2009 JAGUAR XF Owners Manual

137
Transmission

AUTOMATIC TRANSMISSION
The transmission system is designed to
operate in two distinct modes, conventional
automatic and Jaguar Sequential Shift.
The automatic modes are accessed by the gear
selector:
•D - Drive - automatic shifting.
• S - Sport - sport automatic shifting.
The Jaguar Sequential Shift mode enables
sequential manual gear selection in D
(temporary) and S (permanent) modes, via the
steering wheel m ounted paddles.
Note: In addition to the st andard shift patterns
available in D and S, the transmission will
adapt to differing conditions by modifying shift
points, based upon vehicl e sensor information
for road gradient, cornering, braking pressure
and driving style.
JaguarDrive selector
The JaguarDrive selector elevates out of the
centre console when the engine is started, in
readiness for gear selection. Press the brake
pedal, then rotate the control to select the
chosen gear ( P, R , N or D) or, from D, press
down on the control and rotate to select S
(Sport).
CAUTIONS
Never select the Park ( P) position whilst
the vehicle is in motion. Doing so may
cause serious damage to the transmission.
Never select the Reverse ( R) position
whilst the vehicle is in forward motion.
Doing so may cause serious damage to the
transmission.
Never select a forward gear whilst the
vehicle is in rearward motion. Doing so
may cause serious damage to the
transmission.
Do not rev the engine or allow it to run
above normal idle speed while selecting
D or R, or while the vehicle is stationary with
any gear selected.
Do not allow the vehicle to remain
stationary for any length of time, with a
gear selected and the engine running. Always
select P or N if the engine is to idle for a
prolonged period.
E94119

Transmission
138

P should be selected before switching off the
engine. However, it is possible to switch the
engine off with R, D or S selected - the selector
will automatica lly select P, while retracting into
the centre console.
Note: If the engine is switched off with N
selected, the system will wait for 10 minutes
before selecting P. This procedure is to allow
the vehicle to be conveyed through a car wash
only and should not be used for vehicle
recovery purposes.
To prevent the transmission from
automatically selecting P (e.g. for vehicle
recovery purposes), it is necessary to activate
the Emergency Park Release.
See TRANSPORTING THE VEHICLE
(page 254).
Selector positions
P - Park: Use when parked. In this position the
transmission is locked, do not attempt to select
P if the vehicle is moving.
Note: P will be selected automatically when the
engine is switched off.
R - Reverse: Do not select if the vehicle is
moving forward.
N - Neutral: Disconnects drive to the wheels.
Use the parking brake when stopping
temporarily with N selected.
D - Drive: Gear changing is automatic for all six
forward gears. The shift points are determined
by accelerator pedal pos ition and road speed,
to provide the best ba lance of performance,
refinement and fuel economy, for the large
majority of driving conditions.
S - Sport: Gear changing is automatic for all six
forward gears, with modified gear shift points
to maximise the ve hicle response in
demanding driving condi tions. This mode is
not suitable for town or highway cruising. Note:
Both D and S positions also offer
additional features, wh ich are listed under
Automatic mode and Sport mode , later in this
section.
Stationary vehicle
When the vehicle is stationary, the selector
may be left in D or S, unless the vehicle is to be
parked. When stopping fo r extended periods,
either select P or apply the parking brake and
select N.
Selector interlock
The transmission is equippe d with an interlock,
to prevent inadvertent selection of a drive gear
(D , S or R) from the P or N positions. To
release the interlock to select a drive gear,
press the brake pedal while making the
selection.
Ensure the required driv ing range has selected
prior to releasing the brake pedal. The range
indicator ( R, D or S) on the selector and
message centre disp lays, will illuminate
continuously to confirm selection.
Note: If the brake pedal is released too early
during selector rotation from P or N to a driving
range ( R, D or S), then the selected range will
not be engaged. The selected range will flash
on the selector and message centre displays.
To obtain the selected range, press the brake
pedal, select P or N and reselect the required
range, ensuring the brake pedal is depressed.
If N is selected for less than 2 seconds (e.g.
when moving the selector between R and D),
the interlock will not ac tivate and the brake
pedal will not need to be pressed.
Note: The interlock is deactivated when the
vehicle is travelling at more than 5 km/h
(3 mph).

