Geely EC718, EC718RV, EC715, EC715RV. Manual part — 487

11.14 Reverse Radar

11.14.1 Specifications
11.14.1.1 Fastener Tightening Specifications

Applications

Model

Specifications

Metric (Nm)

US English (lb-ft)

Reverse Radar Module Retaining Bolts

M6 × 16

8-11

6-8

Body Electric

Reverse Radar

11-461

11.14.2 Description and Operation
11.14.2.1 Description and Operation

1. When reversing (speed less than 5 km/h), reverse radar

system detects the distance between obstacles and the
vehicle and sends out corresponding alarm signals to
ensure the parking safety. However, the obstacles within
30 cm to rear bumper (11.8 in) are not guaranteed to be
detected.

2. Reverse sensor control unit converts the signal traveling

time from the sensor to the obstacle, and then from the
obstacle to the sensor signal to determine the obstacle
distance.

3. Reverse radar system consists of sensors on the rear

bumper, a control unit and a built-in buzzer in the instrument
cluster.

Note

1. According to the distance to obstacles, the system

can give the driver the corresponding alarm signal
(buzzer) and thus provide confidence for the driver
safe parking, but this process does not mean that
careless parking, or the driver can avoid parking
failures.

2. This system's ability to detect distance and obstacles

is limited, the driver must be careful when th obstacle
is not detected. In particular, when driving across the
obstacles, the driver can not solely rely on the
system.

11.14.2.2 Alert Tone Level

Detect
Distance
(cm/in)

Distance
Error
(cm/in)

Alarm
(+/-10%)

65 ms

65 ms

195 ms

FE11-1201b

11-462

Reverse Radar

Body Electric

11.14.2.3 Detection Area

Vertical Distance

Horizontal Distance

FE11-1202b

For the reversing radar system, when the reversing speed is
less than 5 km/h, the detection area is a straight line from the
rear bumper 140 cm (55 in), the corner distance is 60 cm (24
in).

Body Electric

Reverse Radar

11-463

11.14.3 System Working Principle
11.14.3.1 Reverse Radar Control Unit
Functions

–

Produce TX Signal To Drive The Sensor Work

–

Receive The RX Signal From The Obstacle

–

Compare The RX Signal With The Reference Level

–

Send Alarm According To The Detected Obstacles
Distance

–

Sensor Fault Diagnosis

–

Drive Buzzer Alarm

–

Provide Sensor Drive Voltage

11.14.3.2 Sensor-Driven Sequence

Five-Step Cycle:

Left Corner Sensor=Left Corner Sensor;

Left Middle Sensor=Left Middle Sensor;

Right Middle Sensor=Right Middle Sensor;

Right Corner Sensor=Right Corner Sensor;

Right Middle Sensor=Right Middle Sensor.

11.14.3.3 Reverse Radar Display

Reverse radar indicator in the instrument cluster is on the LCD
lower half right side. When reversing, the reverse radar
indicator blinks with 1Hz frequency on the LCD.

km

ODO

FE11-1204b

Reverse radar sign and odometer sign share a car icon on the
LCD. Displaying the reverse radar and the odometer have
conflict. When reverse radar is displayed, the odometer display
will be temporarily unavailable, as shown above. This principle
also applies to travel time and reverse radar conflict.

FE11-1205b

km

km

ODO

When reversing, if the the middle row does not display the time
or odometer, then there is no conflict, the middle row displays
the normal value, as shown above.

11.14.3.4 Buzzer Driver

Buzzer is integrated within the instrument cluster, and
connected to the reverse radar control module through cable.

11-464

Reverse Radar

Body Electric