Where is the OBD interface located on the Excelle?

Should the Old Tiguan Use 95 or 92 Octane Gasoline?

According to the official vehicle manual, the old Tiguan is recommended to use 95 octane gasoline. In addition to checking the suitable gasoline grade in the vehicle manual, the old Tiguan can also refer to the label on the fuel tank cap. Typically, the gasoline grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92 octane gasoline, while those with a ratio between 10.0-11.5 should use 95 octane gasoline. However, with the application of new technologies, the gasoline grade cannot be solely determined by the compression ratio. High compression ratios can also be adjusted to use lower-grade gasoline, as factors like ignition timing, turbocharging technology, and Atkinson cycle technology also play a role. Generally, the higher the gasoline grade, the higher the octane number and the better the anti-knock performance. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. If the old Tiguan occasionally uses the wrong gasoline grade, simply switch back to the correct grade after consumption. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles recommended to use lower-grade gasoline, using higher-grade gasoline will not cause damage, but the increased octane number may alter the fuel's ignition point, leading to delayed combustion in the engine. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles recommended to use higher-grade gasoline, using lower-grade gasoline can cause engine knocking. The significantly lower octane number reduces the fuel's ignition point, causing premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance will arise during the upward stroke. This resistance makes the engine run very unstably. If the knocking is mild, it may only increase noise without obvious engine damage. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, and in severe cases, cylinder scoring.

2

Share

What is the Difference Between 205 and 225 Tires?

Regarding the differences between 205 and 225 tires, the following is an introduction: The two tires have different section widths. The numbers 205 and 225 represent the tire's section widths of 205 and 225 millimeters, respectively. The section width of a 205 tire is smaller than that of a 225 tire. The larger the contact area, the greater the friction. When used on drive wheels, the 225 tire will feel like it has more grip than the 205 tire. During rapid acceleration, the 225 tire responds more quickly than the 205 tire. In terms of acceleration and braking distance, the 225 tire accelerates slower than the 205 tire, but its braking distance is shorter than that of the 205 tire. In driving stability, the 225 tire is more stable than the 205 tire. The 225 tire has a wider tread and stronger lateral support, making it more stable during cornering and lane changes. When choosing tires, it's important to select ones that are suitable for your vehicle. For example, low-profile tires used on sports cars are not suitable for family cars, as they waste money and sacrifice comfort. In addition to the model, tires are also marked with the following common data: Tire cord material: Represented by Chinese pinyin, such as M for cotton cord, R for rayon cord, N for nylon cord, G for steel cord, and ZG for steel radial cord tires. Speed rating: Indicates the maximum speed at which the tire can carry a specified load under specified conditions. Letters A to Z represent certified speed ratings from 4.8 km/h to 300 km/h. Commonly used speed ratings include: Q: 160 km/h; H: 210 km/h; V: 240 km/h; W: 270 km/h; Y: 300 km/h; Rim specification: Indicates the rim specification compatible with the tire for practical use, such as: standard rim 5.00F.

4

0

Share

What is the battery life of the BAIC EX360?

The battery life of the BAIC EX360 is 600,000 kilometers. Here are some related introductions about automotive batteries: Precautions for battery replacement: Visually inspect the casing for cracks, corrosion, or signs of burning; use a voltmeter to measure the voltage between the casing and the ground, ensuring it does not exceed 20V, as higher voltages pose an electric shock risk; after installing a new battery, use Mercedes-Benz specialized software to perform a battery test run. Precautions for automotive battery maintenance: Avoid parking the car in open parking lots for extended periods. If long-term parking is necessary, remove and take the battery to prevent freezing damage; automotive batteries should be charged regularly. If left unused for a long time, the battery will gradually self-discharge and eventually become unusable. Therefore, start the car periodically to charge the battery.

18

3

Share

Should You Apply Throttle When Shifting Gears in a Manual Transmission?

