Classification:

Reference:

EL20-024

Date:

NTB20-052

July 17, 2020

2020 SENTRA; REAR DOOR ALERT SERVICE INFORMATION
APPLIED VEHICLE:

2020 Sentra (B18)

SERVICE INFORMATION
This bulletin contains supplemental information related to the rear door alert system on
2020 Sentra models.
Although the Electronic Service Manual (ESM) should be the primary source of information
for inspection, diagnosis, and repair, the supplemental information in this bulletin will assist
in these areas.
The information in this bulletin includes:


Rear door alert description



How to turn the rear door alert system on and off



How to turn the horn alert function on and off



Vehicle information display messages



Rear door alert operation

NOTE: Do NOT replace the BCM for a rear door alert concern unless all information in this
bulletin has been reviewed and the concern has been verified to be abnormal.

IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you
will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it
contains information that is essential to successfully completing this repair.
Nissan Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are
properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job
properly and safely. NOTE: If you believe that a described condition may apply to a particular vehicle, DO
NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle.

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REAR DOOR ALERT DESCRIPTION


The rear door alert functions under certain conditions to indicate there may be an
object in the rear seat.



The rear door alert does not directly sense or detect objects in the rear seat. Instead,
it can detect when the rear door is opened or closed, indicating that there may be
something in the rear seat.

HOW TO TURN THE REAR DOOR ALERT SYSTEM ON AND OFF
1.

Press the left or right arrow button, on the left side of the steering wheel, until
Settings displays.

2.

Press the up or down arrow button to select Vehicle Settings.

3.

Press the OK button.

4.

Press the up or down arrow button to
select Rear Door Alert.

5.

Press the OK button.

Figure 1

6.

Highlight OFF and press the OK
button to turn the system off.

7.

Deselect OFF and press the OK
button to turn the system on (not
shown).

Figure 2

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NTB20-052

HOW TO TURN THE HORN ALERT FUNCTION ON AND OFF


Follow steps 1-5 on page 2 to enter
the Rear Door Alert menu.
 Highlight Horn & Alert and press
the OK button if the horn alert
function is desired.
 Highlight Alert Only and press the
OK button if the horn alert function
is not desired.
NOTE: If the alert function is NOT
desired, the Rear Door Alert system
must be turned off (steps 1-6
on page 2).

Figure 3

VEHICLE INFORMATION DISPLAY MESSAGES


When the rear door alert is active,
the message in Figure 4 appears to
remind the driver to check the rear
seat.
 If desired, Dismiss Message can
be selected to clear the display.
 If desired, Disable Alert can be
selected to disable the rear door
alert for the current trip.
 If no selection is made, this
message will disappear after a
period of time.

Figure 4

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NTB20-052

REAR DOOR ALERT OPERATION
NOTE: For the rear door alert system to function, it must be turned ON in Vehicle
Settings.
Conditions when rear door alert will be activated


The rear door alert system is activated when the vehicle is driven within
approximately 10 minutes of opening a rear door.
 Once the system is activated, the horn will sound (if selected) and the vehicle
information display message will display on every trip UNLESS deactivated
by one of the two methods:
o The driver opens a rear door within a short time after arriving at their
destination.
o Dismiss Message is selected in the vehicle information display (Figure 4).

Conditions when rear door alert will NOT be activated


If one of the rear doors is used, but the vehicle is not driven within approximately 10
minutes, the system will not be activated.

Exiting the vehicle with the rear door alert activated


When the driver exits the vehicle,
after arriving at a destination, a rear
door must be opened within a short
time to deactivate the alert.
 If the driver exits the vehicle while
the rear door alert is active, the
message Check Rear Seat for All
Articles will be displayed, and the
horn will sound, (if selected as
shown in Figure 3 on page 3).
Figure 5


If the driver exits the vehicle and the doors are locked before the alert is
deactivated, the horn will sound (if selected).



If the driver exits the vehicle and the trunk is opened before opening a rear door,
the horn alert (if selected) will sound after the trunk is closed.

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NTB20-052

AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
July 17, 2020

NTB20-052

DESCRIPTION
Original bulletin published

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NTB20-052