. If the release voltage is too small (less than 1/10 of the pull-in voltage), the relay cannot function properly, which may threaten circuit stability and reliability.

5

3

Share

How many kilometers can a car travel per hour?

A car's travel distance per hour depends on its actual speed. Generally, the average speed of a small car is 60KM/h. The driving conditions of cars with different displacements: 1. 1.6 displacement: The maximum speed of a 1.6 displacement car is 180KM/h, meaning it can travel up to 180 kilometers in an hour under optimal conditions. 2. 2.4 displacement: For a 2.4 displacement car, the maximum speed can reach 200KM/h, meaning it can travel up to 200 kilometers in an hour, also under unrestricted conditions.

11

1

Share

Which manufacturer produces Roewe's engines?

Different Roewe models are equipped with distinct engines. The 2.0T engine in Roewe iMAX8 is a newly developed engine by SAIC Motor, while the engines for Roewe RX5 are all manufactured at SAIC's Lingang factory, classified as domestically produced engines. The engine model used in Roewe iMAX8 is 20A4E, delivering a maximum horsepower of 234 hp, peak power of 172 kW at 5000-5500 rpm, and maximum torque of 360 N·m. The Roewe RX5 employs the 15C4E engine model, producing 181 hp maximum horsepower, 133 kW peak power at 5600 rpm, and 285 N·m peak torque. For daily maintenance of Roewe engines, the following methods are recommended: Use lubricating oil of appropriate quality grade. For gasoline engines, select SD-SF grade motor oil based on intake/exhaust system accessories and usage conditions; diesel engines should use CB-CD grade diesel oil according to mechanical load, with the selection standard meeting or exceeding manufacturer requirements. Regularly change engine oil and filters. All lubricating oils degrade during use. After certain mileage, deteriorated oil performance may cause various engine issues. To prevent malfunctions, change oil periodically according to usage conditions and maintain proper oil levels. As oil passes through filter pores, solid particles and viscous substances accumulate in the filter. A clogged filter may cause oil to bypass the element through safety valves, carrying contaminants back to lubrication areas and accelerating engine wear and internal pollution. Periodically clean the crankcase. During operation, unburned high-pressure gases, acids, moisture, sulfur and nitrogen oxides from combustion chambers enter the crankcase through piston ring-cylinder wall gaps, mixing with metal wear particles to form sludge. Suspended in small amounts but separating in quantity, this sludge can clog filters and oil passages, hindering engine lubrication and increasing wear. Regularly use radiator cleaner to flush the cooling system. Removing rust and scale deposits ensures proper engine operation while extending the lifespan of both radiator and engine.

11

2

Share

What's the reason for no response when using the car's one-button start?

Is Car Brake Pad Rust a Serious Issue?

Deadline for China 5 Vehicle Registration?

How to Remove Car Emblems Without Leaving Marks?

How to Test a Relay?

How many kilometers can a car travel per hour?

Which manufacturer produces Roewe's engines?

What Does Lifetime Maintenance for Car Purchase Mean?

How to Identify Run-Flat Tire Markings

How to Identify Genuine OEM Auto Parts?

What does the diamond-shaped dashed line on the road mean?