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Home >> Acura >> 2012 >> RL >> Repair and Diagnosis >> Electrical >> Body Electrical >> Battery >> Battery Terminal Disconnection and Reconnection >> Disconnection

Battery Terminal Disconnection and Reconnection: Disconnection

NOTE: Some systems store data in memory that is lost when the battery is disconnected. Do the following steps before disconnecting the battery.
  1. Make sure you have the anti-theft code(s) for the audio system and/or the navigation system (if equipped).
  2. For some models or if you're replacing the audio unit, it maybe necessary to write down the audio presets (AM and FM), and the XM radio presets (if equipped), because the audio unit does not retain the presets after the battery is disconnected.
  3. Make sure the ignition switch is in LOCK (0).
  4. Remove the battery trim (see step 2 on UPPER FENDER TRIM REPLACEMENT ).
  5. Disconnect and isolate the negative cable from the battery.
    NOTE: Always disconnect the negative cable from the battery first.
  6. Disconnect the positive cable from the battery.