Infiniti FX35, FX50 (S51). Manual - part 479

INTELLIGENT KEY SYSTEM

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< SYSTEM DESCRIPTION >

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WARNING FUNCTION

WARNING FUNCTION : System Description

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OPERATION DESCRIPTION

The warning functions are as per the following and are given to the user as warning information and warnings
using combinations of Intelligent Key warning buzzer, KEY warning lamp, key slot illumination and information
displayed on combination meter.
• Intelligent Key system malfunction
• OFF position warning
• P position warning
• ACC warning
• Take away warning
• Door lock operation warning
• Key warning
• Intelligent Key insert information
• Engine start information
• Steering lock information
• Intelligent key low battery warning
• Key ID warning

OPERATION CONDITION

Once the following condition from below is established, alert or warning is performed.

10. Back door lock assembly D122

11.

Back door opener request switch 
D116

A.

View with luggage floor finisher front 
removed

B.

View with back door finisher inner re-
moved

Warning/Information functions

Operation procedure

Intelligent Key system malfunction

When a malfunction is detected on BCM, “KEY” warning lamp illuminates.

OFF position warning 

For internal

• Ignition switch: ACC position.
• Door switch (driver side): ON (Door is open).

For external

OFF position warning (For internal) is in active mode, driver side door has is 
closed.
NOTE:
OFF position (For external) active only when each of the sequence occurs as 
per the following: P position warning 

→

 ACC warning 

→

 OFF position warning 

(For internal) 

→

 OFF position warning (For internal)

P position warning

• Shift position: Not the P position.
• Engine is running to stopped (Ignition switch is ON to OFF).

ACC warning

• When the P position warning is in active mode, shift position is changed to 

P position.

• Ignition switch: ACC position.

Take away warning

Door is open to close

• Ignition switch: Not the LOCK position.
• Door switch: ON to OFF (Door is open to close).
• Intelligent Key can not be detected inside the vehicle.

Door is open

• Door switch: ON (Door is open).
• Key ID verification every 5 seconds when registered Intelligent Key can not 

be detected inside the vehicle.

Push button-ignition 
switch operation

• Ignition switch: Not the LOCK position.
• Press push-button ignition switch.
• Intelligent Key can not be detected inside the vehicle.

Intelligent Key is removed 
from key slot

• When Intelligent Key is removed from key slot, Intelligent Key can not be de-

tected inside the vehicle.

DLK-40

< SYSTEM DESCRIPTION >

INTELLIGENT KEY SYSTEM

WARNING METHOD

The following table shows the alarm or warning methods by using the chime.
Information display (combination meter), “KEY” indicator or key slot illumination when the warning conditions
are met.

Door lock operation warn-
ing

Request switch operation

When request switch is pushed (lock operation) under the following conditions.
• All doors are closed.
• All door is unlocked.
• Intelligent Key is inside vehicle.

Intelligent Key button op-
eration

When Intelligent Key button is pushed (lock operation) under the following con-
ditions.
• Door switch: ON (Any door is open).
• For 3 seconds after Intelligent Key is removed from key slot.

Key warning

• Ignition switch is in the OFF position.
• Driver side door switch: ON (Driver side door is open).
• Intelligent Key is inserted in key slot.

Intelligent Key insert information

• Door switch: ON to OFF (Door is open to close).
• Ignition switch: OFF to ON position.
• Intelligent Key is out of key slot.
• Intelligent Key can not be detected inside the vehicle.

Engine start information

Ignition switch is in the 
ON position

• Ignition switch: ON position.
• Shift position: P position.
• Engine is stopped.

Ignition switch is not in the 
ON position

• Ignition switch: Not in the ON position.
• Shift position: P position.
• Intelligent Key is inserted in key slot or Intelligent Key can be detected inside 

the vehicle.

Steering lock information

When steering lock can not be released after ignition switch is turned ON.

Intelligent Key low battery warning

When Intelligent Key is low battery is low, BCM is detected after ignition switch 
is turned ON.

Key ID warning

When registered intelligent Key can not be detected inside the vehicle after ig-
nition switch is turned ON.

Warning/Information functions

Operation procedure

Warning/Information functions

“KEY” warn-

ing lamp

Information display

(combination meter)

Key slot il-
lumination

Warning chime

Combination 

meter buzzer

Intelligent 

Key warning 

buzzer

Intelligent Key system malfunction

Illuminate

—

—

—

—

OFF position warn-
ing 

For internal

—

—

—

Activate

—

For external

—

—

—

—

Activate

P position warning

—

—

Activate

—

ACC warning

—

—

—

—

JMKIA0037GB

JMKIA0047GB

INTELLIGENT KEY SYSTEM

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< SYSTEM DESCRIPTION >

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Take away warning

Door is open to 
close

—

Blink

Activate

Activate

Door is open

—

Blink

—

—

Push-ignition 
switch operation

—

Blink

Activate

—

Intelligent Key is 
removed from 
key slot

—

Blink

—

—

Door lock operation 
warning

Request switch 
operation

—

—

—

—

Activate

Intelligent Key 
operation

—

—

—

—

Activate

Key ID warning

—

—

—

—

Key warning

—

Blink

Activate

—

Intelligent Key insert information

—

Blink

—

—

Engine start information

—

—

—

—

Warning/Information functions

“KEY” warn-

ing lamp

Information display

(combination meter)

Key slot il-
lumination

Warning chime

Combination 

meter buzzer

Intelligent 

Key warning 

buzzer

JMKIA0036GB

JMKIA0036GB

JMKIA0035GB

JMKIA0034GB

JMKIA0032GB

DLK-42

< SYSTEM DESCRIPTION >

INTELLIGENT KEY SYSTEM

LIST OF OPERATION RELATED PARTS

Parts marked with 

×

 are the parts related to operation.

Steering lock information

—

—

—

—

Intelligent Key low battery warning

—

—

—

—

Warning/Information functions

“KEY” warn-

ing lamp

Information display

(combination meter)

Key slot il-
lumination

Warning chime

Combination 

meter buzzer

Intelligent 

Key warning 

buzzer

JMKIA0033GB

JMKIA0048GB

Warning function

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“KEY

” warning lamp

Intelligent Key system malfunction

×

×

×

OFF position warning

For internal

×

×

×

×

For external

×

×

×

P position warning

×

×

×

×

×

×

ACC warning

×

×

×

×

×

×

Take away warning

Door is open or close

×

×

×

×

×

×

×

×

×

Door is open

×

×

×

×

×

×

×

Push-ignition switch oper-
ation

×

×

×

×

×

×

×

×

Intelligent Key is removed 
from key slot

×

×

×

×

×

×

×

Door lock operation warning

×

×

×

×

×

×

×

×

Key ID warning

×

×

×

×

×

×

×

Key warning

×

×

×

×

×

×

×

×

Intelligent Key insert information

×

×

×

×

×

×

×

×

×

Engine start information

Ignition switch is in the ON 
position

×

×

×

×

×

×

×

×

Ignition switch is not in the 
ON position

×

×

×

×

×

×

×