2010 ASTON MARTIN V8 VANTAGE suspension

Road Wheels and Tyres (04.04)
Suspension (04.00)4-4-6 Workshop Manual May 2007
Ty r e D a m a g e
Vehicle vibrations Tyres and wheels mismatched Install correct tyre and wheel combination.
Inflation pressure too high or too lo w Correct pressure to specification
Uneven tyre wear Refer to Diagnosis and Testing .
Out-of-balance wheel, tyre, wheel hub
or disc assembly Determine the out-of-balance component and
balance or install a new part.
Damaged or distorted wheel from road
impact hazard or incorrect handling Install a new wheel.
Excessive radial runout Install a new wheel or tyre. Check for incorrect wheel and tyre specifications.
Excessive lateral runout Install a new wheel or tyre.
Incorrectly seated tyre Remount the tyre.
Loose wheel mountings - damaged
wheel studs, wheel nuts, worn or
broken wheel hub face or foreign
material on mounting faces Tighten or install new parts. Clean mounting
surfaces.
Defective wheel bearings Install a new bearing set.
Brake disc imbalance
Water in tyres Remove water.
Loose engine or transmission mounts Install new mount nuts / install new mounts.
Incorrect front end alignment Align front end.
Loose or worn driveline or suspension
parts Repair or install new parts.
Excessive driveshaft runout or
imbalance Install a new driveshaft.
Worn or damaged flexible drive joint Install a new driveshaft.
Damaged wheel hub stud
threads Sliding wheel across the wheel studs
during installation. Loose wheel nuts
Install new wheel studs.
Broken wheel studs Loose or over tightened wheel nuts Install new wheel studs.
Corrosion and contamination
streaks from the wheel hub
wheel stud holes Loose wheel nuts Check complete assembly. Install new parts.
Damaged wheel nuts Loose wheel assembly Install new wheel nuts.
Over-tightened wheel nuts Install new wheel nuts.
Frozen wheel nuts Corrosion or galling If corrosion is light, wire brush away corrosion.
If corrosion is excessive install new wheel studs
and wheel nuts.
SymptomPossible Source(s):Action(s)
SymptomDescription
Age Deterioration Cracking and crazing of the tread and side wall rubber, sometimes accompanied by carcass
deformation. An indication that the tyres have been in service for a very long time.
Neglected Cut Damage through accidental cuts or penetrations will extend in use due to continued flexing and /
or ingress of moisture and road matter.
Impact Fracture Resultant damage from impact fractures is not always visible externally and, therefore, as a safety
precaution the tyre should be removed and examined.
Casing fracture caused by severe localized impact through driving over kerbs, hitting potholes
and / or objects in the road.
A double fracture caused by crushing the side wall of the tyre between an object and the rim
flange.
In both instances, such damage can lead to sudd en and dangerous tyre deflation some time after
the impact occurred.

Road Wheels and Tyres (04.04)
Suspension (04.00)
May 2007 Workshop Manual 4-4-7
Repairs
In view of the high performance capability of the vehicle,
damaged tyres should be renewed and not repaired.
Care of Alloy Road Wheels
Aluminium alloy road wheels are covered with a protective
coating. To prevent corrosion it is essential that this coating
is not damaged. When removing or installing tyres only
equipment utilizing spigot or stud hole clamping must be
used. The equipment must not have any moving parts which
contact the road wheel, and ty re levers must not be used.
To clean road wheels use warm soapy water; stubborn stains
can be removed using a soft brush or by using a proprietary
alloy road wheel cleaner.
Road Wheel Alignment
It is important that correct road wheel alignment be
maintained. Misalignment causes tyre tread to be scrubbed
off laterally because the natural direction of the road wheel
differs from that of the vehicle.
A sharp ‘fin’ protrusion on the edge of each pattern rib is a
sure sign of misalignment.
• ‘Fins’ on the inside edges of the pattern ribs, particularly on the nearside tyre, indicate Toe-in.
• ‘Fins’ on the outside edges, particularly on the offside tyre, indicate Toe-out.
With minor misalignment, the ev idence is less noticeable
and sharp pattern edges may be caused by road camber
even when the road wheel alignment is correct. In such
c a s e s i t i s b e t t e r t o m a k e s u r e b y c h e c k i n g w i t h a n a l i g n m e n t
gauge. Road camber affects the direction of the vehicle by
imposing a side thrus t and , if le ft to follow its natural cou rs e,
the vehicle will drift towards its nearside. This is instinctively
corrected by steering towards the road centre and, as a
result, the vehicle runs crab wise. The diagram shows why
nearside tyres are very sensitive to too much Toe-in and
offside tyres to Toe-out. It also shows why sharp ‘fins’ appear on one tyre but not on
the other, and why the direction of misalignment can be
determined by noting the position of the ‘fins’. Severe
misalignment produces clea
r evidence on both tyres.
Front road wheels on a moving vehicle should be parallel.
Tyre wear can be affected noticeably by quite small
variations from this condition. It will be noted from the
diagram that even with parallel road wheels, the vehicle is
still out of line with its dire ction of movement, but there is
less tendency for the wear to be concentrated on one tyre.
The near front tyre sometimes persists in wearing faster and
more unevenly than the other tyres, even when the
mechanical condition of the vehicle and tyre maintenance
are satisfactory. The more severe the average road camber,
the more marked this tendency will be.
Caution
When a new tyre is installe d, always renew the tyre
valve.

