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What does MUT mean in a car?

1 Answers
ArianaDella
08/26/25 3:02am

The symbol for Bluetooth calling. After connecting a call, pressing MUTE will mute the call. TEL+ and TEL- are used to adjust the call volume. Here is some additional information: 1. The Bluetooth hands-free system in a car consists of the following components: a Bluetooth hands-free controller, a Bluetooth-enabled phone, a Bluetooth wireless headset, and a display screen. 2. The main functions of a car phone include: automatically recognizing mobile phones, connecting to a phone without the need for cables or a phone cradle; allowing users to control the phone without touching it (keeping hands on the steering wheel) and using voice commands to answer or make calls. 3. Choosing to make calls through the car's audio system means that when receiving or making a call, the car's audio will automatically mute, and voice transmission will occur through the audio system's speakers/microphone.

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Is an Idle Speed of 800 RPM Normal?

An engine idling at 800 RPM with stable operation is generally considered normal. However, if the engine runs unsteadily or vibrates severely at 800 RPM, it indicates an abnormality. Below is an introduction to idle conditions: Normal Idle: When the vehicle is parked and the engine is started, the minimum stable operating speed is referred to as parking idle (the process of the engine transitioning from a cold idle state to reaching the normal operating temperature idle state is called warm-up or hot idle). Driving Idle: When the car is in gear without pressing the accelerator pedal or when the accelerator pedal is released while driving, maintaining the minimum throttle opening, the engine speed matches the parking idle speed, known as driving idle. Unstable Idle: Unstable idle is one of the most common issues encountered in engine maintenance. Incorrect diagnostic approaches can prolong repair time, reduce efficiency, and even lead customers to switch to another repair shop due to impatience.
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What is the reason for the continuous noise of the booster pump when there is no water flow?

The reason for the continuous noise of the booster pump when there is no water flow is a problem with the pressure control system. Since there is no water usage in the pump's outlet direction, the pressure quickly replenishes, causing the booster pump to immediately go into standby mode. Another reason could be a leak in the pump's outlet pipe. Specific reasons: There is a problem with the pressure control system. The pump reaches the controlled pressure as soon as it starts working, causing it to stop. This indicates an issue with the pressure control system. When the pump stops, the pressure drops again. Since there is no water usage in the pump's outlet direction, the pressure quickly replenishes, causing the booster pump to immediately go into standby mode. This repeated cycle results in the phenomenon of intermittent noise. The solution is to replace the one-way check valve with a high-quality one. In fact, most cases of intermittent noise are caused by a faulty check valve. There is a leak in the pump's outlet pipe. A leak in the outlet pipe causing intermittent noise operates on the same principle as a leaky check valve—both are due to the drop in water pressure inside the pump cavity, which causes the pump to restart and replenish pressure. Because the water flow in the outlet direction is minimal, the pressure quickly rises to the set value, causing the booster pump to stop and maintain pressure. Once the pressure is reached, the leak causes the water pressure to drop again, prompting the booster pump to replenish pressure once more. This repeated cycle results in the phenomenon of intermittent noise. Precautions: The motor coil is equipped with a safety protector. If the pump malfunctions or fails to draw water, causing the motor temperature to exceed the specified value, it will automatically cut off the circuit. Once the fault is resolved and the motor temperature drops, it will automatically resume operation. The booster pump motor is a capacitor-run motor, and the rotation direction is preset at the factory. If you need to replace the capacitor or rewire, please follow the arrow direction marked on the pump body for wiring. To ensure safety, always use a three-core safety socket with a grounding wire. If you notice a leak in the pump, stop it immediately and check for internal leaks. If there is a leak at the connection with the motor, replace the mechanical seal. Check whether the power supply is connected. Ensure the power voltage matches the pump's operating voltage.
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What does it mean to take over the car?

Taking over the car midway means that during the driving test, the previous examinee completes their test and exits the vehicle, and the next examinee immediately moves from the back seat to the driver's seat to continue the test. Although it is referred to as continuing the test, the examinee must still follow the instructions of the examiner or the electronic system, just like in a regular Category 3 driving test. However, the order of the test items might be rearranged. Below are some tips for the Category 3 driving test: Follow the instructions: Listen carefully to the voice prompts during the Category 3 test and act accordingly. Remember not to perform any actions before the voice prompt ends; wait until it finishes before proceeding to the next step. Pay attention to special zones: In many regions, the voice prompts no longer remind examinees of special zones such as school areas, bus stops, and crosswalks. However, examinees must still perform corresponding deceleration or yielding actions based on the roadside signs and road markings. For school zones, apply the brakes within 10 meters of the sign, keeping the speed below 30 km/h. For bus stops, apply the brakes within 10 meters of the sign, keeping the speed below 30 km/h. For crosswalks, decelerate by applying the brakes within 30 meters before the crosswalk, and stop to yield if pedestrians are crossing.
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How to resolve car EPS fault codes?

Damage to the torque sensor within the steering system; damage to the steering angle sensor or issues with basic settings. The steering gear itself; deviations in the vehicle's four-wheel alignment data due to accidents; these can all cause system malfunctions. Contact a repair facility immediately.
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How to Use the Car Display Screen?

Short press the DISP button to switch between displays: range, instant fuel consumption, average fuel consumption, average speed, driving time, since start, and tire pressure. Short press to enter Bluetooth function or connect to the service center function. RES is the resume cruise/accelerate button. SET is the set cruise/decelerate button.
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How to Deal with Water Leakage in the Car B-Pillar?

Water flowing down along the door, aging door seals, or a broken door waterproof membrane can all cause this issue. Solutions include replacing the seals or adjusting the door to fit tighter. If it still leaks after replacement, then check the fit of the rubber seals. Apply colored paint, close the door, and then open it to observe the engagement condition.
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