Acura 2010 TL Owner's Manual page 437

AcuraLink (U.S. models only)
To cancel the appointment:
Select ''Messages'' on the
information screen, then press
ENTER. Select ''Scheduled Dealer
Appointment'' from the message
category list. Then press ENTER. To
cancel the appointment, select
''Cancel Appointment,'' then press
ENTER.
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The system will request you to
confirm the cancel on the navigation
screen. To cancel the appointment,
select ''YES,'' then press ENTER. If
you select ''NO,'' the screen goes
back to the previous message display.
2010 TL
The system will automatically
connect to the Acura server, then
show you the confirmation on the
navigation screen. If you accept the
cancel, press ENTER.