Ignition Off When Disconnecting Battery Notice
WARNING: This page does not describe the selected car, but rather 249 other vehicles, including the 2004 Saturn Vue, 2004 Saturn L300, 2004 Saturn Ion Red Line, 2004 Saturn Ion 3, and 2004 Saturn Ion 2. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Always turn the ignition OFF when connecting or disconnecting battery cables, battery chargers, or jumper cables. Failing to do so may damage the Powertrain Control Module (PCM) or other electronic components.