Why is the Mercedes-Benz car not responding when starting?

[VioletMarie]

Car fails to start, idle speed is unstable, and engine speed fluctuates. Here are the detailed explanations: 1. Long-term parking: The usage time of the car battery is the main cause of power loss. Typically, the lifespan of a car battery is two to three years. If it exceeds this period, the car is highly likely to experience power loss after being parked for just two or three days, resulting in weak starting. 2. Forgetting to turn off lights and onboard electrical devices: If you forget to turn off the interior lights when parking and turning off the engine, the battery may be depleted after a night's consumption, leading to insufficient power and weak starting. 3. Forgetting to turn off the air conditioning before shutting down the engine: Most car owners are accustomed to not turning off the air conditioning or letting it automatically start when the vehicle is started. This causes the air conditioning system to automatically start working every time the ignition switch is turned on, directly resulting in an instantaneous overload of the vehicle's power. Over time, this will cause damage to the battery.