brakes ASTON MARTIN DB AR1 Q 2003 Owners Guide

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-20
Bedding-In of New/Replacement Brake Pads
To ensure that brake pads and discs are correctly 'bedded-in' on new cars,
the factory road test the car and perform the following brake bedding-in
procedure:
1. Three light brake applications from 80-50 kph (50-30 mph) using normal
acceleration to 80 kph.
2. Three medium applications from 110-65 kph (70-40) mph using normal
acceleration up to 110 kph.
3. Two hard applications from high speed to 50 kph (30 mph), again using
normal acceleration.
4. Drive a further 8 km (5 miles) with minimal brake use.
5. Stop and allow the brakes to cool.
6. Drive a further 8 km (5 miles) back to the workshop with normal brake
use.
Aston Martin dealers are required to perform this routine each time brake
pads / discs are replaced.
Aston Martin require owners to perform this routine if pads or discs are
replaced by a non-franchised workshop who will not know of the correct
bedding in procedure.
Failure to bed-in the brake pads / discs will result in reduced brake
performance and possible brake judder or squeal.

F - Owner Maintenance
1-F-29 3. Raise the vehicle using a 'spectacle frame' type lifting device with a cradle
positioned under each front wheel as shown below.
Rear Suspended Tow
Caution: To prevent body damage ensure an adequate clearance is
maintained between the car body and (1) the ground and (2) the 'spectacle
frame' of the towing vehicle while your car is being towed.
1. Remove the ignition key from the ignition/steering lock.
2. Raise the vehicle using a 'spectacle frame' style lifting device where a
cradle is positioned under each rear wheel as indicated below.
Towing by Another Vehicle
WARNING: When the engine is stationary, there will be no power assistance to
the steering or brakes. Therefore be prepared for relatively heavy steering and
the need for greatly increased brake pedal pressure.
The vehicle may be towed short distances by another provided that a speed
of 48 km/h (30 mph) is not exceeded. Do not tow for more than 24km (15
miles). When being towed, the vehicles gear lever, or gear selector lever
(automatic transmission), must be in Neutral or position N with the ignition
key turned to position II to release the steering lock and to render the horn,
indicators and brake lights operational.

F - Owner Maintenance
1-F-40
Passenger Footwell Fusebox - Left Hand
F1 15A Accessory Terminal
F2 10A Transmission Control Module, Gearshift Interlock
Module, PRND Switch
F3 5A Headlamp Relay, Instrument Pack, Dimmer Unit
F4 10A Multi Function Unit, Air-Conditioning In-Car Sensor,
Anti-Lock Brakes Control Unit
F5 5A Traction Control Switch, Alternator Regulator, Heated
Front Screen Control
F6 10A Rear Fog Switch, RH Dip Beam
F7 30A Starter Relay
F8 10A LH Dip Beam
F9 20A LHS Seat Heater Relay, LHS Seat Module
F10 40A Heated Front Screen Controller
F11 10A RH Horn
F12 30A LH Rad Cooling Fan
F13 10A LH Horn
F14 30A RH Rad Cooling Fan
F15 30A Primary Powertrain Control Module RHS
F16 10A Multi-Function Unit, Central Locking Module, Air
Conditioning Control Panel, Alarm Sounder
F17 30A Secondary Powertrain Control Module LHS
F18 5A Interior Map Lights, Instrument Pack,
RH Rad Module
F19 10A RH Main Beam
F20 20A Window Lift Cut Out, Accessory Terminal,
Air Conditioning Clutch Relay
F21 10A Instrument Pack, LH Main Beam
F22 25A Front Fog Relay

F - Owner Maintenance
1-F-61 Carefully test drive the vehicle and check the operation of all functions.
WARNING: Braking performance can be impaired initially due to a fine film of
corrosion on the brake discs. Drive conservatively and, when safe to do so,
frequently apply the brakes until the discs have been deglazed. Full braking
performance should then be restored.

