INFINITI Q50 HYBRID 2018 Dismantling Guide

3-4 How to Handle a Damaged Vehicle
3-4.1
High-voltage System Shut-Down Procedure
Any of the following procedures can shut down the high-voltage system. The dismantling operation canonly
begin after shutting down the high-voltage system. If the vehicle is heavily damaged, for example the high-
voltage battery is deformed, broken or cracked, appropriate PPE must always be used and the high-voltage
battery and high-voltage components must not be touched. DANGER
• Failure to properly shut down the high-voltage system before the dismantling
procedures
are performed will result in serious injury or death from electrical shock.
To prevent serious injury or death, NEVER touch high-voltage harnesses or
components without always wearing appropriate Personal Protective Equipment
(PPE) . Appropriate PPE must always be worn when touching or working on high-
voltage components.
•
When contact with high-voltage components or high-voltage harnesses is
unavoidable, or when there is risk of such contact, you must always wear appropriate
PPE. PPE must always be worn when touching or working on high-voltage components. • The vehicle contains parts that contain powerful magnets. If a person who is wearing
a

pacemaker or other medical device is close to these parts, the medical device may be
affected by the magnets. Such persons must not perform work on the vehicle.
• Be sure to verify that the READY indicator is off (if possible) , and the high-voltage
system

is stopped.
• After the high-voltage system is shut down, please wait approximately ten (10) minutes for complete discharge of the high-voltage capacitor. While waiting, do not operate any
vehicle functions.
• After shutting down the high-voltage system and removing the 12-volt battery negative (-) terminal, wait at least three (3) minutes to discharge the air bag capacitor. Even though
the 12-volt battery negative (-) is disconnected, the Supplemental Restraint System (SRS)
air bag maintains voltage at least three (3) minutes. During this time, there is a possibility
of sudden SRS air bag inflation due to harness short circuit or damage and it may cause
serious injuries.
• The 12V system will remain active even after the 12-volt battery negative (-) terminal is removed while the high-voltage system is active. This is because the charging system
will not shut down and power will be supplied to the 12V system and high-voltage system
continuously.
Before disconnecting the 12-volt battery terminal, if necessary, lower the windows, adjust the steering
column, adjust the seats, unlock the doors, open the trunk, etc. as required. Once the 12-volt battery is
disconnected, power controls will not operate.
DG–21

Powering Down the High-voltage System
The
high-voltage system can be shut down with any 1 of the following procedures:• Turn OFF the power switch and disconnect the 12-volt battery. Refer to Primary Procedure
(DG–22) .
•

Remove the fuse for the high-voltage control system and disconnect the 12-volt battery.
Refer to Alternate Procedure 1 (Disconnect Underhood Fuse Panel) (DG–25).
•

Remove the service plug and disconnect the 12-volt battery. Refer to Alternate Procedure 2
(Remove

Service Plug) (DG–28) .
Primary

Procedure
NOTE:
Before disconnecting the 12-volt battery terminal, if necessary, lower the windows, adjust
the steering column, adjust the seats, unlock the doors, etc. Once 12-volt battery is
disconnected, power controls will not operate.
1. If possible, check the READY indicator status in the instrument cluster. If it is on, the high-
voltage

system is active.
2. Place the shift selector in the Park (P) position.
3. Push the ignition switch once to turn OFF the high- voltage system. Verify that the READY indicator is off
and then continue to the next steps to open the trunk
for 12-volt battery negative cable access.
If the READY indicator does not turn off, refer to
Alternate Procedure 1 (Disconnect Underhood Fuse
Panel)
(DG–25)
4. If possible, keep the Infiniti Intelligent Key at least 5
meters (16 feet) away from the vehicle (except to
open the trunk as noted below) . AAYIA0191ZZ
LOCK
ACC
(OFF)
ON
AAYIA0192ZZ
AAYIA0068ZZ
DG–22

5. Open the trunk using any of the following:
NO TE:
The trunk release power cancel switch must be in the
ON position in order for the trunk to be opened
using any of the methods below.
a. push-button switch on the lower LH side of theinstrument panel (ensure that the trunk release
power cancel switch is in the ON position) .
b. trunk button on the Infiniti Intelligent Key [press for longer than one (1) second].
c. trunk open request switch (located above license plate)*. Method
Shift Selector Position Ignition Switch Status
a
P or N Any
b POFF
c* Any Any
* You must have the Infiniti Intelligent Key within approximately 1 meter (3 feet) range of trunk request switch
to use the trunk open request switch function.
OFF
ON AAYIA0203ZZ
AAYIA0068ZZ
AAYIA0194ZZ
DG–23

NOTE:
If
the electrical release does not work, the trunk will have to be forced open.
6. Open the 12-volt battery service access cover.
7. Disconnect negative (-) battery cable and cover it withinsulated tape.
8. Wait approximately ten (10) minutes for complete discharge of the high-voltage capacitor
after the battery cable has been disconnected.
9. Perform the dismantling operation. Refer to 6. Dismantling Information (DG–42). AAYIA0195ZZ
AAYIA0196ZZ
DG–24

Alternate Procedure 1 (Disconnect Underhood Fuse Panel)
NO
TE:
Before disconnecting the underhood fuse panel and the negative (-) battery cable,
if necessary, lower the windows, adjust the steering column, adjust the seats, unlock the
doors, etc. Once the underhood fuse panel and negative (-) battery cable are disconnected,
power controls will not operate.
1. Pull release handle (1) and pull up release lever (2) to open the hood.
2. Remove clips (A) and RH hood ledge cover (1) .NOTE: : Arrow in illustration depicts vehicle front
direction.
3.

