wheel ASTON MARTIN DB AR1 Q 2003 Owners Guide

C - Driving
1-C-14
Gearshift Modes
Automatic Mode
When the gear selector lever is operated in the right half of
the selector gate ('A' showing in the instrument panel
display), the transmission is in Automatic mode.
The gearbox functions as a standard automatic five speed transmission. The
selector lever may be placed into the P, R, N or D positions. When D is
selected, gearshifts will be made automatically at points dependant on
vehicle speed, throttle position and engine load.
Sport Mode
The Sport mode can be selected by moving the gear selector
lever to the left from the 'D' position. The Sport warning lamp
on the instrument panel will illuminate on entering Sport
mode.
Sport mode may be cancelled by moving the selector lever back to the right
half of the selector gate to return to Auto mode. Sport mode is also cancelled
by selecting a gear in Touchtronic mode.
Touchtronic Mode
From the Sport position, Touchtronic mode is selected by any forward or
rearward movement of the selector lever or by pressing one of the steering
wheel gearshift buttons.
Any forward movement of the selector lever will engage the next higher
gear. Any rearward movement of the selector lever will engage the next
lower gear. The lever will return to the centre position after each movement.
In Touchtronic mode, all gearshifts are under driver control. The number of
the current gear appears in the digital selector display.

C - Driving
1-C-15 When at a standstill, Touchtronic mode is engaged by pushing the lever
forward or by pressing the '+' button on the steering wheel. The gearbox
controller will always initially select 2nd gear. If first gear is required, it may
be selected by pulling the lever rearwards or by pressing the - button on the
steering wheel.
When Touchtronic mode is engaged whilst driving, the transmission will
remain in the current gear. Gearshift control will revert from automatic to
manual control.
Touchtronic mode may be deselected whilst driving by moving the selector
lever to the right. The transmission will revert to Automatic mode and may
shift to a more appropriate gear.
Minimum Upshift Speeds
The transmission controller will only allow upshifts when vehicle speed is
above the following minimum limits:
Upshifts enabled 2nd to 3rd gear above 15 km/h (10 mph)
3rd to 4th gear above 35 km/h (22 mph)
4th to 5th gear above 52 km/h (32 mph)
During deceleration, if road speed falls below the minimum limit for each
gear, the transmission will automatically downshift to eliminate the possibility
of the engine stalling.
Gearshift Inhibit
In Touchtronic mode, any attempted gearshift which would cause the
engine speed to rise over 6,500 rpm, or fall below 1,300 rpm will be
prevented by the transmission controller.

C - Driving
1-C-17
Traction Control System
On/Off Switch
The traction control system is always operational when the ignition is
switched on. The traction control system can be switched off at any time
using the switch in the centre console.
Traction Control Warning Lamp
To ensure that the system is working correctly, a warning
lamp is integrated into the instrument panel. When the
ignition is switched on, the lamp should illuminate for
approximately 2 seconds and will then extinguish if the
system is in working order.
If the lamp remains on after 2 seconds, a system fault is present and should
be investigated by your Aston Martin Dealer.
During normal operation, the light remains off until wheel slip is detected.
The warning lamp will then flash whilst the system controls the wheel slip.
The warning lamp remains illuminated if traction control is switched off.

C - Driving
1-C-18Traction Control Operation
WARNING: In all cases it remains the drivers responsibility to drive safely
according to the law and with due regard to prevailing conditions. The fact that
a vehicle is equipped with Traction Control must never allow the driver to be
tempted into taking risks which could affect his/her safety or that of other road
users. The addition of Traction Control cannot overcome the consequences of
applying too much engine power for the prevailing conditions.
The traction control system is designed to limit engine power when driven
wheel slip is detected. This most commonly happens when accelerating on
a slippery road or loose surface.
The system uses the vehicles ABS sensors to monitor the wheel speed of all
four road wheels. As soon as a driven rear wheel starts to spin due to the
application of too much power for the available grip, the system automatically
reduces engine power by temporarily adjusting the fuel supply. The brake
on the slipping wheel will also be applied as necessary until the wheel speed
matches that of the other wheels.
During activation, the system warning light will flash. The driver may
experience a loss in power or temporary 'misfire' as engine power is
reduced. These symptoms are normal and will clear as wheel spin is
eliminated and normal engine power is restored.
If traction control cuts in when driving on extended icy or slippery surfaces,
reduce engine power as necessary until the traction control warning light is
extinguished.
Caution: Do not maintain engine power at such a level that traction control is
activated for long periods (more than about one minute). The reduced fuelling levels
to the engine will cause the exhaust catalysts to overheat. Overheating of the exhaust
catalysts can destroy them.