G - Specifications
1-G-1
Contents
Body ................................................................................................. 1-G-2
Engine ............................................................................................... 1-G-2
Power and Torque Graphs ................................................................. 1-G-3
Transmission - Manual....................................................................... 1-G-4
Transmission - Automatic ................................................................... 1-G-4
Final Drive ......................................................................................... 1-G-4
Steering ............................................................................................. 1-G-4
Suspension........................................................................................ 1-G-5
Brakes ............................................................................................... 1-G-5
Towing .............................................................................................. 1-G-5
Wheels and Tyres .............................................................................. 1-G-6
Exterior Features ................................................................................ 1-G-7
Interior Features ................................................................................ 1-G-7
Lights ................................................................................................ 1-G-8
Exterior Dimensions and Clearances.................................................. 1-G-9
Interior Dimensions .........................................................................1-G-10
Weights ........................................................................................... 1-G-10
Capacities........................................................................................ 1-G-11
Recommended Fluids ......................................................................1-G-12

G - Specifications
1-G-5
Suspension
Front - Independent double-wishbone, coil springs, monotube dampers
and anti-roll bar.
Rear - Independent double-wishbone (driveshaft and lower link), longitudinal
control arms, coil springs and mono-tube dampers.
Brakes
Teves Mk 20 anti-lock braking system with traction control.
Front - Geomet coated 355 mm diameter grooved steel discs with four pot
calipers and Pagid RS4-2-1 pads.
Rear - Geomet coated 330 mm diameter grooved steel discs with four pot
calipers and Textar pads and integral drum handbrake.
Towing
The DB AR1 is not engineered to tow any form of caravan or trailer.
No towing devices are approved for fitting to the vehicle, other than the front
towing eye to aid roadside recovery or loading of the car onto a transporter.

A - Service Schedules
2-A-6
Road Test
Engine
Clutch (manual only)
Manual transmission
Auto transmission
Rear axle differential
Steering
Brakes
Wheel balance
Dampers
Noise vibration or harshness
Air conditioning performance
Instruments operation
Seat belt and buckle operation
Steering wheel alignment
Traction control
Final Checks
Drive belt tensions
Fuel / brake pipe security
Fuel / fluid leaks
Cooling systems hose security
Exhaust catalyst security
Hand-over Preparation
Assemble / Check function of all keys
and key fobs
Clean bodywork
Clean off all transit labels
Valet Vehicle
Degrease windscreen
Fit carpets
Remove interior protection
Check Owner's Guide/Quick Guide
Check tools
Install license plates

Index
5-A-5
Seat Belt Fastening 1-A-14
Seat Belt Pretensioner 1-A-15
Securing a Child Seat (ALR System) 1-A-15
Special Warnings - Child Safety Restraints 1-A-19
Warnings 1-A-16
Seat Controls 1-A-12
Seat Heater 1-B-19
Security System
Arming the Alarm 1-E-4
Disarming the Alarm 1-E-4
Full Alarm Activation 1-E-5
Operation 1-E-3
Panic Alarm 1-E-5
Passive Anti-Theft System (PATs) 1-E-7
System Protection 1-E-4
Unlocking the Car 1-E-4
Security Systems 1-E-2
Servicing Precautions 1-F-2
Dangerous Substances 1-F-5
Engine Oils 1-F-5
Fuel Tank Filling 1-F-5
Protecting The Environment 1-F-5
Side and Headlight Switching 1-B-13
Side Repeaters 1-F-48
Specifications
Body 1-G-2
Brakes 1-G-5
Dimensions and Weights 1-G-9
Engine 1-G-2
Engine Oil 1-G-12
Final Drive 1-G-4
Interior Features 1-G-7
Lights 1-G-8
Performance 1-G-2
Recommended Fluids 1-G-12
Steering 1-G-4
Suspension 1-G-5
Transmission - Automatic 1-G-4
Transmission - Manual 1-G-4
Wheels and Tyres 1-G-6
Winter Tyre Pressure 1-G-6
Speedometer 1-B-11
Steering Column Controls 1-B-14
Steering Wheel 1-A-10
Rake 1-A-10