NTB13-107F

Classification:
Reference:
KS13-050F
Date:
NTB13-107F
April 27, 2023
VEHICLE KEY NOT DETECTED / AUTHENTICATED,
ENGINE WILL NOT START
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.
APPLIED VEHICLES:
All Nissan vehicles equipped with Intelligent Key
OR Nissan Anti-Theft System (NATS) key
SERVICE INFORMATION
APPLIED VEHICLES use Radio Frequencies (RF) that are similar to other wireless
devices.
In the event another wireless device (e.g., aftermarket alarm system) is transmitting at the
same time as a key, it can interfere with the signals being received by the BCM.
If there is interference with Intelligent Key signals, the following symptoms may
occur:

The Intelligent Key is not detected, causing:
o The engine to not start (no response when the Stop/Start button is pressed)
o “Incorrect Key ID” displayed in the instrument cluster
o “No I-Key Detected” displayed in the instrument cluster

Intermittent operation of the buttons on the remote (key fob).

Intermittent operation of the door request switches.
If there is interference with NATS Key signals, the following symptoms may occur:

The NATS key is not detected, causing:
o The engine to not start (no response when the key is turned)
o Illumination of the Immobilizer warning light (Figure 2 on page 2)
o DTCs B2191 (Difference of key) to be stored in the BCM, and P1615 (Difference
of key) to be stored in the ECM
The above symptoms are usually intermittent and can be difficult to diagnose.
If a vehicle has experienced the above symptoms, or a customer has reported the above
symptoms, refer to the Supplemental Diagnosis / Information sections beginning on
page 3.
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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HINT:

If the Immobilizer warning light (Figure 2) remains illuminated during attempts to
start the engine, this could indicate that the key was not authenticated properly.

The supplemental diagnostic items listed on the next page should be checked before
replacing any parts or performing any repairs.

Refer to the appropriate Electronic Service Manual (ESM) for complete key system
diagnosis and repair information.
Immobilizer warning light
will illuminate when trying
to start the engine
Figure 1
Figure 2
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NTB13-107F
Supplemental Diagnosis / Information for Both Key Types

If an RFID (Radio Frequency Identification) token (Figure 3) is placed within close
proximity to the vehicle key, it can interfere with the RF signals, resulting in an
inability to authenticate the key and cause a no start concern.
o Other contributors are:
 Keys with a similar transponder frequency
 Multiple keys on one keyring

Remove all aftermarket devices from the vehicle, including all other keys, while
diagnosing a no start concern.
Supplemental Diagnosis / Information for Vehicles Equipped with Intelligent Key

Intelligent Key fob battery check:
o Use the Signal Tech II IKEY Battery Test to confirm the battery state of charge.

Location of Intelligent Key:
o An Intelligent Key should not be stored where the RF signal can be obstructed
by nearby metal objects. This includes purses/back packs with RFID blocking
material, which could prevent proper Intelligent Key operation by obstructing the
RF signal.

Interference from other personal devices:
o Confirm the Intelligent Key is not placed in close proximity to phones, other
Intelligent Keys, highway PASS Card, USB charger, Personal Computer (PC)
charger, etc. that may be transmitting similar RF signals.
Supplemental Diagnosis / Information for Vehicles Equipped with NATS Key

NATS keys also contain a
transponder that can be
affected by interference.

For interference to cause a
no start condition, the source
of the interference will
typically be in close proximity
to the key; for example, an
RFID chip on a key chain
with the key (Figure 3).
Figure 3
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NTB13-107F

If the conditions on the previous page are not the cause of the symptoms, check for
the presence of an aftermarket alarm system, radar detector, or ANY electronic
devices, including other keys.

RF signals coming from the vehicle surroundings can interfere with the key signals,
such as radar detectors or aftermarket alarm systems in other vehicles or
surrounding buildings.

If you are unable to duplicate the concern, it is important to determine WHERE the
vehicle was located when the customer experienced the no start concern.
Example of electrical
devices that can
cause interference
Figure 4
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NTB13-107F
AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
DESCRIPTION
December 11, 2013
NTB13-107
Original bulletin published
November 29, 2016
NTB13-107A
Updated Applied Vehicles and made changes in the
body of the bulletin
March 26, 2018
NTB13-107B
Updated Applied Vehicles
October 15, 2019
NTB13-107C
March 12, 2021
NTB13-107D
February 22, 2022
NTB13-107E
April 27, 2023
NTB13-107F
Updated Applied Vehicles and made changes in the
body of the bulletin
Classification number updated
Publication date updated to include the latest
models and model years
Publication date updated to include the latest
models and model years, and Supplemental
Diagnosis / Information for Vehicles Equipped
with Intelligent Key revised
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NTB13-107F