Removal & Installation: Notes
WARNING:
Before disconnecting any hydraulic brake component (including brakelines), depressurize ABS hydraulic system by turning ignition switch to OFF position and depressing brake pedal at least 40 times.
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES
article in the GENERAL INFORMATION section before disconnecting battery.