Battery Terminal Disconnection/Reconnection
Disconnection
NOTE: Some system store data in memory is lost when the battery is disconnected. Do the following procedures before disconnecting the battery.
  1. Make sure you have the anti-theft code(s) for the audio and/or the navigation system (if equipped).
    NOTE: For some models, it maybe necessary to write down the audio presets (AM and FM), because the audio unit does not retain the presets after the battery is disconnected.
  1. Make sure the ignition switch is in LOCK (0).
  1. Disconnect and isolate the negative cable from the battery.
    NOTE: Always disconnect the negative cable from the battery first.
  1. Disconnect the positive cable from the battery.