What is a Vehicle Sensor?

What are the reasons why a car door won't close?

The reasons why a car door won't close: the hinge or latch of the door is displaced, the door lock tongue cannot reverse and latch properly, issues with the door lock contact switch, or insufficient height of the contact installation. Solutions are as follows: 1. Open the door and use a T-20 spline to loosen the screw in the small hole on the door edge. 2. Remove the small cover of the door handle. 3. Loosen the cable in the door handle slot slightly. 4. If the above methods still cannot resolve the issue, promptly send the car to a 4S shop for replacement or repair. Functions of car doors: provide access for the driver and passengers, isolate external interference, and to some extent, mitigate side impacts.

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What Causes the Wiper Blade to Make Noise When Wiping the Windshield?

The reasons for the wiper blade making noise when wiping the windshield are as follows: 1. The wiper blade has aged. Solution: Replace the wiper blade with a new one. Generally, it is recommended to replace wiper blades every one to two years. 2. There is debris stuck in the wiper blade. Solution: Inspect and clean the wiper blade or remove any debris underneath it. 3. Incorrect installation angle of the wiper arm. Solution: Place a cloth under the head of the wiper arm to ensure the wiper blade is perpendicular to the windshield. 4. Abnormal movement caused by deformation, jamming, or rust in the linkage mechanism. Solution: It is recommended to clean the windshield with a cleaning solution or replace the wiper blade with a new one.

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What Causes Steering Wheel Vibration?

Steering wheel vibration causes and solutions are as follows: 1. Idle vibration: Loose steering wheel bolts or rubber bushings. The idle vibration issue is relatively minor and can be resolved by yourself. Solution: Tighten the bolts or rubber bushings. 2. Vibration during driving: When wheel balance is abnormal, the tires become unbalanced and bounce during driving. Since the steering wheel is connected to the tires, the force is transmitted through the drive shaft to the steering wheel, causing vibration which signals abnormal wheel balance. Solution: Requires inspection and repair at a 4S shop or repair facility.

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What to Do When the Car Transmission Fails?

Car transmission damage should be replaced. The correct usage methods of the transmission are as follows: 1. Avoid coasting in N gear: Manual transmissions can coast in neutral, but automatic transmissions cannot. The principle of automatic transmission is different from manual transmission; coasting in N gear can easily burn out the transmission. 2. Do not shift to P gear while waiting at traffic lights: Shifting to P gear (Park) when waiting at traffic lights, if rear-ended, will cause transmission damage. When parking, first apply the foot brake, wait until the car is completely stopped, then shift to P gear to avoid P gear jamming. 3. Shifting gears too quickly: When the car is not completely stopped, shifting from D gear to R gear creates an instantaneous reverse pressure that pushes against the reverse gear clutch plate, causing excessive wear on the clutch plate.

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What to Do When the Engine Malfunction Light Is On?

If the engine malfunction light is on, you can follow these steps: First, check whether the engine is running normally, such as if there is any shaking, black smoke, or difficulty starting. If any of these issues are present, try not to start the engine again. Especially note that if the red light is on, do not start the engine under any circumstances. If the engine is running normally and the car can be driven, go to a service station as soon as possible to diagnose the issue. The service station can easily read the fault code using a portable diagnostic tool to obtain targeted repair information. If the engine is running normally, the owner can also try gently reinserting all wiring harness connectors, as a loose connection might be the cause. Alternatively, repeatedly turning the key to the ON position may help reset the light. Generally, the engine malfunction light may be triggered by the following seven reasons: Sensor failure: This includes sensors such as the coolant temperature sensor, crankshaft position sensor, air flow sensor, intake temperature sensor, and oxygen sensor. If these sensors are damaged, have poor contact, or their signals are interrupted, the car's ECU cannot accurately obtain engine data, triggering the malfunction light. Fuel or oil quality issues: If fuel or engine oil is not added according to the manufacturer's specifications, it may cause engine wear, leading to the malfunction light turning on. Poor combustion of the air-fuel mixture: Poor combustion can cause engine carbon buildup or knocking. When detected by the oxygen sensor and reported to the ECU, the malfunction light will illuminate as a warning. Issues such as faulty spark plugs, ignition coils, fuel pumps, or clogged fuel lines can lead to poor combustion. Turbocharger issues: Problems with the intake boost piping or turbocharger can also trigger the engine malfunction light. The most common issue is a damaged turbocharger, often accompanied by symptoms such as oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black smoke from the exhaust. Intake problems: If there is an issue with the car's air intake, it may lead to clogged engine pipes, which can trigger the malfunction light in severe cases. A dirty or uncleaned air filter can cause intake problems. Exhaust problems: Exhaust system faults can also cause the engine malfunction light to turn on. Common causes include faults in the rear oxygen sensor, catalytic converter, exhaust camshaft, or bearings. The catalytic converter is the most frequently affected component. Using leaded gasoline, lead- or silicon-containing lubricant additives, physical damage to the catalytic converter, or fuel system issues can easily cause catalytic converter failure. Anti-theft system failure: If the car's electronic anti-theft system malfunctions or the anti-theft controller does not match the engine's electronic controller, the anti-theft system may prevent the engine from operating normally, also triggering the malfunction light.

