The indicator light comes on.

The seat heaters can be used when
Vehicles without a smart key system
The engine switch is in the “on” position.
Vehicles with a smart key system
The engine switch is in ignition on mode.
When not in use
Turn the seat heater off by returning the switch to its level position. The indicator light turns off.
Caution
Burns
Use caution when seating the following persons in a seat with the seat heater on to avoid the possibility of burns:
Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature of the seat and may lead to overheating.
Do not use the seat heater more than necessary. Doing so may cause minor burns or overheating.
Notice
To prevent seat heater damage
Do not put unevenly weighted objects on the seat and do not stick sharp objects (needles, nails, etc.) Into the seat.
To prevent battery discharge
Turn the seat heaters off when the engine is not running.
Power outlets
ArmrestDiaphragm oil seal
Components
Removal
Drain differential oil
Using a 10 mm socket hexagon wrench, remove the
rear differential drain plug and gasket, and drain the
oil.
Install a new gasket to the rear differential drain
plug.
Using a 10 mm socket hexagon wrench, install the
rear differe ...
Fail-safe chart
If a problem occurs in the electric power steering system, the
p/s warning light will come on in the combination meter and
steering power assist will be stopped, fixed at a particular
point, or decreased simultaneously to protect the system.
Hint:
The amount of power assist may be decreased ...
Installation
Install drive plate sub-assembly
Clean the 8 bolts and 8 bolt holes.
Apply adhesive to 2 or 3 threads of the 8 bolts.
Adhesive:
Toyota genuine adhesive 1342, three bond
1342 or equivalent
Using sst, hold the crankshaft.
Sst 09213-54015 (91651-60855), 09330-00021
Instal ...