Failing to investigate the cause of the following warnings may lead to the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.


Stop the vehicle immediately.
Follow the correction procedures.Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
(P0128)
DESCRIPTION
HINT:
This DTC relates to the thermostat.
This DTC is stored when the engine coolant temperature does not reach 75°C (167°F)
despite sufficient engine warm-up time having elapsed.
DTC No.
DTC Detection Condition
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System Diagram
SYSTEM DIAGRAM
Transmitting ECU (Transmitter)
Receiving ECU
Signal
Communication Method
Skid control ECU
Steering angle sensor
Steering angle sensor request signal
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL FRONT SHOULDER BELT ANCHOR ADJUSTER ASSEMBLY
(a) Engage the adjuster positioning hole with the guide and install the
front shoulder belt anchor adjuster assembly with the 2 bolts.
Torque:
42 N·m {428 ...