Road Wheels and Tyres (04.04)
Suspension (04.00)4-4-8 Workshop Manual May 2007
Misalignment Effects
Alignment Precautions
The following alignment precau tions should be observed:
1. The vehicle should have come to rest from a forward movement. This ensures, as fa r as possible, that the road
wheels are in natura l running positions.
2. It is preferable for alignment to be checked with the vehicle laden (Refer to

Road Wheels and Tyres (04.04)
Suspension (04.00)
May 2007 Workshop Manual 4-4-9
Tyre Pressure Sensing (Option)
Tyre pressure sensing monitors the vehicle tyre pressures
and feeds-back this info rmation to the driver.
Each road wheel is installed with a tyre pressure sensing
device which sends tyre pressu re information to a control
unit mounted in the centre, rear wall of the boot.
The control unit provides a
visual warning by illuminating
the tyre pressure warning lamp
(A) on the instrument panel if
any tyre pressure falls below
specification.
Pressure Sensing
with Winter Wheels
and Tyres
If the tyre pressure sensing option is installed on the vehicle,
the winter road wheel and tyre option with the tyre pressure
sensing system should be installed. The tyre pressure sensing
system will need to be programmed to recognize additional
tyres.
Wa r n i n g s
WAR NI NG
TYRE PRESSURE SENSING IS NOT INTENDED TO REPLACE DRIVER AWARENESS OF TYRE
PERFORMANCE OR THE NEED FOR RECOMMENDED WEEKLY CHECKS ON TYRE CONDITION AND
PRESSURE.
Each pressure sensing device
has a colour coded collar.
Ensure the coloured collars
are always installed in their
original positions, i.e. after
new tyres are installed.
Road wheelColour
Front right
Front Left
Rear Right
Rear Left Green
Red
Blue
Yellow
Instrument
Cluster
Lamp constant / Message ‘Check Tyres’.
Fault
Tyre pressure below specification.
Action
Reduce speed to 48 km/h (30 mph). Stop in safe place as
soon as possible.
One of the coloured LEDs on the control module will
illuminate to indicate which tyre requires inflating . The
LED colour corresponds to th e colour of the band below
each tyre valve cap. Inspect affected tyre. Re-inflate if
necessary. If on inspection the tyre is found to be OK,
continue at 48 km/h (30 mph) maximum.
Ensure that the coloured band remains in position.
Instrument
Cluster Lamp constant / Message ‘Check Tyres’.
Fault
Tyre transmitter fault.
Action
Reduce speed to 48 km/h (30 mph). Stop in safe place as
soon as possible.
Inspect affected tyre. Re-inflate if necessary.
If on inspection the tyre is found to be OK, continue at 48
km/h (30 mph) maximum.
Instrument
Cluster Lamp constant / Message ‘Tyre system
Fault’
Fault
Control module fault.
Action
Stop in safe place as soon as possible.
Check all tyres for flats. If OK, continue at 48 km/h (30
mph) maximum.

