Precautions For Removing Battery Terminal

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

When removing the 12V battery terminal, turn OFF the ignition switch and wait at least 2 minutes.

Courtesy of NISSAN NORTH AMERICA, INC.

NOTE: ECU may be active for several tens of seconds after the ignition switch is turned OFF. If the battery terminal is removed before ECU stops, then a DTC detection error or ECU data corruption may occur.
For vehicles with the two batteries, be sure to connect both batteries before turning ON the ignition switch.
NOTE: If the ignition switch is turned ON with any one of the terminals of the two batteries disconnected, then DTC may be detected.
After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE: The removal of 12V battery may cause a DTC detection error.