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Does a car dash cam record when the car is not running?

1 Answers
JuniperDella
07/25/25 7:02am
Under normal circumstances, a dash cam will not record when the car is not powered on. The classification and working methods of dash cams are as follows: Classification of dash cams: Generally, dash cams are divided into two types: one with parking monitoring and one without. A dash cam with parking monitoring can continue recording even when the car is turned off. Its working principle is that when the car body is impacted or when it detects movement in front of the car, the dash cam will automatically wake up and activate the monitoring function. However, this type of dash cam consumes the car battery's power. If left on for a long time, the car may not start due to power loss. Working methods of dash cams: When turned off, a dash cam is equivalent to being powered down. The device cannot work without a power supply. When the vehicle is turned off and the power is cut, the dash cam will use its own lithium battery to record, but the recording time is relatively short. If you want the dash cam to record continuously, you can directly use the car battery instead of the ACC power supply. In this case, the dash cam will remain in recording mode even when the car is turned off, but this will consume the car battery's power. It is recommended that car owners park their cars in safe and reliable places when parking outdoors to prevent collisions.
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What Causes the ABS Yellow Light to Illuminate?

There are multiple states of the ABS warning light, each with different causes and solutions: State 1: ABS warning light remains constantly illuminated (most common). Cause 1: The ABS wheel speed sensor's sensing area is covered by dirt, mud, or other contaminants, affecting its ability to detect wheel speed signals. This prevents the ABS control module from determining vehicle speed or wheel slip rate, thus failing to issue appropriate braking commands. Solution: Clean the wheel speed sensor and adjust the gap between the sensor and the tone ring. Cause 2: Loose wiring connections or poor contact in ABS relays causing signal issues. Solution: Inspect and reconnect any loose wiring connections. State 2: ABS warning light intermittently illuminates but turns off during acceleration. Cause: Battery voltage drops below 10.5V when multiple electrical components are in use. The light extinguishes when engine RPM increases and voltage rises. Possible low voltage supply to ABS system due to poor connections. Solution: Check battery specific gravity, charging system, and power supply connections (voltage relay or power contacts). State 3: ABS warning light stays on after engine start until engine is turned off. Cause: Poor ground connection at ABS hydraulic valve body; faulty wiring connections; ABS control module failure. Solution: Loosen and retighten hydraulic valve body ground screw (clean contact surface if necessary); check connector gaps; replace ABS or ABS/ASR control module. State 4: ABS warning light illuminates during high-speed driving. Cause: ABS control module detects significant speed difference between front and rear wheels; incorrect tire or wheel specifications. Solution: Verify correct tire and wheel specifications (refer to fuel filler door sticker). State 5: ABS warning light flashes intermittently. Cause: Improper brake light switch adjustment; internal contact issues in brake lights. Solution: With engine running, depress brake pedal and manually push brake switch linkage downward to reset position; replace brake light switch if needed. When the ABS warning light is on, continued driving is not recommended. ABS malfunction means loss of anti-lock braking function - locked wheels during emergency braking may cause skidding and loss of vehicle control, creating significant safety hazards.
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Can a Temporary ID Card Be Used for Subject 2 Driving Test?

A temporary ID card can be used for the Subject 2 driving test. However, if you do not have a regular ID card and need to use a temporary one, you must inform the driving instructor in advance and follow the driving school's arrangements for the test. According to Article 19, Paragraph 1 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," "First-time applicants for a motor vehicle driving license shall fill out an application form and submit their identity proof." Therefore, you can take the Subject 2 test with a temporary ID card. One important note: The validity period of a temporary resident ID card is three months. You can take the Subject 2 test within this validity period. If the card expires, you will not be allowed to enter the test site. Thus, it is essential to take the test before the temporary ID expires. If the temporary ID expires due to special circumstances, you should promptly apply for a formal ID card or a new temporary ID. Subject 2, also known as the small road test, is part of the motor vehicle driving license assessment. It refers to the field driving skills test. For small vehicles (C1/C2), the test includes five mandatory items: reverse parking, parallel parking, stopping and starting on a slope, right-angle turns, and curve driving (commonly known as the S-curve). Some regions may also include a sixth item: high-speed toll collection. According to Article 25 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses" (Ministry of Public Security Order No. 123), as of June 1, 2021, the Subject 2 test for C2 and C5 no longer includes stopping and starting on a slope. For large vehicles (AB licenses), the Subject 2 test covers 16 items: reverse parking, passing continuous obstacles, curve driving, highway simulation test, width-restricted gate, bumpy road, single-plank bridge, narrow road U-turn, stopping and starting on a slope, parallel parking, highway emergency handling, mountain road simulation, right-angle turns, rain and fog weather simulation, highway tire blowout, and tunnel simulation driving.
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What's the reason for a car navigation screen going black with sound?

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Is it normal for the Porsche Cayenne to have a successful Bluetooth connection but unable to play music?

It is not normal for the Porsche Cayenne to have a successful Bluetooth connection but unable to play music. Immediate inspection and repair are required. Steps to troubleshoot when music cannot be played: Confirm that the pairing is successful but music still cannot be played. Check if the phone can play music normally through external speakers. Test whether the Bluetooth connection with headphones or other Bluetooth devices works properly. If it works, the issue may be with the phone's Bluetooth; otherwise, the problem lies with the car's system. The role of car Bluetooth: Bluetooth car phone is designed for driving safety and comfort, allowing drivers and passengers to communicate with the outside world without the need for cables or phone holders. The Bluetooth hands-free system enhances driving safety and comfort.
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