Aston Martin DB 9 2010 Manual page 101

Traction Control
Warning: It is the drivers responsibility to drive safely
according to the law and with due regard to prevailing
conditions.
Warning: Traction Control must never allow the driver to be
tempted into taking risks which could affect his or her safety or
that of other road users.
Warning: Traction Control cannot overcome consequences
of applying too much engine power for prevailing conditions.
Do not maintain engine power at such a level that traction
control is operated for long periods (more than about one
minute). This reduces fuel to the engine and may cause the
exhaust catalysts to overheat. Overheating of the exhaust catalysts
can destroy them.
Traction control is a function of DSC, and is operated in association
with the DSC system. Traction control prevents excessive wheel spin
at standing starts, or during acceleration. Wheel spin is usually caused
by excessive use of the accelerator pedal, or slippery, loose or bumpy
road surfaces.
To prevent excessive wheel spin and maintain vehicle stability in such
situations the traction control system will:
• Brake either of the driven wheels when they start to slip
• And, or, adapt the engine torque to a level corresponding to the
traction available on the road surface
These symptoms are normal and will clear as wheel spin is
eliminated and normal engine power is restored.
If Cruise Control is engaged it will automatically disengage when
traction control is operating.
During operation, the DSC warning symbol will flash. The driver may
experience a loss in power or temporary 'misfire' as engine power is
reduced.
If traction control cuts in when driving on extended icy or slippery
surfaces, reduce engine power as necessary until the DSC warning
symbol goes OFF.
Traction control is always operational when DSC is ON.
5.15