Road Wheels and Tyres (04.04)
Suspension (04.00)4-4-10 Workshop Manual May 2007
Display Unit
The display unit provides additional features when correctly
connected to a previously installed ‘Smartire’ system. The
display unit connects directly to the front of the basic
‘Smartire’ receiver and is powered from the vehicle circuits.
The display will be fully illu minated during use but will go
into ‘Energy Saver’ mode when no activity is detected.
Display Panel
Connection and Normal Operation
1. Remove the front bezel of the Pressure Sensor Receiver. Install the extension lead to the display unit and to the
receiver module. Turn on the ignition.
All icons will illuminate briefly and then extinguish
leaving only the vehicle outline.
2. When tyre pressure data is received, (drive the vehicle
or spin the road wheels), all the road wheel icons will
appear. Press the Tyre icon to access the recorded data
for each of the four road wheels.
3. Press the Mode button to scroll through the pressure, temperature and pressure deviation readings for the
selected tyre. 4. If any tyre pressure sensor is defective, the display will
show three dashes to indicate the absence of data for
that tyre.
5. To return to normal mode, press the SET button.
System Programming
The system may be programmed by the user on three
different levels. Enter Progra mming Mode by pressing the
‘Set’ button:
• 2 seconds to enter level 1
• 5 seconds to enter level 2
• 10 seconds to enter level 3
The following parameters ma y be set in each level:
Level 1 Programming
Cold inflation pressure
1. Press ‘Set’ for 2 seconds to enter level 1 programming .
2. Press ‘Tyre’ to select the front or rear axle. Front or rear
tyres will be highlighted.
3. Press ‘Mode’ to show the current value. Press ‘Tyre’ to increase or ‘Mode’ to decrease the current value.
4. Press ‘Set’ to save the new values.
5. Repeat steps 2 - 4 to set the cold inflation pressure for other the axle.
Programmed wheel position No data
Data received
Alarm light Low pressure warning
Alert indicatorLearn mode MODE button
Set button
Tyre rotation program
Cold pressure program
Programming mode
Towing vehicle indicator
Numerical display
Units of pressure or temperature TYRE button
36-5-038
36-5-039
Level 1
• Cold Pressure
• Tyre Rotation
• Low Pressure Warning
• Pressure Deviation
• High Temperature Alert
•Units Selection
Level 2 •Slope
• Learn Transmitter ID
Level 3 • Low Pressure Alert
PSI
36-5-045

Road Wheels and Tyres (04.04)
Suspension (04.00)
May 2007 Workshop Manual 4-4-11
Tyre Rotation
1. Press ‘Set’ for 2 seconds to enter level 1 programming .
2. Press ‘Mode’ repeatedly until ‘Tyre Rotation’ icon is displayed.
3. Press ‘Tyre’ to scroll to a tyre position. Press ‘Mode’ to display the current sensor identity.
4. Ensure that the road wheels and tyres are installed in the correct locations (see the colour code list above). Note
the correct code number for each road wheel.
5. Use ‘Tyre’ or ‘Mode’ to co rrect the sensor identity code
if required.
6. Repeat for the remaining tyres.
7. Press ‘Set’ twice to exit the programme.
Low Pressure Warning
1. Press ‘Set’ for 2 seconds to enter level 1 programming .
2. Press ‘Mode’ repeatedly until ‘Flat Tyre’ icon is displayed.
3. Press ‘Tyre’ to scroll to th e desired axle. Press ‘Mode’ to
display the current low pressure warning value. 4. Press ‘Tyre’ to increase or
‘Mode’ to decrease current
value.
5. Press ‘Set’ to enter the new value into memory.
Pressure Deviation Alert
This function sets the threshold for warning of a deviation
from normal tyre pressures.
1. Press ‘Set’ for 2 seconds to enter level 1 programming .
2. Press ‘Mode’ repeatedly until the ‘+-’ icon is displayed.
3. Press ‘Tyre’ to display the current value.
4. Press ‘Tyre’ to increase or ‘Mode’ to decrease the
current value
5. Press ‘Set’ to save the amended value.
6. Press ‘Set’ again to revert to normal operation.
High Temperature Alert
1. Press ‘Set’ for 2 seconds to enter level 1 programming .
2. Press ‘Mode’ until ‘ale rt’ icon is displayed.
3. Press ‘Tyre’ to display the current value of the high temperature alert.
4. Press ‘Tyre’ to increase or ‘Mode’ to decrease current
value
5. Press ‘Set’ to save the amended value.
6. Press ‘Set’ again to return to normal mode.
Units Selection
Use this function to select the combination of units for
pressure and temperature.
WAR NI N G
THE ROAD WHEELS AND TYRES ARE ASYMMETRICAL AND DIFFERENT SIZES FRONT AND REAR. THEY
MUST NOT BE ROTATED FRONT TO REAR. THIS FUNCTION SHOULD BE USED ONLY TO VERIFY
CORRECT TYRE POSITION. DO NOT CHANGE THE PROGRAMMED DATA.
Each sensor is identified by th e colour of a washer on the
tyre valve. Tyres are always in stalled in fixed positions and
must remain as follows:
• Right Front - Green (Code 1)
• Left Front - Red (Code 2)

