What are the requirements for the Subject 1 exam?

How to Start a Mercedes-Benz When the Key Fob Battery is Dead?

Mercedes-Benz key fob battery is dead vehicle starting method is: place the remote key on the induction key position, then press the start button to start the engine. It should be noted that the induction key position is on the steering column below the car steering wheel. If the car key battery is dead, it is recommended to replace the battery immediately to avoid delaying the owner's normal use of the car. Taking the Mercedes-Benz G55 AMG as an example, this car is a full-size seven-seat SUV of the Mercedes-Benz G-Class, with body dimensions of 4668mm in length, 1774mm in width, and 1952mm in height, and a wheelbase of 2850mm. The car's front suspension uses a double-wishbone independent suspension, the rear suspension uses a solid axle non-independent suspension, and is equipped with a 4.0L twin-turbocharged engine. The engine is matched with a 9-speed automatic transmission, and the driving method is front-engine four-wheel drive.

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What is the battery model for the Emgrand GS car key?

The battery model for the Emgrand GS car key is a 3V CR2025. The method to replace the battery is: locate the "open" mark on the key, next to which there is a small notch. Insert a flat-head screwdriver into the notch and rotate the key cover counterclockwise to open it, then take out the button battery for replacement. The Emgrand GS is a model under the Geely Group, classified as a crossover SUV. The vehicle's dimensions are 4440mm in length, 1833mm in width, and 1560mm in height, with a wheelbase of 2700mm. In terms of appearance, the Emgrand GS largely follows the design concept of the Emgrand Cross concept car, featuring the Geely family-style ripple grille at the front and equipped with LED daytime running lights.

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How to Replace the Battery in GAC Trumpchi GS4 Remote Key?

The method to replace the battery in the GAC Trumpchi GS4 remote key is as follows: locate the gap on the side of the remote key, insert a thin metal piece into the gap, and rotate the metal piece to open the remote key shell. Once opened, you can see the battery compartment on the back cover. Follow the instructions to remove the old battery and replace it with a new one, then close the back cover to complete the installation. The Trumpchi GS4 has multiple models, and the body dimensions vary among them. The manual comfort version measures 4545mm in length, 1856mm in width, and 1668mm in height, with a wheelbase of 2680mm. For all other models, the dimensions are 4545mm in length, 1856mm in width, and 1700mm in height, with the same wheelbase of 2680mm.

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Can car wheel hubs be modified in color?

Car wheel hubs can be modified in color. There are no specific regulations regarding the color of wheel hubs in the relevant rules, and the color of wheel hubs is not included in the 30% color category of the entire vehicle. Therefore, changing the color of wheel hubs will not affect road legality or annual inspections. Wheel hubs refer to the central part of the wheel where the axle is installed, commonly known as the rim or steel ring. Wheel hubs are prone to accumulating dirt, and if not cleaned for a long time, they may corrode and deform, posing safety hazards. Therefore, special attention should be paid to the maintenance of wheel hubs. When a car is in motion, the tires and wheel hubs generate a significant amount of heat. If this heat accumulates on the wheel hubs, it can affect braking performance, leading to wear on the brakes, wheel hubs, and tires. Aluminum alloy wheel hubs can dissipate this heat into the air, helping to cool the tires and brakes and increasing the vehicle's safety factor.

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What engine does the Lifan 820 car have?

Lifan 820 engine is a domestically produced engine, manufactured by Lifan Engine Company. The 1.8L version of the Lifan 820 has an engine model number LFB479Q, with a maximum power of 98kW and a maximum torque of 168 Nm. The 2.4L version has an engine model number LF489Q, with a maximum power of 123kW and a maximum torque of 226 Nm. For daily maintenance of the Lifan 820 engine, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, SD--SF grade gasoline engine oil should be selected based on the additional equipment of the intake and exhaust systems and usage conditions; for diesel engines, CB--CD grade diesel engine oil should be selected according to mechanical load, with the selection standard not lower than the manufacturer's specified requirements. Regularly change the oil and filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, performance deteriorates, causing various problems for the engine. To avoid failures, change the oil regularly based on usage conditions and keep the oil level moderate. When oil passes through the fine holes of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter is clogged and oil cannot pass through the filter element, the filter element may burst or the safety valve may open, allowing oil to bypass through the bypass valve, bringing contaminants back to the lubrication area, accelerating engine wear and increasing internal pollution. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal particles from component wear to form sludge. Small amounts remain suspended in the oil, while larger amounts precipitate, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures normal engine operation but also extends the overall lifespan of the radiator and engine.

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What to Do When the Car Door Won't Open with a Mechanical Key?

Solutions for when the car door won't open with a mechanical key: 1. Inject some engine oil into the lock cylinder to lubricate it and then try to open it; 2. Check if the car is in anti-theft lock mode, as the mechanical key cannot open the door in this state—it needs to be deactivated first; 3. Replace the lock cylinder; 4. Use the remote key to open the door; 5. Contact a professional for inspection and repair. It's important to note that in most cars, the central locking mechanism uses a mechanical latch to secure the door. If the door lock isn't engaged, the door can be opened using the exterior door handle or the interior door handle.

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What are the requirements for the Subject 1 exam?

How to Start a Mercedes-Benz When the Key Fob Battery is Dead?

What is the battery model for the Emgrand GS car key?

How to Replace the Battery in GAC Trumpchi GS4 Remote Key?

Can car wheel hubs be modified in color?

What engine does the Lifan 820 car have?

What to Do When the Car Door Won't Open with a Mechanical Key?

How to Solve the EPC Fault in a Car?

What engine does Changan Oushang use?

Is the BMW 530 compliant with China VI emission standards?

How to Reset the Anti-Theft Light That Keeps Flashing?