139
Transmission

If the selector fails to elevate
If the JaguarDrive selector is obstructed when
the engine is started, it may be prevented from
elevating out of the centre console. If this
occurs, turn off the ignition, ensure that the
selector is not obstruc ted and then start the
engine. The selector s hould elevate as normal.
If the selector still fails to elevate, even if there
is no obstruction, a faul t in the system is
indicated. The selector ca n still be used in the
lowered position, but be aware that it will not
automatically select P when the engine is
switched off, so P should be sele cted manually.
The fault should be re ctified by a Dealer/
Authorised Repairer at the earliest opportunity.
Starting
In the unlikely event that the selector did not
rotate back to P when the vehicle was
previously switched off, and the selector has
remained in R, D or S, it will not be possible to
start the engine. The vehicle will go to ignition
on. The selected range will flash and the
selector will now be unlocked, to allow the
driver to select P and start the engine.
Automatic mode
To select Drive (D) when the vehicle is
stationary:-
1. Apply the foot brake.
2. Rotate the gear selector to D.
When in D the transmission will automatically
select the most appropriate gear for the current
driving conditions.
Note: When a gear is selected the vehicle may
begin to move as soon as the foot brake is
released.
Kick-down
When D is selected and the accelerator pedal is
depressed fully, the transmission will
downshift to the lowest appropriate gear. Once
the accelerator pedal is returned to a normal
driving position, the tr ansmission will up-shift
to the highest appropriate gear.
Note: Kick-down operation will vary according
to road speed, current gear in use and
accelerator movement.
E94120

Transmission
140

Fast off
Activated when rapidly lifting off the
accelerator pedal and takes account of road
gradient. This feature inhibits up-shifts,
enhancing pe rformance.
Note: If Sport mode is selected, driver type
recognition will vary the activation of this
feature according to driving style.
Shift adapt under braking
Under braking, the transmission will vary the
down-shift point in proportion to braking effort
and road gradient. This feature works in
conjunction with the posit ive torque function,
resulting in a smoother down-shift.
Note: If Sport mode is selected, driver type
recognition will vary the activation of this
feature according to driving style.
Corner recognition
Inhibits up-shifts during cornering, to provide
improved vehicle balance.
Note: If Sport mode is selected, driver type
recognition will vary the activation of this
feature according to driving style.
Road gradient recognition
When the vehicle is being driven on an uphill
gradient, the transmission adapts the shift
pattern to make better use of engine power.
When driving on a long downhill gradient, the
transmission may automatically select a lower
gear, to increase engi ne braking. Selecting
Sport mode (S ) will increase the tendency of
the transmission to select a lower gear in these
conditions, further incr easing engine braking.
Note: It is also possible to manually select a
lower gear to increase e ngine braking via use of
the shift paddles.
Sport mode
To select Sport mode:
1. With the selector in D, push down on the
selector.
2. Rotate from D to S.
Note: When Sport mode is selected SPORT will
be displayed in the message centre, and the
selector indicator will illuminate.
Sport mode enhances th e responsiveness of
the transmission, to prov ide a sporting feel to
driving the vehicle. Sport mode is
recommended for over taking manoeuvres and
for when rapid progress is desired.
To return to automatic m ode move the selector
lever back to the D position. The D on the
selector display will illuminate to confirm that
automatic mode has been selected.
E94121
1
2

