How to Use the Handbrake on Mercedes-Benz GLA200?

Can a Car Air Conditioner Be Powered by an External Source?

Car air conditioners cannot be powered by an external source. Here are some important considerations regarding car air conditioners: 1. Select the appropriate fan speed: During normal operation, to prevent excessive frosting on the evaporator and ensure the air conditioning system functions properly, the fan speed and temperature control should not be adjusted simultaneously. When driving below 25 km/h, set the fan speed to the low setting to avoid insufficient power generation and inadequate cooling. 2. Adjust the air direction: Based on the principle that cold air sinks and warm air rises, the correct adjustment is to direct the air vents upward when using the cooling function and downward when using the heating function. 3. Regularly start the air conditioner in winter: In warmer regions like Guangdong and Hainan, some car owners may not use the air conditioner throughout the winter. Prolonged disuse can lead to the aging of rubber seals and the drying out of lubricants on internal components. Regularly starting the air conditioner ensures that all parts are lubricated and maintained in good condition. Therefore, it is advisable to start the air conditioner every 1 to 3 weeks during winter.

15

1

Share

What are the differences between Mercedes-Benz S and Maybach S?

Mercedes-Benz S and Maybach S have the following differences: 1. In terms of body dimensions: The length, width, and height of the Mercedes-Maybach S are 5466*1899*1500mm, with a wheelbase of 3365mm, while the Mercedes-Benz S-Class measures 5283*1905*1500mm, with a wheelbase of 3165mm. Comparing the body dimensions of these two models, the Mercedes-Benz S has a smaller body size. The Maybach S-Class is essentially based on the Mercedes-Benz S-Class, simply put, it is an enlarged version of the Mercedes-Benz S-Class sedan. 2. In terms of power: The Mercedes-Benz S-Class offers two powertrain options, equipped with a 2.0T turbocharged engine and a 3.0T turbocharged engine, respectively. The Maybach S-Class offers three powertrain options, equipped with a 3.0T V6 twin-turbocharged engine, a 4.0T V8 twin-turbocharged engine, and a 6.0T V12 twin-turbocharged engine, respectively. This comparison clearly shows the significant difference in power configurations between the two. Relatively speaking, the Maybach S-Class has stronger power.

1

3

Share

What does the ramp mean in Subject 1?

Ramp is a road on the right side of the highway exit or entrance (generally 150-200 meters). After the entrance ramp is the acceleration lane, and the exit ramp is immediately after the deceleration lane. The speed in the ramp is generally required to be below 40km/h, and the speed in the acceleration lane should be rapidly increased to above 60km/h. The relevant introduction is as follows: 1. Content: Subject 1 refers to the driver's theoretical test, which is conducted at the vehicle management office and is a mandatory licensing test for driver's license applicants. The test content includes the most basic knowledge such as driving theory foundation, road safety laws and regulations, traffic signals, traffic rules, plus local regulations. The time of the driver's theoretical test is arranged by the local vehicle management office. 2. Driver's license test: Subject 1 is part of the teaching and examination syllabus for motor vehicle driver training. The examination part of this syllabus is divided into three subjects, which are organized by the traffic management department of the public security organ. The examination sequence is carried out in the order of Subject 1, Subject 2, and Subject 3. After passing the previous subject examination, you can participate in the next subject examination; if the previous subject examination is not passed, you will continue to take the examination for that subject.

17

1

Share

How to align with the dashed line on the slope in Subject 2?

Align the left water channel of the car's hood with the dashed line and ensure the car's side is parallel to the dashed line, so that the center of the steering wheel aligns with the dashed line on the road. The Subject 2 test includes reversing into a garage, parallel parking, stopping and starting on a slope, turning at a right angle, and driving along a curve. The details are as follows: 1. Positioning: The first step when going up the slope is to align with the right yellow line. The method is to align the one-third point of the right side of the engine cover with the yellow line on the road, indicating proper alignment. When stopping on the slope, observe the dot on the windshield wiper, the parking post, and your eyes forming a straight line, then stop once aligned. When pressing the brake with your right foot, press the clutch with your left foot and hold the brake steady. 2. Starting: When starting, slowly lift the clutch with your left foot. When the car body slightly vibrates and the hood rises a bit, quickly release the brake with your right foot while keeping the clutch steady with your left foot. Remember not to lift the clutch too much or too quickly when starting, as both can cause the car to stall.

4

Share

How Often Should a Car's Refrigerant Be Replenished?

Refrigerant in a car should be replenished every five to eight years. Here are some tips for selecting the right refrigerant: 1. Consider environmental requirements: Always choose refrigerants that comply with national environmental regulations. 2. Consider the cooling temperature requirements: Depending on the refrigerant temperature and cooling conditions, select high-temperature (low-pressure), medium-temperature (medium-pressure), or low-temperature (high-pressure) refrigerants. Typically, the standard evaporation temperature of the chosen refrigerant should be at least 10°C lower than the cooling temperature. Other factors to consider include the cooling conditions of the refrigeration system and the operating environment. The operating condensation pressure should not exceed the safe limits specified for the compressor. Since car air conditioning systems can only use outside air as the cooling medium, they are frequently affected by factors such as ambient temperature, wind speed, solar radiation, and heat radiation. These operating conditions necessitate the use of high-temperature (low-pressure) refrigerants, with R12 being the traditional choice. 3. Consider the properties of the refrigerant: Based on the thermodynamic, physical, and chemical properties of the refrigerant, opt for those that are non-toxic, non-explosive, and non-flammable.

12

3

Share

How to Adjust the Valve Clearance of Tiggo 3?

Tiggo 3 valve clearance adjustment method: 1. Preheat the engine until the coolant temperature reaches 80 degrees Celsius, open the timing mark inspection hole on the clutch housing and the cylinder head cover, and ensure that the cylinder head bolts are tightened to the specified torque; 2. Rotate the crankshaft to align the 0 mark on the flywheel with the mark line on the clutch housing, confirm that the curved surface of the intake and exhaust valve rocker arms of the first cylinder is in contact with the base circle of the camshaft cam, that is, the first cylinder piston is at the compression top dead center, and the valves are in the closed position at this time; 3. Loosen the lock nut 2 of the adjustment screw 1, use a screwdriver to turn the adjustment screw so that the gap A between the lower end face of the screw and the upper end face of the valve stem 3 is the specified clearance value, keep the screwdriver still, tighten the lock nut to the specified torque, and then use a feeler gauge to insert into gap A for rechecking. This way, the intake and exhaust valve clearances of the first cylinder can be adjusted; 4. Rotate the crankshaft clockwise. For a 4-cylinder engine, every 180 degrees of rotation, the valve clearance of the next firing cylinder can be adjusted in the ignition order of 1, 3, 4, 2. For a 3-cylinder engine, every 240 degrees of rotation, the valve clearance can be adjusted in the ignition order of 1, 2, 3.

6

3

Share

How to Use the Handbrake on Mercedes-Benz GLA200?

Can a Car Air Conditioner Be Powered by an External Source?

What are the differences between Mercedes-Benz S and Maybach S?

What does the ramp mean in Subject 1?

How to align with the dashed line on the slope in Subject 2?

How Often Should a Car's Refrigerant Be Replenished?

How to Adjust the Valve Clearance of Tiggo 3?

How long after passing Subject 1 can I schedule Subject 3?

Should I Step on the Brake When Changing Lanes in Driving Test Part 3?

Are Buick Cars Fuel-Consuming?

Is there no fee for Subject 4?