Received this direct from Acura when I couldn't Te reset the clock after changing from DST to EST and from EST to DST. Worked each time.The following steps must be followed as written but prior to starting the process ensure your radio and navigation codes are readitly available. Here goes:
1. Disconnect the battery Negative (-) terminal first, followed by 12

ositive (+) terminal at the exact local time of 12:40 AM/PM.
2. With an accurate source of time (used my I-Phone) to compare it to, reconnect the Positive (+) termnal followed by the Neglative (-) terminal at exactly 1:00 AM/PM.
3. Turn the ignition to ACC, enter both the Navigation Code and Radio codes. The digital LCD clock will not keep time from 1:00 AM/PM local time