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What Causes the ABS Light to Illuminate on the Vehicle Dashboard?

ABS light illumination can occur in various states, each with different causes and solutions, as detailed below: State 1: ABS warning light stays on continuously (most common). Cause 1: The ABS speed sensor's sensing part is covered by dirt, mud, or other contaminants, affecting its ability to detect the corresponding speed signal. This prevents the ABS computer from determining the vehicle's speed and wheel slip rate, thus failing to issue appropriate commands to regulate braking. Solution: Clean the contaminants from the speed sensor and adjust the gap between the sensor and the signal ring to restore normal function. Cause 2: Poor signal transmission due to loose connections in the system wiring or poor contact in the ABS relay, leading to system malfunction. Solution: Inspect the wiring connections and reconnect any loose parts. State 2: ABS warning light intermittently illuminates but turns off when accelerating. Cause: When multiple vehicle electrical devices are in use, the battery voltage drops below 10.5V. The ABS warning light turns off as the engine speed increases and voltage rises. This may also occur if the ABS system's power supply voltage is too low due to poor terminal contact or grounding issues. Solution: Check the battery's specific gravity, inspect the charging system, and examine the power supply (e.g., voltage relay or poor power contact). State 3: ABS warning light remains on after engine start and only turns off when the engine is turned off (IGFF). Cause: Poor grounding connection in the ABS hydraulic valve body; poor contact in the ABS hydraulic valve body wiring connector; ABS computer malfunction. Solution: Loosen and then retighten the grounding screw on the hydraulic valve body, cleaning the contact surface if necessary. Check for enlarged gaps in the connector; replace the ABS or ABS/ASR computer if needed. State 4: ABS warning light illuminates during high-speed driving. Cause: The ABS computer detects a significant discrepancy between rear and front wheel speed signals during high-speed driving. This may also occur due to incorrect tire or wheel rim specifications. Solution: Refer to the vehicle's tire and wheel rim specifications, as indicated on the label near the fuel tank cap. State 5: ABS warning light intermittently illuminates. Cause: Improper adjustment of the brake light switch; poor internal contact in the brake light. Solution: With the engine running, press the brake pedal and use a finger to push the brake switch linkage fully downward. Release the brake pedal to complete the self-setting position. Replace the brake light switch if necessary. If the ABS warning light is on, it is advisable not to continue driving. An illuminated ABS light indicates a malfunction in the vehicle's anti-lock braking system. During emergency braking, if the wheels lock up, the vehicle may skid uncontrollably, preventing the driver from slowing down or adjusting the vehicle's trajectory, posing significant safety risks.

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What is a Vehicle Sensor?

What are the reasons why a car door won't close?

What Causes the Wiper Blade to Make Noise When Wiping the Windshield?

What Causes Steering Wheel Vibration?

What to Do When the Car Transmission Fails?

What to Do When the Engine Malfunction Light Is On?

What Causes the ABS Light to Illuminate on the Vehicle Dashboard?

What car brand has a 'T' logo?

Should I Shift to P Gear After Turning Off the Engine?

Is the Parking Brake System the Handbrake?

How to Use the Cruise Control on the Roewe i6?