What Causes the Alarm to Sound After Locking a Highlander?

What kind of oil should be used for a 1.5t engine?

1.5t engines use fully synthetic oil. Here is more related information: Introduction to engine oil: 1. The working environment of a 1.5T turbocharged engine is more demanding than that of a naturally aspirated engine, so the requirements for lubricating oil are higher. Generally, 5W-40 fully synthetic oil is required. If you frequently drive aggressively, 5W-50 should be used. 2. For example, in "15W-40, 5W-40," the "W" stands for Winter. The smaller the number before it, the better the low-temperature fluidity of the oil, indicating that it can be used in lower environmental temperatures and provides better protection for the engine during cold starts. For instance, 5W represents resistance to external temperatures as low as -30°C, while 20W is resistant to -15°C. 3. The number after the W represents the kinematic viscosity of the oil at 100°C. The higher the number, the higher the viscosity. 40 means the kinematic viscosity standard at 100 degrees Celsius is between 12.5mm2/s and 16.3mm2/s, and it definitely does not mean, as some rumors suggest, that it can be used below 40°C.

3

Share

How Long Is the Warranty Period for Car Air Conditioning?

Car air conditioning warranty is consistent with the whole vehicle warranty period, which is two years or 60,000 kilometers, whichever comes first. Below is relevant information: 1. The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the vehicle compartment. It provides a comfortable riding environment for passengers, reduces driver fatigue, and enhances driving safety. The air conditioning system has become one of the indicators for measuring whether a car is fully equipped. 2. Types of car air conditioning: (1) By driving method: Independent type (powered by a dedicated engine to drive the compressor, with large cooling capacity and stable operation, but high cost, large size, and weight, mostly used in large and medium-sized buses) and non-independent type (the air conditioning compressor is driven by the car engine, and cooling performance is greatly affected by the engine operation). (2) By air conditioning performance: Single-function type (cooling, heating, and ventilation systems are installed separately and operated independently without interference, mostly used in large buses and trucks) and integrated heating-cooling type (cooling, heating, and ventilation share a blower and air duct, controlled on the same panel). (3) By control method: Fully automatic adjustment (uses calculation and comparison circuits to control adjustment mechanisms through sensor signals and preset signals, automatically adjusting temperature and air volume) and microcomputer-controlled fully automatic adjustment (uses a microcomputer as the control center to achieve comprehensive control of the in-car air environment).

1

2

Share

Where is the Engine Start-Stop Button Located?

Automatic start-stop buttons are typically located near the vehicle's gear shift lever or below the air conditioning panel. Some models may have this button positioned close to the ignition. The exact location varies by vehicle model. Below are important considerations regarding engine start-stop technology: 1. Disable start-stop on slopes: When the engine stops and restarts on an incline, there's a slight delay in providing braking force, which can cause the vehicle to roll when brakes are released, increasing danger. Modern vehicles can detect slopes and will temporarily disable start-stop on steep descents or ascents exceeding 12%. 2. Disable start-stop when using AC: Vehicles with this feature typically stop cooling when the engine shuts off, only providing air circulation, which affects comfort. In hot weather, cabin temperatures rise quickly, causing frequent engine restarts that increase wear. 3. Disable start-stop during water crossings: At low speeds through water, if brakes are applied, the system may stop the engine, creating negative pressure in the exhaust that could draw in water. Restarting with water in the exhaust can severely damage the engine. 4. Disable start-stop during low-speed parking: While the system doesn't activate in reverse gear, during complex parking maneuvers requiring multiple adjustments, unexpected engine stops can be both inconvenient and harmful to the vehicle.

18

4

Share

Do I Need to Dilute Windshield Washer Fluid with Water?

Vehicle windshield washer fluid needs to be diluted with water. The method for adding windshield washer fluid is: 1. Open the hood and locate the windshield washer fluid filler port; 2. Remove the cap and pour the windshield washer fluid into the reservoir; 3. Observe the liquid level until it reaches the marked line. The functions of windshield washer fluid are: 1. Cleaning performance; 2. Antifreeze performance - the presence of alcohol and ethylene glycol significantly lowers the freezing point of the liquid; 3. Anti-fog performance - forms a monomolecular protective layer on the surface to prevent fog droplet formation, ensuring clear windshield visibility; 4. Lubrication performance - the high viscosity of ethylene glycol provides lubrication, reducing friction between wipers and glass to prevent scratches.

10

5

Share

Why is the Low-Pressure Pipe of a Car Air Conditioner Hot to the Touch?

Causes for the low-pressure pipe of a car air conditioner being hot to the touch include compressor or expansion valve failure, evaporator blockage, insufficient refrigerant flow, or excessive pipeline pressure, as well as excessive fouling in the condenser copper tubes. Under normal circumstances, the low-pressure pipe of a car air conditioner should be cool, while the high-pressure pipe should be hot. If the low-pressure pipe becomes hot, the air conditioning cooling effect will be poor. Below is additional information: 1. Compressor or expansion valve failure: This can cause the low-pressure pipe of a car air conditioner to become hot. The air conditioner compressor plays a role in compressing and driving the refrigerant in the air conditioning refrigerant circuit. The air conditioner compressor extracts the refrigerant from the low-pressure area, compresses it, and sends it to the high-pressure area for cooling and condensation. The heat is dissipated into the air through the radiator, and the refrigerant changes from a gaseous state to a liquid state, with an increase in pressure. 2. Checking the refrigerant: If the expansion valve is blocked and the air conditioner is not working, check whether the refrigerant is sufficient. If it is insufficient, the system needs to be vacuumed before adding refrigerant, and then use a pressure gauge to check whether the pressure in the high and low-pressure pipelines is normal. 3. Identifying the high and low-pressure pipes of a car air conditioner: The thin one is the high-pressure intake pipe, and the thick one is the low-pressure pipe. You can also distinguish them by the letters next to the compressor connection. Some compressors are mostly marked with S or D to distinguish them, where S is the low-pressure connection and D is the high-pressure connection.

5

0

Share

What are the methods for choosing automotive explosion-proof film?

Automotive explosion-proof film should be selected based on the following methods: choose a film with good light transmission that does not obstruct visibility. The functions of explosion-proof film include: 1. Heat insulation and cooling: It can reduce the overheating phenomenon inside the car caused by sunlight exposure, keeping the interior cool while also reducing air conditioning consumption; 2. UV protection: While ultraviolet radiation has sterilizing effects, it can also harm human skin. Explosion-proof film effectively blocks UV rays, protecting passengers' skin; 3. Preventing glass cracking and interior fading: Besides harming the owner's skin, prolonged direct sunlight can cause the car's interior to crack and fade. Explosion-proof film also helps maintain the car's interior and prolong its service life.

1

2

Share

What Causes the Alarm to Sound After Locking a Highlander?

What kind of oil should be used for a 1.5t engine?

How Long Is the Warranty Period for Car Air Conditioning?

Where is the Engine Start-Stop Button Located?

Do I Need to Dilute Windshield Washer Fluid with Water?

Why is the Low-Pressure Pipe of a Car Air Conditioner Hot to the Touch?

What are the methods for choosing automotive explosion-proof film?

How to Judge the Left and Right Distance of the Car

How to Perform Emergency Braking in a Car Equipped with ABS System?

How Much Fuel Should Be Added to a Sedan?

What brand is the discoverer tire?