Reset ECU: Which Battery Terminal to Remove for a Hard Reset?

To reset the ECU safely, start by removing the negative battery terminal. This helps prevent short circuits. Wait for a few minutes to let the system discharge. Press the brake pedal to clear any residual power. Finally, reconnect the positive terminal first, then the negative terminal. Ensure all battery connections are secure. To perform a … Read more

Disconnecting Battery Terminals: Which One to Disconnect When Storing Your Car?

To safely disconnect the battery when leaving your vehicle, start with the black negative terminal. Next, disconnect the red positive terminal. Always use safety precautions. Cover the red terminal with a cloth or a plastic cap. This helps prevent accidental contact with metal parts in the engine. Disconnecting battery terminals helps prevent battery drain. When … Read more

9V Battery: Which is the Negative Terminal and How to Identify Battery Connections

The larger hexagonal or octagonal terminal is the negative terminal of a 9V battery. The smaller circular terminal is the positive terminal. Connect the smaller positive terminal to the larger negative terminal using appropriate connectors for proper operation with your load device. To further distinguish the terminal types, look for the metal connectors on top … Read more