5 DEC 2007
NOTE: The information in Technical Bulletins is intended for use by trained, professional technicians with the knowledge,
tools, and equipment required to do the job properly and safely. It informs these technicians of conditions that may occur
on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be
performed by “do-it-yourselfers.” If you are not a Dealer, do not assume that a condition described affects your vehicle.
Contact an authorized Jaguar service facility to determine whether the bulletin applies to a specific vehicle.
© Jaguar 2007 Page 1 of 3 5 December 2007
THIS BULLETIN, ALONG WITH JTB00071, REPLACES JTB00040 VERSION 2,
DATED 31 JULY 2007
Transmission Noise During Gear Shifts – Repair Procedure
AFFECTED VEHICLE RANGE:
S-TYPE (X200) VIN: M45255 to N52047
Model Year: 2003 - 2005
XJ (X350) VIN: G00442 to G49700
Model Year: 2004 - 2005
XK8 (X100) VIN: A30645 to A48684
Model Year: 2003 - 2005
SQUAWK/CHIRP NOISE DURING TRANSMISSION GEAR SHIFTS
Situation: The customer may complain of a squawk noise from the automatic transmission when
changing into third gear. The noise may also occur on kick-down from fourth to third and sixth to third
gears. A squawk or chirp noise can also be heard when changing from third to fourth gear at 50%
throttle. The likely cause is that the 'E' clutch sticks and releases when engaging and disengaging
Action: Should a customer express concern about noise during gear shifts, follow the Repair
Procedure below to remedy it using the additive.
NOTE: The additive must only be used in the following cases:
• To fix a transmission noise during gearshifts (squawk).
• It must only be used once
in a transmission. The exception to the "use once" rule is if
the transmission has had a complete fluid change, where a second application may be
used on a customer complaint of transmission squawk.
NOTE: The additive must not be used in the following circumstances:
• It must not be used in an attempt to fix any other transmission concerns, for example
noises other than squawk, harsh transmission shifts, or Diagnostic Trouble Codes
(DTC) logged in the transmission control module.
• The additive must not be used on any cars from 2006 MY onwards starting with VINS
S-TYPE: N52048, XJ Range: H00332, New XK: ALL vehicles.
• The additive must not be used more than once in a transmission apart from the
exception described in the second bullet of the NOTE above.
• Do not use the additive as a preventative measure. It must not be used unless there is
transmission noise during gearshifts (squawk) present.