What causes unstable idle speed when the air conditioning is on in a classic Focus?

Does the Mercedes-Benz C-Class have a station wagon version?

The Mercedes-Benz C-Class does have a station wagon version. Here are the specific details of the Mercedes-Benz C-Class: 1. In terms of body dimensions, the new C-Class station wagon has a length, width, and height of 4729mm, 1810mm, and 1462mm respectively, with a wheelbase of 2840mm. 2. The highlight of this station wagon is the design of the rear end, featuring a sleek body and classic window styling that stands out. From the side view, the design of this car appears more refined compared to the sedan version. 3. The Mercedes-Benz C-Class station wagon is equipped with headlights featuring multi-beam LED technology, which continuously calculates the ideal light pattern to provide precise high-beam road illumination in all directions while avoiding unnecessary glare for other drivers.

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Can a Roof Rack Be Installed on a Sedan?

It is possible to install a roof rack on a sedan. According to the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China," Article 54, the height of cargo loaded on the roof rack of a passenger vehicle must not exceed 0.5 meters from the top of the vehicle. Additionally, the load must not exceed the maximum carrying capacity specified in the vehicle's registration certificate, and the length and width of the cargo must not extend beyond the vehicle body. Further details are as follows: 1. For heavy and medium-duty trucks and semi-trailers, the height of the cargo must not exceed 4 meters from the ground, and for vehicles transporting containers, the height must not exceed 4.2 meters. 2. For other motor vehicles carrying cargo, the height must not exceed 2.5 meters from the ground. 3. For motorcycles, the height of the cargo must not exceed 1.5 meters from the ground, and the length must not exceed the body by more than 0.2 meters. For two-wheeled motorcycles, the width of the cargo must not extend more than 0.15 meters beyond the handlebars on either side. For three-wheeled motorcycles, the width of the cargo must not exceed the width of the body. 4. Passenger vehicles are not allowed to carry cargo except on external roof racks or in built-in luggage compartments. The height of cargo on the roof rack of a passenger vehicle must not exceed 0.5 meters from the top of the vehicle or 4 meters from the ground.

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Is it mandatory to keep a fire extinguisher in the car?

According to relevant regulations: medium-sized and above passenger vehicles, as well as hazardous goods transport vehicles, must be equipped with valid fire extinguishers and firefighting equipment. Failure to comply will result in a warning or a fine ranging from 20 to 200 yuan. Although there are no strict requirements for private cars to carry fire extinguishers, during annual vehicle inspections, a fire extinguisher must be present in the car; otherwise, the inspection will not be passed. Here are some considerations for choosing a car fire extinguisher: 1. Dry powder fire extinguishers and water-based fire extinguishers are the best choices for cars. Dry powder fire extinguishers are fast and effective, inexpensive, and widely applicable. 2. Water-based fire extinguishers can be further divided into water-based clean water extinguishers, water-based foam extinguishers, and water-based mist extinguishers. They are characterized by being dust-free, preventing suffocation, having excellent fire suppression effects, and being non-toxic and environmentally friendly.

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What does it mean when the ETC card displays 'Label Invalid' after insertion?

When the ETC displays 'Label Invalid,' it means the ETC electronic tag has not been activated. You need to take the ETC device to an ETC service center or ETC service outlet for inspection. If the invalidation is not caused by human factors, a simple secondary activation of the ETC will allow it to be used. ETC Installation Process: Upon receiving the device, first check if the ETC card and electronic tag (OBU) are damaged. Press the anti-tamper button on the back of the OBU; the red light will briefly turn on, and the OLED screen will display 'Label Invalid' or 'Please Insert Card,' indicating the device is functioning normally. Clean the front windshield to ensure the glass surface is smooth, clean, and dry. Then, peel off the adhesive backing of the OBU and attach it to the installation position. Press firmly for 2-3 minutes to remove any air bubbles. Insert the ETC card with the front facing the driver and the back facing the windshield, ensuring the chip is inserted into the OBU device. ETC Activation Method: Insert and remove the ETC card twice consecutively until the electronic tag screen displays 'Bluetooth On.' If 'Label Invalid' appears after two insertions and removals when the electronic tag is not attached, this is normal and does not affect activation. Alternatively, press the button on the top of the electronic tag to enable Bluetooth directly. Turn on your phone's Bluetooth and open the corresponding mobile app (usually with a download QR code on the electronic tag), then navigate to the device activation interface. Click 'Device Connection' and wait patiently for the 'Connection Successful' prompt. Once connected, upload a photo of the vehicle's front to complete the activation.

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What does vehicle auto hold mean?

Vehicle auto hold refers to an automatic braking function. After activating this function, for example when stopping at a traffic light, it is equivalent to not needing to pull the handbrake, simplifying operations by avoiding the use of manual or electronic parking brakes. For automatic transmission models, it also eliminates the need for frequent shifting between D to N or D to P. The auto hold function provides precise parking force through a slope sensor controlled by the system. During startup, the parking control unit calculates information from sensors such as clutch distance, clutch engagement speed, and throttle pedal position. When the driving force exceeds the running resistance, the parking brake is automatically released, allowing the car to start smoothly.

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What Components Make Up a Mechanical Steering System?

Mechanical steering systems consist of two main components: the rack-and-pinion steering mechanism and the hydraulic system. Modern mid-to-high-end sedans and heavy-duty vehicles commonly employ power steering systems, which not only enhance driving ease but also improve road safety. Maintenance of power steering systems primarily involves regular checks of the fluid level in the power steering reservoir. Power steering systems are developed by adding a power-assisted steering device that relies on engine output to the basic mechanical steering system. Passenger cars typically use rack-and-pinion power steering mechanisms. This type of steering gear features simple structure, high operational sensitivity, light steering effort, and requires no routine inspection or adjustment due to its fully enclosed design.

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What causes unstable idle speed when the air conditioning is on in a classic Focus?

Does the Mercedes-Benz C-Class have a station wagon version?

Can a Roof Rack Be Installed on a Sedan?

Is it mandatory to keep a fire extinguisher in the car?

What does it mean when the ETC card displays 'Label Invalid' after insertion?

What does vehicle auto hold mean?

What Components Make Up a Mechanical Steering System?

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How to Check Tire Size?

How to Identify the Maximum Speed Rating of Passenger Car Tires?

At how many kilometers should the first maintenance be done for a BMW?