Lexus ES 250 Owner's Manual page 285

284
4-5. Using the driving support systems
The buzzer can alert the driver of faster vehicles approaching from farther away.
Example:
Approaching vehi-
cle speed
28 km/h (18 mph)
(fast)
8 km/h (5 mph)
(slow)
■ The RCTA function is operational when
The RCTA function operates when all of the
following conditions are met:
The engine switch is in IGNITION ON
●
mode.
● The RCTA function is on.
The shift lever is in R.
●
● The vehicle speed is less than approxi-
mately 8 km/h (5 mph).
The approaching vehicle speed is
●
between approximately 8 km/h (5 mph)
and 28 km/h (18 mph).
■ Setting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display. (P.274)
Conditions under which the RCTA func-
■
tion will not detect a vehicle
The RCTA function is not designed to
detect the following types of vehicles and/or
objects:
Vehicles approaching from directly
●
behind
Vehicles backing up in a parking space
●
next to your vehicle
● Vehicles that the sensors cannot detect
A
Approximate
due to obstructions
alert distance
20 m (65 ft.)
5.5 m (18 ft.)
Guardrails, walls, signs, parked vehicles
●
and similar stationary objects
Small motorcycles, bicycles, pedestrians,
●
etc.
● Vehicles moving away from your vehicle
Vehicles approaching from the parking
●
spaces next to your vehicle
*
: Depending on the conditions, detection
of a vehicle and/or object may occur.
Conditions under which the RCTA func-
■
tion may not function correctly
● The RCTA function may not detect vehi-
cles correctly in the following situations:
• When the sensor is misaligned due to a
strong impact to the sensor or its sur-
rounding area
• When mud, snow, ice, a sticker, etc. is
covering the sensor or surrounding area
on the rear bumper
• When driving on a road surface that is
wet with standing water during bad
weather, such as heavy rain, snow, or fog
*
*
*