ITB14-053b

Classification:
Reference:
Date:
AT14-015b
ITB14-053b
June 4, 2019
ABNORMAL NOISE FROM FRONT ENGINE MOUNT
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Discard all previous versions of this bulletin.
APPLIED VEHICLES: 2013 JX35 (L50)
2014 – 2019 QX60 (L50)
APPLIED ENGINE:
Vehicles with V6 engine ONLY
SERVICE INFORMATION
A two-piece design front engine mount is currently being used for the Applied Vehicles listed.
A single thunk noise may be heard during the first few accelerations of the day from this type of mount, and is
considered normal operation.
The mount has also been designed with built-in free play that is normal.
Under normal driving conditions:
 A thunk noise may be heard during the first few accelerations of the day,
And
 Does not occur again, or at any other time.
DO NOT REPLACE THE MOUNT:
 If it has free play or a “single event” thunk sound during the first few accelerations of the day. This is
considered a normal characteristic of this type of engine mount.
 Allowable free play (vertical movement) is 5 mm.
 If a shift shock condition is present when shifting from Park into gear or between any combination of
gears. This condition is due to transmission line pressure and not movement of the mount.
 If a whistle type noise is heard. This is caused by a disconnected vacuum line.
NOTE: Refer to the appropriate section of the Electronic Service Manual (ESM) related to transaxles
for further diagnostic information on shift shock.
Warranty claims for front engine mount replacement due to a whistle noise or a mount that has 5 mm or
less free play will be denied.
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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AMENDMENT HISTORY
PUBLISHED DATE
REFERENCE
DESCRIPTION
November 19, 2014
ITB14-053
Original bulletin published
July 25, 2017
ITB14-053a
Changes were made throughout the bulletin
June 4, 2019
ITB14-053b
The Title has been changed, model years have been added
to APPLIED VEHICLES, and parts replacement parameters
have changed
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ITB14-053b