141
Transmission

Driver type recognition
In Sport mode, the transmission monitors
driving style and in combination with sensors
in the vehicle, varies the shift schedule,
fast-off, corner recognition and shift adapt
under braking functions, according to the
driving style.
Manual mode - Jaguar Sequential Shift
Shifts in the Jaguar Sequential Shift manual
mode are made using the steering wheel
mounted shift paddles and are optimised to
provide a rapid response to gear shift requests. Up-shift requests (
+) are optimised for
performance via the s hort shift function,
resulting in firmer feeling shifts than in
automatic mode. Down-shift requests ( -)
utilise a throttle blip duri ng the shift, resulting
in improved shift feel.
The Jaguar Sequential Shift manual mode can
be accessed either temporarily, or
permanently.
Temporary manual gear selection: When the
gear selector is in the D position, manual mode
may be directly accessed by the single action of
operating the steering wheel mounted shift
paddles.
This convenience feature allows immediate but
temporary use of the sh ift paddles when the
gear selector is in D.
If continued use of manua l mode is required,
the gear selector may be subsequently moved
to the S position to enter permanent manual
mode in the currently selected gear.
If the gear selector remains in the D position,
temporary manual mode will be held whilst the
driver is accelerating, decelerating, cornering
or continuing to request shifts via the paddles.
The transmission will revert to automatic
operation after a short pe riod of driving at
steady speed; alternatively the shift-up ( +)
paddle may be held for a short period
(approximately one second) to return directly
to automatic operation in D .
Permanent manual gear selection: Select the
S position, permanent manual mode is then
accessed by the operation of the steering wheel
mounted shift paddles.
The message centre will highlight the currently
selected gear.
E94122

Transmission
142

Note: When the transmission is set to
permanent manual mode (i.e. using the
paddles to change gear while in Sport mode)
and Dynamic mode is selected, transmission
up-shifts are fully controlled by the driver. This
means that the transmissi on will not change up
a gear automatically, even when the vehicle's
rev limit is reached. When the rev limit is
reached, the gear position indicator in the
message centre will glow amber, to indicate
that the next gear should be selected.
To exit from the Jaguar Sequential Shift
permanent manual mode, either pull and hold
the shift-up paddle for approximately one
second (to return directly to automatic
operation in S ), or rotate the gear selector to
the D position. The transmission will revert to
the D automatic shift mode.
Manual operation
To shift-up, briefly pull the shift-up ( +) paddle
on the right-hand side of the steering wheel
towards you.
To shift-down, briefly pull the shift-down
paddle ( -) on the left-hand side of the steering
wheel towards you.
The message centre display will change to
highlight the requested gear.
Note: The transmission will inhibit up-shifts
and down-shifts if the requested shift would
result in an engine speed outside the normal
operating range of the engine. If this occurs,
the message centre will briefly display the
requested gear selection, but will return to
displaying the current gear.
The Jaguar Sequential Shift mode also has the
following features: Kick-down:
Operation of kick-down in Jaguar
Sequential Shift mode will override the
currently selected gear. The lowest available
gear will be selected for maximum acceleration
and will be highlighted in the message centre
display. Subsequent manu al shifts may then be
selected as usual.
Positive torque: Provides throttle blips on
down-shifts, improving shift feel and response.
Shift assist: The transmission will
automatically up-shift at the engine speed
redline in Jaguar Sequential Shift mode, as if
commanded manually.
The transmission will automatically
down-shift, when the engine speed drops too
low for the currently selected gear.
When the vehicle approaches, or comes to
rest, second gear is au tomatically selected.
Subsequent pull-aways will occur in second
gear, unless the accelerator pedal demand is
high or a down-shift is manually selected, in
which case, first gear will be selected.
In all cases the message centre will display the
current gear.
Note: During sustained braking, if a down-shift
is selected at a speed which would result in the
engine speed exceeding its normal operating
range, the gear change wi ll be indicated in the
message centre, but the down-shift will be
delayed until the vehi cle speed has reduced
sufficiently for the gear selection to be made,
without causing the engine speed to exceed its
normal operating range.