C - Driving
1-C-19
The Braking Systems
The Footbrake System
Your DB AR1 uses a vacuum boosted hydraulic braking system with anti-
lock (ABS) function. This system ensures braking performance in keeping
with the vehicle performance.
The Anti-Lock Braking System (ABS) is continually monitored for correct
operation whilst the ignition is switched on. Should a fault occur, it will be
signalled by the Anti-Lock Warning Light.
Brake System Safety Features
The brake system tandem master cylinder is designed so that in the worst
case (barring major accident damage), only half the brake system could fail.
Even in the event of a major brake pipe fracture, at least two wheels will have
fully operative brakes.

C - Driving
1-C-21
Anti-Lock Braking System (ABS)
The anti-lock braking system (ABS) fitted to the DB AR1 helps prevent the
road wheels from locking and skidding during emergency braking, helping
steering and directional stability to be maintained.
If, in an emergency braking situation, the braking force applied begins to
exceed the tyre/road adhesion, the ABS system is activated to prevent the
road wheels locking. When this happens a pulsating effect is felt through the
brake pedal. This is a normal ABS effect.
WARNING: In all cases it remains the drivers responsibility to drive safely
according to the law and with due regard to prevailing conditions. The fact that
a vehicle is equipped with ABS must never allow the driver to be tempted into
taking risks which could affect his/her safety or that of other road users. The
addition of ABS cannot overcome the consequences of trying to stop in too short
a distance, cornering at too high a speed, or the risk of aquaplaning - where the
tyres are prevented from contacting the road surface by a layer of water.
The driver should always take road conditions into account. A slippery road
surface always requires more braking distance for a given speed, even with ABS.
Possible extensions of stopping distance compared to locked wheels may occur
during ABS operation on slushy snow, gravel, sand or certain heavily corrugated
or ridged warning sections of road surfaces.

C - Driving
1-C-22
Brake Warning Indications During Driving
Your DB AR1 electronic control units continue to monitor correct operation
of the braking sub-systems while the vehicle is being driven. Two brake
warning lights are of particular importance.
The Anti Lock Braking (ABS) Warning Light
The ABS system is monitored for correct operation while the
ignition is switched on. If a fault is detected, the Anti-Lock
warning light will illuminate and the ABS system will be partly
or fully disabled.
The normal braking system will continue to function without anti-lock but
with full vacuum boosted braking to all road wheels being maintained. In
the event of an ABS fault, consult your Aston Martin Dealer immediately.
WARNING: If the ABS warning light illuminates, you should be aware that
wheels could lock during extreme braking or when braking on slippery surfaces.
Take additional care to avoid the danger of wheels locking.
The Brake System Warning Light
The braking system is continuously monitored for fluid level.
If only the brake warning light illuminates, it indicates that the
brake fluid has fallen below the acceptable level. It is essential
that the braking system is checked immediately, preferably
by an Aston Martin Dealer.
WARNING: If the brake warning light illuminates, you should
immediately be prepared for possible increased stopping distances
and possible partial failure of the braking system.

C - Driving
1-C-23
The Handbrake (Parking Brake)
The handbrake lever is situated on the outside of the drivers seat. The
handbrake operates on brake drums within the rear wheel brake discs.
To engage the handbrake, pull up firmly on the lever without pressing the
release button. The handbrake ratchet will latch and the handbrake warning
light will illuminate. Note that this lamp is the only indication that the
handbrake is applied. The lever can then be lowered to its fully down
position.
To release the handbrake, pull up on the lever against spring pressure, press
and hold the lock release button whilst lowering the lever to its maximum
down position.
The handbrake warning light extinguishes when the handbrake is fully
released.
Caution: Always check that the warning lamp is correctly extinguished before moving
off. Do not attempt to drive the vehicle if the warning lamp remains on.

D - Heating, Ventilation & Air Conditioning
1-D-3
Ventilation
The air from the air-conditioning system is fed into the passenger compartment
through a distribution system with several outlets. The diagram below
illustrates the principal outlet positions.
Face Level Vents
The face level vents are controllable and can be adjusted, horizontally or
vertically. Air supply to these vents is closed off in heating and defrost modes.
To direct the air from any of the face
level vents, rotate the central thumb
wheel left/right or up/down.

F - Owner Maintenance
1-F-1
Contents
Introduction........................................................................................ 1-F-2
Servicing Precautions ...........................................................................1-F-4
Fluid Level Checks ............................................................................... 1-F-6
Wheels and Tyres.............................................................................. 1-F-13
The Vehicle Toolkit ............................................................................ 1-F-18
Jacking and Wheel Changing............................................................. 1-F-22
Vehicle Recovery............................................................................... 1-F-26
Electrics .............................................................................................1-F-30
Fuse Boxes........................................................................................ 1-F-38
Bulb and Fuse Replacement ...............................................................1-F-42
Bodywork and Fittings....................................................................... 1-F-54
Vehicle Cleaning................................................................................ 1-F-54
Storing the Car - Recommendations ...................................................1-F-58