Road Wheels and Tyres (04.04)
Suspension (04.00)4-4-12 Workshop Manual May 2007
1. Press ‘Set’ for 2 seconds to enter level 1 programming .
2. Press ‘Mode’ until pressure / temperature units are displayed.
3. Press ‘Tyre’ to enter ‘Units Selection’ mode.
4. Use ‘Tyre’ or ‘Mode’ to scroll through four combinations of pressure / temperature units.
5. Press ‘Set’ to save the selected combination of units.
6. Press the ‘Set’ button again to revert to normal mode.
Level 2 Programming
Slope
Sets rate of pressure change for tyres in use. This parameter
is set at manufacture and is specific only to the
recommended tyres for DB9.
1. Press ‘Set’ for 5 seconds to enter level 2 programming .
2. Press ‘Tyre’ until the desired vehicle axle is displayed.
3. Press ‘Mode’ to display the current SLOPE entry (DB9 is set at?)
4. If required, use ‘Tyre’ to increase or ‘Mode’ to decrease current value.
5. Press ‘Set’ to save the final value.
6. Press ‘Set’ again to return to normal mode.
Transmitter Learn Mode
This mode is used to add or delete transmitters from the
system memory. It is vital that transmitter signals are
correctly recognised to avoid system reaction to other
transmitters (e.g. from passing vehicles with similar sensors).
1. Remove a Redundant Transmitter 1.1 Press ‘Set’ for 5 seconds to enter level 2 programming .
1.2 Press ‘Mode’ to select ‘Transmitter Learn’ mode.
1.3 Press ‘Tyre’ to display possible tyre positions (filled rectangles represent currently programmed
transmitters).
1.4 Press ‘Tyre’ to scroll to the desired position.
1.5 To delete a transmitter, press the ‘Mode’ once.
1.6 If required, scroll to other positions using ‘Tyre’ and, if required, delete any other transmitters using
‘Mode’ button. 2. Add new Transmitters.
2.1 Press ‘Set’ for 5 seconds to enter level 2 programming .
2.2 Press ‘Mode’ to select ‘Transmitter Learn’ mode.
2.3 Press ‘Tyre’ to display possible tyre positions (filled rectangles represent currently programmed
transmitters).
2.4 Press ‘Tyre’ to scroll to the desired position. The chosen road wheel icon will flash.
2.5 Program a new transmitter by either:
2.6 Vigorously shaking the transmitter (bounce the road wheel on the ground) to promote a transmission.
2.7 Inflate or deflate the tyre by more than 3 psi (0.2 bar).
2.8 Press ‘Tyre’ to scroll to the next position. Repeat steps 4 and 5 as required to programme additional
transmitters.
2.9 Press ‘Set’ to save the new transmitter data and to exit ‘learn’ mode. If no error is found, the system will
return to ‘normal’ mode.
Level 3 Programming
Low Pressure Alert
1. Press ‘Set’ for 10 seconds to enter level 3 programming .
2. Press ‘Tyre’ button to scroll to the desired axle.
3. Press ‘Mode’ to view the current low pressure alert value.
4. Press ‘Tyre’ to increase the current value or press ‘Mode’ to the decrease current value.
5. Press ‘Set’ to save when the desired value is reached.
6. Repeat steps 2 to 5 until the Low Pressure Alert Level has been set for all road wheels.
7. Press ‘Set’ button to exit this mode.
8. Press the ‘Set’ button again to return to normal mode.
36-5-052
The unit will ‘beep’ when ne w transmitter is recognised.
36-5-051

Steering Gear (11.01)
Steering (11.00)11-1-2 Workshop Manual Issue 5, January 2010
Steering (11.00)
Steering Gear (11.01)
Diagnostics - Symptom Chart
11-01-001
Upper Cowl Lower Cowl
Steering Column
Steering Angle Sensor
Bulkhead Seal
Intermediate Shaft
Pressure Transducer Pinion Extension Shaft
Cooling Loop Switch Gear Assy
Fluid Reservoir
Steering Gear Track Rod Ends
SymptomPossible CauseAction
Vehicle wanders
from side to side on
the road when
driven straight
ahead with the
steering wheel held
firmly. Incorrect tyre size or pressure. Check for correct tyre size.
Adjust tyre pressures.
Vehicle unevenly loaded or overloaded. Adjust load.
Loose or worn tie-rods or tie-rod ends. New tie-rod end or steering gear.
Steering gear bolts loose or damaged. Tighten. New bolts.
Loose or worn suspension ball joint(s). New suspension ball joint assembly.
Steering column universal joint pinch bolt
loose. Tighten pinch bolt.
Incorrect toe adjustment. Adjust as required.
Loose or worn rear suspension. Tighten if loose. New rear suspension components.
Insufficient Castor. Check fr ont suspension geometry.