B23040A

Service Bulletin Details

Public Details for: B23040A

Service news - the navigation clock and date are incorrect. This is due to a limited gps receiver capacity resulting in rollover of internal chip memory. The rollover occurred on january 1, 2022 at 12:00am local time


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ServiceNews Article
April 2023
B23040A Version 1
Clock Repair Procedure for Vehicle Navigation Systems Using the White
Map Disc
AFFECTED VEHICLES
Year
Model
2005–12
RL
2007–08
TL
2005–09
MDX
2007–12
RDX
2006–10
TSX
Trim Level
All vehicles with navigation
CONDITION
The navigation clock and date are incorrect. This is due to a limited GPS receiver capacity resulting in rollover of internal
chip memory; the rollover occurred on January 1, 2022 at 12:00AM local time.
Other Navigation Functions that can be Affected
Function
Symptom
Navigation history
The display of navigation history including registered location or destination
history is not in the latest order. Data newly added is not shown at the top,
but at the bottom of the list.
Route guidance
Navigation detour guidance may not perform properly.
Traffic information
Updated traffic information may not display on the navigation system
properly.
AcuraLink
• AcuraLink cannot be connected.
• Server route is not available due to the incorrect date and time information
sent from the vehicle.
© 2023 American Honda Motor Co., Inc. – All Rights Reserved
Page 1 of 2
WORK AROUND
On August 17, 2022, the system’s internal calendar recalibrated and the GPS time signal became valid again. The clock
shows the correct GPS time, but most could be off by up to 1 hour because the system’s internal calendar interprets the
daylight-saving time (DST) change incorrectly.
The client can adjust the time correctly, and it will not be affected if the vehicle’s power is cycled ON and OFF. The correct
time will display until the next DST change based on the system’s internal calendar.
Advise the client to set the Auto Daylight Saving function to OFF and adjust the DST manually.
NOTE: This work around will not address the incorrect calendar date that can affect the reminder function.
CORRECTIVE ACTION
To correct the Calendar and the Auto Daylight Saving function, refer the client to https://acuranavi.navigation.com/ to
purchase the 2021 White DVD Map Update for the U.S.
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