ITB18-035C

Classification:
Reference:
Date:
KS18-031C
ITB18-035C
April 17, 2023
SECURITY ALARM SOUNDS AFTER USING MECHANICAL KEY
TO UNLOCK DRIVER DOOR
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.
APPLIED VEHICLES:
APPLIED DATES:
2018-2020 QX60 (L50)
2022-2023 QX60 (L51)
Built after September 15, 2017
SERVICE INFORMATION
The APPLIED VEHICLES are no longer equipped with a door unlock sensor and/or Body Control Module
(BCM) software to provide support for the door unlock sensor.
Infiniti 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 Infiniti retailer to determine if this
applies to your vehicle.
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Normal Functionality For Vehicles Built Without Door Unlock Sensor And/Or BCM Software To Support
Door Unlock Sensor
For APPLIED VEHICLES built after the APPLIED DATES listed on page 1, using the mechanical key on the
driver door will operate differently than vehicles built before the APPLIED DATES.
For these later models, the BCM will not recognize operation of the mechanical key.
If a mechanical key is used to lock the driver door:

The security system will not set. If the vehicle is broken into, the alarm will not sound.

Only the driver door will be locked. Other doors will not lock using the mechanical key.
If a mechanical key is used to unlock the driver door:

Only the driver door will be unlocked. Other doors will not be unlocked.

If the security system is set, when the door is opened the alarm will sound.
HINT: Using the Unlock button on the Intelligent Key, pushing the request switch on the driver or
passenger door with the Intelligent Key in range, or using the Intelligent Key to start the vehicle will
silence the alarm.
The mechanical key will not operate the power windows.
AMENDMENT HISTORY
PUBLISHED DATE
REFERENCE
DESCRIPTION
October 22, 2018
ITB18-035
Original bulletin published
February 9, 2021
ITB18-035a
Classification number updated
February 22, 2022
ITB18-035B
Updated APPLIED VEHICLES
April 17, 2023
ITB18-035C
APPLIED VEHICLES revised, and “NOTE” references changed
to “HINT”
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ITB18-035C