Where is the grounding point of a car?
2 Answers
The grounding point of a car: It is located next to the battery on the left side of the car engine. Here are the precautions for car grounding: When grounding is needed: When the vehicle cannot be started by pressing the one-button start or using the key, and repeated attempts fail to start normally, jumper cables are required for rescue. Correct grounding operation: The rescue vehicle should approach the front of the dead vehicle (to avoid insufficient length of the jumper cables due to excessive distance); Ensure all electrical devices of the dead vehicle are turned off, as electrical devices can drag the engine to start, requiring a larger starting current; Jumper cable connection method: Connect positive to positive and negative to negative.
The grounding wire locations are actually quite scattered. Last time my car had a dead battery, it was due to a loose grounding point. The mechanic showed me several spots: in the engine bay, the most common ones are fixed to metal screws on the fender rail or shock tower. Some models also have grounding points near the battery tray. Under the driver's seat, you'll see thick wires screwed onto the metal frame—this is the main grounding point inside the car. Near the spare tire well in the trunk, there are copper plates attached to the body, and near the exhaust hangers, there are dedicated anti-static grounding wires. I remember the mechanic said that as cars age, oxidation becomes a problem. Last time, he sanded the grounding point at the rear of the engine, and the poor contact issue was immediately resolved. It's recommended to check these metal contact surfaces for rust during routine maintenance.
