Check the battery as follows.
â– Battery exterior
Make sure that the battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps.

â– Before recharging
When recharging, the battery produces hydrogen gas which is flammable and explosive. Therefore, observe the following precautions before recharging:
â– After recharging/reconnecting the battery (vehicles with smart key system)
If the engine will not start even after multiple attempts, contact your Toyota dealer.
WARNING
â– Chemicals in the battery
A battery contains poisonous and corrosive sulfuric acid and may produce hydrogen gas which is flammable and explosive. To reduce the risk of death or serious injury, take the following precautions while working on or near the battery:
â– Where to safely charge the battery
Always charge the battery in an open area. Do not charge the battery in a garage or closed room where there is not sufficient ventilation.
â– Emergency measures regarding electrolyte
If you feel pain or burning, get medical attention immediately.
â– When there is insufficient battery fluid
Do not use if there is insufficient fluid in the battery. There is a possible danger that the battery may explode.
NOTICE
â– When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all accessories are turned off.
Adding the washer fluid
If any washer does not work or the warning message appears on the multi-information display, the washer tank may be empty.
Add washer fluid.

WARNING
â– When adding washer fluid
Do not add washer fluid when the engine is hot or running as washer fluid contains alcohol and may catch fire if spilled on the engine, etc.
NOTICE
â– Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle's painted surfaces, as well as damaging the pump leading to problems of the washer fluid not spraying.
â– Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid bottle.
Checking and adding the
brake fluid
TiresDownhill assist control system
The downhill assist control
system helps to prevent
excessive speed on steep
downhill slopes.
The system will operate
when the vehicle is traveling
under 15 mph (25 km/h) with
the accelerator and brake
pedals released.
WARNING
â– When using downhill assist
control system
Do not rely overmuch on the ...
Key lock-in prevention function does not work properly
Description
When the key is in the ignition key cylinder or the door courtesy light on
signal is output to the main body
ecu, performing the door lock operation with the lock switch does not lock the
door.
Wiring diagram
Inspection procedure
Read value of intelligent tester (unlock w ...
Terminals of ecu
Check transponder key amplifier
Disconnect the e5 amplifier connector.
Measure the resistance of the wire harness side
connector.
If the result is not as specified, there may be a
malfunction in the wire harness.
Reconnect the e5 amplifier connector.
Measure the resist ...