143
Transmission

Limp-home mode
Note: The driver should be aware that the
vehicle’s performance will be reduced and
must take this into account when driving. Also
the use of the Jaguar Sequential Shift paddles
will be disabled. In this event, seek qualified
assistance as soon as possible.
In the unlikely event of an electrical or
mechanical failure, tran smission operation will
be limited. The vehicle gear selector ranges P,
R , N , D and S may still be used to enable the
vehicle to be driven to a safe area.
Some faults will cause the selector to be locked
in position until the igniti on is switched off. If
the selected range flashes, it signifies that the
driver request cannot be engaged. Re-select N
and repeat the attempt.
If the transmission is still unable to select the
requested gear, contact your Dealer/
Authorised Repairer.
Message centre display
The message centre will confirm the
JaguarDrive selector pos ition (selected gear). Selector position is sh
own highlighted at the
top of the message cent re and confirmed by
the dot on the circular representation of the
selector.
If manual mode is se lected, the numbers 1 to 6
appear at the top of the display, with the
currently selected gear highlighted.
Note: With the transmission set to permanent
manual mode and Dynamic mode selected,
when the rev limit is re ached, the gear position
indicator in the message centre will glow
amber, to indicate that the next gear should be
selected.
The message centre may also display the
following messages with associated warning
indicators:
ENGINE SYSTEMS FAULT (Red)
RESTRICTED PERFORMANCE (Red or Amber)
GEARBOX FAULT (Amber)
If any of these messages are displayed it is
likely that loss of power or driveability will be
experienced. Seek qualified assistance as soon
as possible.
A
km
l/100km
JAG1629

Brakes
144

PRINCIPLE OF OPERATION
Brake pads
Brake pads require a period of bedding in when
new. Drive with extra caution for the first
500 km (300 miles) to avoid the need for heavy
braking.
Brake pad wear warning
When the brake pads are wearing low, the
warning message BRAKE PADS LOW is
displayed in the message centre. Arrange for
your vehicle to be se en by your Dealer/
Authorised Repairer at the earliest opportunity.
Wet conditions
Driving through heavy ra in or water can have
an adverse effect on braking efficiency. Under
such circumstances, it is recommended that
you lightly a pply the brakes intermittently to
dry the brakes.
ABS warning indicator
If this amber warning indicator
illuminates while driving and/or
ABS FAULT is displayed in the
message centre, drive with extra caution, avoid
heavy braking where possible, and seek
qualified assistance as soon as possible.
If this red warning indicator
illuminates while driving and/or the
message LOW BRAKE FLUID is
displayed in the message centre, check the
brake fluid level at the earliest opportunity and
top-up as required. See BRAKE FLUID CHECK
(page 206).
HINTS ON DRIVING WITH ABS
ABS (Anti-Lock Braking System) allows
maximum brake pressure, and thus maximum
braking efficiency, to be applied, and prevents
the road wheels locking. This allows the driver
to retain steering control during heavy braking
under most road conditions.
ABS optimises tyre to road adhesion under
maximum braking conditions, though it cannot
provide increased cornering ability.
WARNINGS
Do not rest your foot on the brake
pedal whilst the vehicle is in motion.
This may cause a light application of
the brakes, which can result in overheating,
reduced brake performance, and excessive
brake wear.
Never allow the vehicle to coast
(freewheel) with the engine turned
off. The engine must be running to
provide full braking assistance. The brakes will
still function with the e ngine off, but far more
pressure will be required to operate them.
If the red brake warning indicator
illuminates, safely bring the vehicle to
a stop, as quickly as possible. Seek
qualified assistance before proceeding.
Never place non-approved floor
matting or any ot her obstructions
under the brake pedal. This restricts
pedal travel and braking efficiency.
WARNINGS
ABS cannot overcome the physical
limitations of braking distance. Nor
can it overcome the lack of grip on a
road surface (e.g. aquaplaning on water).
Braking distance is increased on a
slippery surface. This applies to all
vehicles, even those fitted with ABS.
The driver should not be tempted to
take risks when driving, in the hope
that ABS will correct errors of
judgement. In all cases it remains the driver's
responsibility to driv e with due care and
attention, payi ng particular attention to the
effects of speed, weather, road conditions etc.