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What is the difference between autonomous driving levels L1 and L2?

1 Answers
MadelineLynn
07/29/25 12:55pm
L2-level autonomous driving technology offers a higher degree of automation than L1, requiring less human intervention. The specific differences are as follows: 1. Cars equipped with L1-level autonomous driving technology require the driver to perform all operations, although they may receive assistance in certain situations. 2. Cars equipped with L2-level autonomous driving technology can handle some basic driving tasks, but the driver must remain attentive and be ready to take control at any moment. 3. Cars with L2-level autonomous driving technology can perform functions such as automatic parking, acceleration, deceleration, following other vehicles, and lane keeping. When driving on well-maintained highways, a car with L2-level autonomous driving technology may require almost no input from the driver.
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Is the Touareg from SAIC or FAW?

The Touareg is an imported vehicle and does not belong to either SAIC or FAW. Here are the relevant details: 1. Touareg: The Touareg is a German Volkswagen-produced SUV. The name 'Touareg' comes from the Tuareg people, who live around the Sahara Desert. Volkswagen has two SUVs: the Tiguan and the Touareg. The Tiguan is produced by Shanghai Volkswagen, is relatively smaller, and priced around 200,000 RMB. The Touareg, on the other hand, is an imported vehicle, much larger with a more rounded front end, and starts at 600,000 RMB. 2. Performance: The Touareg's off-road performance can only be described as 'excellent.' It features a double-wishbone suspension at both the front and rear, ensuring maximum tire contact with the ground. It also uses electronically controlled air suspension, allowing the suspension to automatically adjust its travel based on individual wheel conditions, even on highly uneven terrain. As a result, the ground clearance can vary from 160mm to 300mm.
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Where is the video playback button on the Geely Emgrand car?

The video playback button on the Geely Emgrand is located on the main screen of the vehicle's infotainment system. Below are the specific details about the Geely Emgrand: 1. Main Models: Geely Emgrand is a sub-brand under the parent brand Geely, primarily focusing on the production of B-segment sedans. 2. Emission Standards: It is equipped with Geely's new 4G-N series D-CVVT gasoline engine, featuring an intake and exhaust dual variable valve timing system, and meets the Euro V emission standard. 3. Configuration: The vehicle's electronic system is sourced from Siemens of Germany, the chassis tuning is done by PDE of the Netherlands, the control module uses Bosch M7.8 system from Germany, and it is powered by a 1.8-liter CVVT engine with a power output of 57.2 kilowatts per liter.
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How many types of Mobil fully synthetic engine oil are there?

There are three types of Mobil fully synthetic engine oil, specifically 0w40, 5w30, and 5w40. Here is some extended information: 1. Fully synthetic engine oil: Fully synthetic engine oil is produced by chemically decomposing various natural substances and then synthesizing them with other materials. The advantages of fully synthetic engine oil include high cleanliness, strong fluidity, excellent cooling effect, outstanding oxidation resistance, and a longer replacement cycle, typically around 1 year or 10,000 kilometers. Vehicles with turbocharged engines are recommended to use fully synthetic engine oil. 2. Semi-synthetic engine oil: Semi-synthetic engine oil is a blend of synthetic and mineral oil, with a ratio of 4:6 between mineral oil and synthetic oil. The characteristics of semi-synthetic engine oil include the advantages of synthetic oil while being cheaper than fully synthetic oil. However, its performance is weaker than fully synthetic oil in all aspects, only having an advantage in price. The replacement cycle is also slightly shorter than fully synthetic oil, around 7,000-8,000 kilometers or 8 months. Semi-synthetic engine oil is more suitable for naturally aspirated engines.
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What are the reasons for the starter not working?

The reasons for the starter not working are: 1. Insufficient battery charge; 2. Loose or detached starter terminals, switch or solenoid failure; 3. Worn brushes or improper brush alignment, weak springs; 4. Short circuit or open circuit in the field coil or armature coil; 5. Dirty commutator or protruding mica causing poor brush-to-commutator contact. The solutions for a non-working starter are: 1. Charge or replace the battery; 2. Clean the wiring and tighten the terminals; 3. Clean the brush surface or replace the brushes; 4. Repair or replace the assembly; 5. Replace with the recommended suitable engine oil. Precautions for starter use include: 1. Shift the transmission into neutral before starting; 2. Do not operate the starter for more than 5 seconds at a time, with intervals of at least 15 seconds between attempts; 3. Immediately release the ignition switch after the engine starts to cut off the starter and stop its operation; 4. Turn the key back immediately after the engine starts to allow the starter's drive pinion to disengage promptly.
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How many kilometers is the break-in period for the Volkswagen CC?

The break-in period for the Volkswagen CC is 5,000 kilometers, which is before the first free maintenance service. Precautions during the break-in period: 1. Avoid emergency braking: During the break-in period, avoid emergency braking, do not exceed a speed of 120 km/h, and avoid full load. 2. Avoid driving in N gear: During daily driving, use a variety of throttle positions to allow the transmission to shift more frequently. During both the break-in period and normal use, try to avoid driving in N gear as it can damage the transmission. This is because in N gear, the lubrication of the transmission oil is at its worst and is unsuitable for high-speed operation. 3. Keep speed below 120 km/h: During the break-in period, do not exceed 120 km/h on the highway. After the break-in period, it is advisable to drive at higher speeds occasionally to help burn off carbon deposits in the cylinders. Occasionally accelerating hard can also be beneficial for the car.
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Why Does the Newly Replaced Brake Pads Make Noise at Low Speed?

Brake pad noise can affect normal driving. The reasons and solutions for noise from newly replaced brake pads are as follows: 1. Noise occurs when braking, but not when not braking: This situation is caused by the wear between the brake pads and the brake disc. After prolonged use, the old brake pads and brake disc have formed a certain complementary shape. When new brake pads are installed, the edges of the brake pads may not make even contact with the brake disc, leading to friction and noise. 2. Issues with brake pad material: If non-standard brake pads are used, the larger particles in the material can easily cause noise during braking. 3. Solutions: For the first situation, the edges of the brake pads need to be smoothed to ensure no friction occurs between the brake pads and the brake disc, thus eliminating the noise. If this doesn't work well, a brake disc repair machine can be used to grind and polish the brake disc to solve the problem. For quality issues, it is necessary to replace them with good-quality brake pads.
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