Hyundai Sonata LF: Advanced Smart Cruise Control System / Advanced Smart Cruise Control (ASCC) Unit-Radar Description and Operation
The smart cruise control unit is installed on the front right
side of the chassis.A radar sensor is embedded in the front section of
the unit. This sensor detects vehicles and objects in front of the
vehicle.The radar sensor can detect up to 64 objects ahead of a vehicle.
The alarm goes off when the vehicle deviates from the horizontal and
vertical alignment reference points during operation. This sensor
communicates with the dashboard, warning buzzer, smart cruise control
switch, Electronic Stability Program (ESP), ECM, and TCM via CAN
communication.The sensor controls vehicle speed through CAN
communication between the Electronic Stability Program (ESP) system and
the ECM and TCM.

Description
The smart cruise control system allows a driver to program
the vehicle to control the speed and following distance detecting the
vehicle ahead without depressing the brake pedal and the accelerator
pedal...
Other information:
Removal
[General Type]
1.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the wheel cap(A).
Be careful not to damage to the wheel cap(A) when removing the it.
3.
Remove the front wheel and tire (A) from front hub...
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad")
3.
Rmove the blind spot detection (BSD) switch (A) after disengaging the mounting clip.
Installation
1.
Install the crash pad side switch assembly after connecting the connector...