System Activation - Alfa Romeo 2015 4C Owner's Manual

176 STARTING AND OPERATING
WARNING! (Continued)
vehicle modification or poor vehicle maintenance
that reduces the effectiveness of the ESC system can
increase the risk of loss of vehicle control, vehicle
rollover, personal injury and death.
The ESC system uses sensors installed on the car to
determine the trajectory that the driver intends to follow
and compares it with the car's effective trajectory. When
the real trajectory deviates from the desired trajectory, the
ESC system intervenes to counter the car's understeer or
oversteer.
• Oversteer: occurs when the vehicle is turning more
than it should according to the angle of the steering
wheel.
• Understeer: occurs when the vehicle is turning less
than it should according to the angle of the steering
wheel.
This vehicle's advanced electronic brake control system
also includes: Electronic Brake Distribution (EBD), Anti-
Lock Brake System (ABS), Cornering Brake Control Sys-
tem (CBC), Drag Torque Control System (DTC), AntiSlip
Regulation System (ASR), Hill Start Assist (HSA), Hy-
draulic Brake Assistant System (HBA), ELECTRONIC Q2
system (E-Q2) and Ready Alert Brake (RAB). All of the
systems work together to enhance vehicle stability and
control in various driving conditions, and are commonly
referred to as ESC.

System Activation

The ESC system activates automatically when the engine
is started and can only be deactivated by selecting Race
mode. Refer to the Six-Speed Alfa Twin Clutch Trans-
mission in this section for further information.