Jaguar XK. Service manual - part 43

 

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Jaguar XK. Service manual - part 43

 

 

175

Driving hints

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Driving hints

BREAKING IN

Apart from a few precautionary 
recommendations, there are no strict 
running-in procedures for this vehicle.

By observing the following advisory 
precautions you will ensure maximum 
engine, transmission and brake life for 
your vehicle:

Engine

• Allow the engine to reach operating 

temperature before operating at 
engine speeds over 3 500 rev/min.

• Vary the speed frequently.
• From 1 500 kilometres (940 miles) 

onwards, gradually increase 
performance of the vehicle up to the 
permitted maximum speed.

Engine oil consumption

A certain amount of oil consumption is 
normal. The rate of consumption will 
depend on the following:
• The quality and viscosity of the oil.
• Climatic conditions.
• The speed at which the engine is 

being operated.

• Road conditions.

Drivers should expect above normal 
consumption when the engine is new, 
and after running-in if high speeds are 
sustained.

Brakes

To ensure that brake pads reach their 
optimum wear and performance 
condition, usually within 480 kilometres 
(300 miles), observe the following points 
are recommended.
• Where possible, avoid heavy braking 

as this can result in damage to the 
brake pads and discs.

• Avoid prolonged use of the brakes, 

for example, when descending 
severe gradients.

• Frequent light application of the 

brakes is desirable. This helps to fully 
bed-in the brake pads.

Final drive unit

During the first 1 500 kilometers (940 
miles):
• Avoid full throttle applications and do 

not exceed 190 km/h (120 mph). 
Observe the national speed limits in 
the country in which you are 
travelling.

• Do not participate in motor racing 

events, test track days, sports driving 
schools or similar for the first 8 000 
kilometers (4 975 miles).

ECONOMICAL DRIVING

There are two main factors which 
influence fuel economy, the way the 
vehicle is driven and maintenance.

Driving tips for economy

• Avoid unnecessary journeys, 

especially short stop-start trips.

• Accelerate smoothly and gently from 

a stand still.

Driving hints

176

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• Allow time to brake gently and 

smoothly.

• Be aware of traffic and road 

conditions ahead, and take action in 
time to avoid hard braking or 
acceleration.

• When stationary apply the park 

brake, and select neutral.

• Turn off the air conditioning when not 

needed.

Maintenance and fuel economy

Regular servicing by a Jaguar Dealer, 
along with regular checks by the driver 
are essential for vehicle longevity and fuel 
economy.

The condition of the engine (oils, filters, 
spark plugs, settings etc.) tire pressures, 
and wheel alignment, will all have a 
bearing on fuel economy. For this reason 
it is essential that the vehicle is checked 
regularly by the driver, and serviced by an 
approved Jaguar Dealer at the correct 
intervals.

Note: If you are in any doubt about the 
maintenance requirements, intervals, or 
checks required, contact your Jaguar 
Dealer for advice.

177

Cruise control

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Cruise control

PRINCIPLE OF OPERATION

Cruise control enables the driver to 
maintain a constant road speed without 
using the accelerator pedal. This is 
particularly useful for motorway cruising, 
or for any journey where a constant 
speed can be maintained for a lengthy 
period.

The cruise (speed) control system can be 
used by the driver to maintain a selected 
vehicle speed above 30 km/h (18 mph).

Adjustment controls on the steering 
wheel allow the driver manual control of 
the system. Brake operations also 
influence the cruise control system.

 1. The speed adjustment control thumb 
wheel is used to engage cruise control 
initially by rolling it upwards. It is also 
used to increase (+) or decrease (-) the 
set speed until the desired speed is 
obtained.

2.CANCEL - Cancels cruise control but 
retains the set speed in memory.

3RESUME - Resumes the cruise control 
set speed after it has been cancelled.

USING CRUISE CONTROL

Setting vehicle speed

When you are travelling at the speed you 
require, which must be above 30 km/h 
(18 mph), roll the speed adjustment 
control 1 upwards or downwards to 
increase or decrease speed.

Cruise control will engage and maintain 
the set speed and you can remove your 
foot from the accelerator pedal.

Note: Cruise control will automatically 
disengage when the brake pedal is 
pressed or when the vehicle speed falls 
below 30 km/h (18 mph).

Changing the speed

There are two ways to change the set 
speed:
• Accelerate or decelerate to the 

desired speed then roll the speed 
adjustment control upwards (+).

• Increase or decrease the speed by 

rolling the speed adjustment control 
upwards (+) or downwards (-) until the 
desired speed is obtained.

1

2

3

E91491

WARNING

Only use cruise control when 
conditions are favourable, for 
example, straight, dry, open roads 

with light traffic.

E91492

Cruise control

178

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Note: The set speed can be increased or 
decreased in steps of 2 km/h (1 mph) by 
rolling the speed adjustment control 
upwards (+) or downwards(-) briefly until 
the desired speed is obtained.

Resuming the speed

If the vehicle is accelerated above the set 
speed, then the set speed will be 
resumed when the accelerator pedal is 
released.

If CANCEL is pressed, or the brake pedal 
is pressed, the cruise control will 
disengage but the set speed memory will 
be retained. Press RESUME and the 
vehicle will return to the set speed.

Note: Cruise control will not resume at 
speeds below 30 km/h (18 mph).

RESUME will not operate if the ignition 
has been turned OFF.

Cruise control will switch OFF and clear 
the memory when:
• The ignition system is switched OFF.
• A fault occurs. The cruise control 

system will switch OFF and cannot be 
used until the fault is cleared.

Automatic switch off

Cruise control will switch off but the set 
speed will remain in the memory when:
• The CANCEL button is pressed.
• The brake pedal is pressed.

• Speed falls below 30 km/h (18 mph).
• Neutral, Park or Reverse gear 

positions are selected.

• Dynamic Stability Control is 

operating.

• The difference between the actual 

and set speed is too great.

• When the vehicle reaches a maximum 

speed of 192 km/h (120 mph).

• The accelerator pedal is used to 

accelerate beyond the set speed for 
too long a period.

CAUTIONS

RESUME should only be used if the 
driver is aware of the set speed and 
intends to return to it.

It is not recommended to resume 
set speed when a low gear is 
selected as excessive engine 

speeds will occur.

 

 

 

 

 

 

 

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