What Causes Hybrid System Malfunctions?

[AylaDella]

Hybrid system malfunction issues occur when the vehicle fails to start (system ready light not illuminated), with the dashboard displaying "Hybrid System Malfunction". It is recommended to wait for 10 minutes. Refrigeration unit pipeline leakage: For units that use refrigerant, this issue is relatively common. Since Freon circulates in a nearly sealed pipeline, there should be no natural loss. If leakage occurs during Freon refilling, methods such as pressure testing should be employed for detection or immediate repair. Refrigeration unit compressor failure: Overheating of the refrigeration unit compressor can cause the protector to fail. If the unit itself is functioning properly, the compressor may already be damaged. The causes of refrigeration unit pipeline blockage include incomplete vacuum extraction or moisture-induced ice blockage.

[LilahFitz]

I've been driving a hybrid car for several years, and there are quite a few reasons for hybrid system failures. The most common issue is battery problems. Over long-term use, the battery ages, and when charging efficiency drops, the car loses power. I remember once on a business trip, the system suddenly shut down, and the inspection revealed poor heat dissipation in the high-voltage battery, causing it to overheat and automatically shut down. There are also control unit failures, such as software update failures leading to logic confusion, causing stuttering when switching between the engine and motor. Sensors, like temperature control sensors, can also frequently malfunction, sending incorrect data that misleads the system's operations. These issues all need timely attention. I believe regular maintenance is key—getting periodic code scans at the shop can prevent many problems. Otherwise, sudden stops while driving can be very dangerous.

[DiDante]

In hybrid systems, common causes of failure primarily include aging of the high-voltage battery, where capacity degradation after excessive discharge leads to shutdown; in the motor or generator section, coil damage or bearing wear affects efficiency; control modules such as inverter burnout interrupt power transmission; sensor malfunctions, like faulty speed sensors misguiding system commands. These are typical issues, and it's best to use a diagnostic tool to check specific error codes. Other concerns like wiring harness short circuits or software bugs appearing after updates also require attention—simple component replacement may not suffice, necessitating overall calibration.

[SanHaven]

When I first bought a hybrid car, I didn't understand the causes of malfunctions, but now I know a bit: the battery doesn't last long and can't be fully charged; there are issues with the switching between the engine and motor, causing stuttering; the control computer miscalculates and reacts slowly; circuit aging and short circuits lead to failures. I recommend that beginners check the battery and sensors.