Does turning on the car's power without starting the engine affect the vehicle?

2 Answers
SanFinn
07/28/25 8:45pm
No impact, it only consumes a small amount of electricity and will not affect the vehicle. However, if performing vehicle maintenance, be sure to disconnect the power to prevent the starter from engaging due to direct wiring, which can reduce the lifespan of wires and batteries and may cause spontaneous combustion. Here are some battery precautions: 1. Avoid storing the battery in a depleted state. A depleted state refers to when the battery is not recharged promptly after use, which can lead to sulfation. Lead sulfate crystals may form on the plates, blocking ion channels and resulting in insufficient charging and reduced battery capacity. 2. Conduct regular inspections. During use, if the electric vehicle's range suddenly drops by more than ten kilometers in a short period, it is likely that at least one battery in the pack has issues such as broken grids, plate softening, or active material shedding, leading to a short circuit.
Was this review help?
13
4
Share
OAubrey
08/12/25 1:28am
You know what, I've been driving for twenty years and I've encountered this issue quite often. Just turning on the power without starting the engine is actually quite harmful to the car. The most obvious problem is that the battery power gets drained bit by bit, because as soon as you turn on the power, things like the dashboard and the stereo start consuming electricity. My old car didn’t have a large battery capacity, so if I left the radio or lights on while listening to music in the parking lot, the battery would drop significantly in just half an hour, making the next startup difficult. In severe cases, it wouldn’t start at all, and I’d have to call for roadside assistance. More importantly, modern cars are equipped with electronic control systems, like computer modules, and frequently turning on just the power might cause unstable initialization, leading to weird error codes. I’ve seen a neighbor’s car cut its battery lifespan in half because of this, forcing an early replacement. So, doing this occasionally for a short time is fine, but if you’re waiting for your kid after school or for someone else, it’s best to start the engine to keep the battery charged. Otherwise, the repair costs might not be cheap.
Was this review help?
17
4
Share
Expand All
More Forum Discussions

What is the range of the MINIEV?

The Wuling Hongguang MINIEV offers two range options: 170km and 120km, primarily designed for urban commuting. Additional details: Motor: The MINIEV is equipped with a 20kW motor, with two versions of ternary lithium-ion battery packs available: 13.82kWh and 9.2kWh, featuring energy densities of 110Wh/kg and 100Wh/kg respectively. Charging: The MINIEV does not heavily rely on charging stations and can be charged directly using a standard household 220V three-pin grounded power supply. Additionally, the MINIEV innovatively includes a compact and easily storable integrated high-efficiency charging gun. Power: The vehicle is powered by a motor with a battery capacity of 9.06kWh, capable of delivering a maximum power of 9.2kW and a peak torque of 56 Nm. It achieves a range of up to 150 kilometers and a top speed of 60 kilometers per hour.
12
4
Share

Does the Vezel have a rearview camera?

The Vezel is equipped with a rearview camera. All models of the Vezel come with a rearview video imaging function, which displays the rearview image on the central control screen when the driver shifts into reverse gear. The new Vezel 1.5L models are equipped with a multi-function self-illuminating instrument panel, multi-function steering wheel, anti-glare interior rearview mirror, electrically adjustable exterior rearview mirrors, one-touch up/down for the driver's window, green heat-insulating glass for the front seats, and a premium rearview camera display system. Taking the Vezel 2020 220TURBO CVT Flagship Edition as an example: it is powered by a 1.5T 177-horsepower L4 turbocharged engine and a CVT continuously variable transmission, with a maximum power of 130 kW and a maximum torque of 220 Nm.
8
4
Share

How to Determine if the Cylinder Head Gasket is Blown?

Here are the symptoms of a blown cylinder head gasket: 1. The coolant temperature gauge suddenly shows an abnormally high reading during engine operation. 2. Coolant overflows or bubbles emerge from the expansion tank when abruptly pressing the accelerator pedal. 3. Oil and coolant stains appear at the junction between the engine block and cylinder head. 4. A high-pressure gas ejection sound can be heard from the engine compartment during operation. 5. Oil stains floating on the coolant surface can be observed in the expansion tank. 6. Noticeable power loss occurs during engine startup, accompanied by significantly reduced RPM and black smoke emission.
7
3
Share

What is SAIC Volkswagen Skoda?

Skoda Octavia is the first sedan under the SAIC Volkswagen Skoda brand. Below is relevant information: Introduction: As the first sedan of SAIC Volkswagen Skoda brand, Skoda Octavia is an advanced model synchronized with Europe, incorporating extensive localized improvements tailored for the Chinese market. It was successfully launched domestically on June 6, 2007. Product Highlights: The exterior design is simple yet elegant. The vehicle adopts Skoda's new family design language, presenting a clean, fashionable, and sophisticated styling. Delicate details add the finishing touches, with the most striking feature being the integrated panoramic sunroof with black glass. The black element extends from the front to the middle of the roof, and the extended full-open design creates excellent visual continuity and enhances cabin brightness.
11
4
Share

How to Drive an Audi A4?

Method to drive an Audi A4: 1. After the driver sits in the driver's seat without pressing the brake, press the start button once, at which point the ACC light will turn on, then press it again for the vehicle to perform a self-check; 2. Press the brake and press the one-touch start button to ignite and start the engine; 3. Release the foot brake, you can choose to warm up the car in place; 4. Press the foot brake again, shift into D gear, and press the electronic handbrake button until the light turns off; 5. Slowly release the foot brake and gently press the accelerator to complete the start. The Audi A4 is a B-class model manufactured by FAW-Volkswagen, with body dimensions of 4763mm in length, 1826mm in width, and 1426mm in height.
8
2
Share

What Causes the Car Wiper to Keep Running Nonstop?

When the car wiper keeps running nonstop, it is usually due to a fault in the wiper motor's circuit. When the driver operates the wiper handle, the demand signal is transmitted to the BCM (Body Control Module). The BCM then sends a start signal to the wiper motor, which controls the movement of the wiper arm to perform the corresponding action. The driver can disconnect the negative terminal of the battery to stop the wiper. Without activating the wiper handle, the car should be driven to a repair shop or 4S store to check for wiring issues. The power source of the wiper comes from the motor, which is the core of the entire wiper system and has stringent quality requirements. Typically, a DC permanent magnet motor is used, and the wiper motor installed on the front windshield is usually integrated with the worm gear mechanical assembly.
2
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.