Turn off the ignition. Remove the key from the ignition. BMWs are very sensitive to voltage, and BMW 3-Series is no exception. To avoid electrical problems, start by removing the key from the ignition.
Open the hood. Locate the hood release underneath the dash. Pull the lever until you hear the hood pop open. Next, you need to release the hood safety latch at the front of the hood.
Locate the terminals where you can jump-start your BMW 3-Series. They are on the passenger side of the engine.
Connect Positive, Attach the red (positive) cable to the positive jump start terminal. If you are using another car to jump-start your BMW 3-Series, you will connect the red clamp here.
Connect the black (negative) cable to the ground post, which is the negative terminal.
Start Engine. If you are using a jump box, you are now ready to start your BMW. If you are using jumper cables to start the car, continue to the next step.
I have been working on vehicles for over 20 years. In 2016, I decided to start YOUCANIC so that I can empower vehicle owners all over the world. Currently, I hold an ASE certification on G1 Automotive Maintenance and Light Repair.