Approximately five hours after the engine is turned off, you may hear sound coming from under the vehicle for several minutes. This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction.
Main Owner’s Manual
Accessories, spare parts and modification of your ToyotaPrecaution
PRECAUTION
1. PRECAUTIONS WHEN WORKING ON ELECTRIC STEERING LOCK
(a) After replacing the steering lock actuator assembly (steering lock ECU),
perform key ID code registration.
(b) After replacing the steering lock actuator assembly (steering lock ECU),
...
IG2 Signal Malfunction (B2788)
DESCRIPTION
The steering lock ECU determines the on/off status of the engine switch through
the IG2 signal circuit.
The steering lock ECU does not lock the steering when it receives the IG2 relay
on signal. This prevents the steering from being locked wh ...