When shifting gears in a manual transmission, you should not apply throttle as it increases fuel consumption. Instead, release the accelerator pedal. Gear Shifting Technical Requirements: Master the appropriate timing for gear shifts, meaning you should neither upshift too early nor downshift too late; the coordination between the clutch pedal, accelerator pedal, and gear lever must be correct and harmonious, with precise positioning; after engaging a new gear, release the clutch pedal promptly and smoothly. Manual Transmission Gear Shifting: For manual transmission vehicles, the importance of the clutch cannot be overlooked for smooth driving. Except for starting the car, shifting gears, and low-speed braking, which require pressing the clutch pedal, avoid unnecessarily depressing the clutch or resting your foot on the clutch pedal at other times.

6

0

Share

What Causes the Highlander's Anti-Theft Alarm to Sound Automatically?

Highlander's anti-theft alarm sounding automatically is due to wiring faults or excessive sensitivity. The solutions for wiring faults and excessive sensitivity are as follows: Solutions for wiring faults: Timely inspection, repair, or replacement is necessary. However, whether it's checking the wiring or replacing the alarm, it's best left to professionals, as this is beyond the scope of DIY solutions. Additionally, the system integrates many wiring distributions. If installed unprofessionally or if the wiring is reversed, the worst-case scenario could render the anti-theft device unusable or even burn out the vehicle's components. Solutions for excessive sensitivity: Locate the main unit of the anti-theft alarm, typically found under the steering wheel or behind the A-pillar trim panel. Then, slightly adjust the sensitivity adjustment knob. However, avoid setting it too low, as this would significantly reduce the vehicle's anti-theft effectiveness.

17

1

Share

What is the purpose of a spare tire?

The purpose of a spare tire is to replace a damaged, flat, or blown-out tire, allowing the vehicle to continue driving safely within a limited speed range to a repair facility. Spare tires refer to the backup tires for cars, usually matching the specifications of the original tires. However, some vehicles use spare tires with special-colored rims, compact spares, foldable spares, or run-flat tires to remind owners to promptly inspect and replace faulty tires. Spare tires typically have a lower maximum speed limit than standard tires, and it is advisable to replace them with standard tires as soon as possible after reaching the destination. This is often indicated with prominent multilingual labels. Depending on the vehicle model, spare tires are usually placed in one of the following locations: under the trunk floor, mounted beneath the rear of the car, or attached to the exterior of the trunk door. For SUV models, spare tires are mostly mounted beneath the rear or attached to the exterior of the trunk door. Types of spare tires: Full-size spare tire: A full-size spare matches the specifications of the other four tires and can replace any temporarily or permanently unusable tire. Non-full-size spare tire: This type of spare has a slightly smaller diameter and width compared to the other four tires. It can only be used temporarily, must be installed on non-drive wheels, and has a maximum speed limit of 80 km/h. Run-flat tire: Also known as a safety tire (run-flat tire), these are commonly referred to as "anti-blowout tires" or, more accurately, "tires that can run while flat." Unlike regular tires, run-flat tires do not lose air or lose it very slowly when punctured, maintaining their shape and keeping the tire bead securely on the rim. This allows the car to continue driving for an extended period or temporarily to a repair station. Vehicles equipped with these tires do not need to carry a spare tire, effectively integrating the spare function into the four main tires. Precautions: Regular inspection: Check tire pressure, wear, and cracks. Replace tires before the tread wears down to the wear indicator line.

1

0

Share

Where is the OBD interface located on the Excelle?

Should the Old Tiguan Use 95 or 92 Octane Gasoline?

What is the Difference Between 205 and 225 Tires?

What is the battery life of the BAIC EX360?

Should You Apply Throttle When Shifting Gears in a Manual Transmission?

What Causes the Highlander's Anti-Theft Alarm to Sound Automatically?

What is the purpose of a spare tire?

Will the fault code indicating low efficiency of the three-way catalytic converter affect the power?

What are the requirements for driving a cement tanker?

Do Volkswagen cars have anti-collision beams?

What is the Impact of Motorcycle Aspect Ratio?