Description
U1300 is indicated when a communication signal malfunction occurs. U1300 is indicated along with DTCs that identify components connected to the AV control unit through communication lines. Determine the possible malfunction cause from the table below.
SELF-DIAGNOSIS RESULTS DISPLAY ITEM

U1255 satellite radio tuner
U1310 AV control unitRear view monitor system
System Diagram
System Description
When the shift selector is in the R position, the display shows a view to the
rear of the vehicle. Lines which indicate the vehicle clearance and distances
are also displayed.
Component Parts Location
Tweeter LH M143
Tweeter RH M144
AV control ...
System maintenance
The two radar sensors 1 for the BSW and
RCTA systems are located near the rear bumper.
Always keep the area near the radar sensors
clean.
The radar sensors may be blocked by temporary
ambient conditions such as splashing water, mist
or fog.
The blocked condition may also be caused b ...
B257B, B257C ambient sensor
Description
COMPONENT DESCRIPTION
Ambient Sensor
The ambient sensor (1) is installed to the front bumper
reinforcement.
It detects ambient temperature and converts it into a resistance
value which is then input into the A/C auto amp.
Ambient Sensor Circuit
AMBIENT TEMPERATUR ...