Step 1: Safely position the vehicles.
*** Park the working vehicle (with a charged battery) nose to nose with the disabled vehicle (Mercedes e320).
*** Make sure the vehicles are not touching and the parking brakes are engaged.
Step 2: Connect the jumper cables.
*** Identify the positive terminals (+) on both batteries (usually marked with a “+”).
*** Connect one end of the red (positive) jumper cable to the positive terminal of the working vehicle's battery.
*** Then, connect the other end of the red (positive) jumper cable to the positive terminal of the Mercedes e320.
Step 3: Connect the black (negative) jumper cable.
*** Locate the negative terminals (-) on both batteries (usually marked with a “-” or the word “GND”).
*** Connect one end of the black (negative) jumper cable to the negative terminal of the working vehicle's battery.
*** Connect the other end of the black (negative) jumper cable to an unpainted metal surface (NOT the negative terminal) of the Mercedes e320, such as the engine block. This helps prevent sparks near the battery.
NOTE: Do not connect the black jumper cable to the negative terminal of the Mercedes e320 battery directly.
Step 4: Start the working vehicle.
*** Start the working vehicle and let it run for a few minutes to charge the dead battery in the Mercedes e320.
Step 5: Attempt to start the disabled vehicle.
*** Try to start the Mercedes e320.
Step 6: Disconnect the jumper cables.
*** If successful, leave the Mercedes e320 running and disconnect the jumper cables in the reverse order of connection (black first, then red).
IMPORTANT
*** Be cautious when working with car batteries and electrical connections. Always follow safety precautions and refer to the owner's manual for specific instructions related to your vehicle.
NOTE
*** If the Mercedes e320 still fails to start, there might be other underlying issues that require attention from a qualified mechanic or through dealership service.