Remove clips (A) and RH cowl cover (1) . TGAAYIA0009ZZ
AAYIA0207ZZ
AAYIA0208ZZ
DG–25

4. Disengage pawls (A) of underhood fuse panel cover and
remove underhood fuse panel cover (1) .
NOTE: : Arrow in illustration depicts vehicle front
direction.
5.

Pull underhood fuse panel (1) out by hand and
disconnect terminal (black) connector (A) .
NOTE: : Arrow in illustration depicts vehicle front
direction.
6.

If you cannot identify the connector, disconnect all
connectors on the underhood fuse panel. To avoid unintended reinstallation and risk of electrical shock and severe personal injury or
death,

the dismantler should cover the fuse box and connectors with insulated tape or
remove the fuse panel and carry on his/her person.
7. Open the trunk using any of the following:NOTE:
The trunk release power cancel switch must be in the
ON position in order for the trunk to be opened
using any of the methods below.
a. push-button switch on the lower LH side of theinstrument panel (ensure that the trunk release
power cancel switch is in the ON position) . A
1
AAYIA0209ZZ 1
A
AAYIA0210ZZ
OFF
ON AAYIA0203ZZ
DG–26

b. trunk button on the Infiniti Intelligent Key
[press for longer than one (1) second].
c. trunk open request switch (located above license plate)*.
* You must have the Infiniti Intelligent Key within
approximately 1 meter (3 feet) range of trunk
request switch to use the trunk open
request switch function.
NOTE:
If the electrical release does not work, the
trunk will have to be forced open.
8. Open the 12-volt battery service access cover.
9. Disconnect negative (-) battery cable and cover it with insulated tape.
10. Wait approximately ten (10) minutes for complete discharge of the high-voltage capacitor
after the fuse panel and battery cable have been disconnected.
11. Perform the dismantling operation. Refer to 6. Dismantling Information (DG–42). AAYIA0068ZZ
AAYIA0194ZZ
AAYIA0195ZZ
AAYIA0196ZZ
DG–27

Alternate Procedure 2 (Remove Service Plug)
DANGER
• Do not remove the service plug without always wearing appropriate Personal
Protective Equipment (PPE) to help protect the dismantler from serious injury or death
by electrical shock.
• Immediately cover the service plug socket with insulated tape. The high-voltage
battery
retains high-voltage power even when the service plug is removed. To avoid
electric shock, NEVER touch the terminals inside the socket. To avoid unintended reinstallation and risk of electrical shock and severe personal injury
or

death, the dismantler should carry the service plug on his/her person while work is in
progress.
NOTE: Before disconnecting the 12-volt battery terminal, if necessary, lower the windows, adjust
the steering column, adjust the seats, unlock the doors, etc. Once 12-volt battery is
disconnected, power controls will not operate.
1. If possible, check the READY indicator status in the instrument cluster. If it is on, the high-
voltage

system is active.
2. Place the shift selector in the Park (P) position.
3. Push the ignition switch once to turn OFF the high- voltage system. Then verify whether the READY indicator
is off.
If the READY indicator does not turn off, continue to
step 4. AAYIA0191ZZ
LOCK
ACC
(OFF)
ON
AAYIA0192ZZ
DG–28

4. If possible, keep the Infiniti Intelligent Key at least
5 meters (16 feet) away from the vehicle (except to open
the trunk as noted below) .
5. Open the trunk using any of the following: NOTE:
The trunk release power cancel switch must be in
the ON position in order for the trunk to be opened
using any of the methods below.
a. push-button switch on the lower LH side ofthe instrument panel.
b. trunk button on the Infiniti Intelligent Key [press for longer than one (1) second]. AAYIA0068ZZ
OFF
ON AAYIA0203ZZ
AAYIA0068ZZ
DG–29

c. trunk open request switch (located above
license plate)*. Method
Shift Selector Position Ignition Switch Status
a
P or N Any
b POFF
c* Any Any
* You must have the Infiniti Intelligent Key within approximately 1 meter (3 feet) range of trunk request switch
to use the trunk open request switch function.
NOTE:
If the electrical release does not work, the trunk will have to be forced open.
6. Open the 12-volt battery service access cover.
7. Disconnect negative (-) battery cable and cover it withinsulated tape. AAYIA0194ZZ
AAYIA0195ZZ
AAYIA0196ZZ
DG–30