
11
1
Supra Owner's Manual
1-1. NOTES
NOTES
Control devices processdata to
operate the vehicle.
Thisdata includes, for example:
• Status messages of the vehicle
and its individual components,
for example wheel rotation
speed, wheel speed, decelera-
tion, lateral acceleration, fas-
tened seat belt indicator.
• Ambient conditions, for example
temperature, rain sensor signals.
The dataisonlyprocessedwithin
the vehicleitself and isusually tran-
sient. The data is not saved after
the vehicle is switched off.
Electronic parts,for example con-
trol devices and vehiclekeys,con-
tain components for saving
technical information. Information
on vehicle condition,component
load, maintenance requirements,
events or errors can be saved tem-
porarily or permanently.
This information generally docu-
ments the condition of a compo-
nent, a module, a system or its
environment, for example:
•Operating states of system com-
ponents,forexample, filllevels,
tyre inflation pressure, battery
status.
•Malfunctions and faults of impor-
tant system components, for
example, lights and brakes.
• Responses of the vehicle to par-
ticular driving situations, for
example triggering of an airbag,
activation of the drive stability
control systems.
• Information on vehicle-damag-
ing events.
The data is required so thatthe
control units can perform their func-
tions. It is also used for detecting
and rectifying malfunctions, and
helps the vehicle manufacturer to
optimise vehicle functions.
The majorityof this data is transient
and is only processed within the
vehicle itself. Only a small propor-
tion of the data is stored in event or
error memories in response to spe-
cificcircumstances.
When service workis being carried
out, for example repairs, service
operations, warranty work and
quality assurance measures, this
technical information can be read
out from the vehicletogetherwith
the vehicle identification number.
Any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer can read out the
information. The legally required
on-board diagnostics (OBD) socket
in the vehicle is used to read out
the data.
The data is collected, processed
and used by the relevant organisa-
tions in the service network. The
data documents the technical con-
ditions of the vehicle and helps in
locating errors, complying with war-
ranty obligations and improving
Operating data in the vehicle
Supra_OM_General_OM99U69E