Aston Martin One-77 2010 Owner's Manual page 102

Driver Interface and Control
If repair or replacement of the steering or other
surrounding equipment is necessary, always refer
to your Aston Martin Dealer. If the centre position
of the steering deviates, the DSC system may not
operate correctly because there is a sensor in the
steering system which detects steering wheel
position.
The DSC system may not operate correctly when
using tyre chains or a temporary spare tyre.
Use tyres of the same manufacturer, brand,
tread pattern and correct size specified for this
vehicle on all four road wheels. Do not mix worn
tyres.
DSC has three modes of operation:
ON -
The DSC system sets to ON each time the engine
is started. DSC is controlling engine torque and
applying strategic application of the brakes at
individual wheels.
While the DSC system operates to correct the vehicle
stability the DSC symbol
cluster, will flash.
5.16
, on the instrument
TRACK MODE -
Press and hold the DSC button (A)
for four seconds and release. DSC TRACK MODE
SELECTED will show in the message centre (right) and
the DSC symbol will be ON in the instrument cluster.
This raises the thresholds at which the DSC system
operates. While the DSC system operates to correct
the vehicle stability the DSC symbol will flash.