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
ArmrestOperation check
Illuminated entry system operation check
The illuminated entry system controls the following
lights:
Ignition key cylinder light*1 or transponder key
amplifier*2
Foot light
Map light and room light
Hint:
*1: W/o engine immobiliser system
*2: W/ engine immobiliser ...
How to proceed with troubleshooting
Hint:
Use these procedures to troubleshoot the engine immobiliser
system.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 to 14 v
If the voltage is below 11 v, recharge or replace the battery
before proceeding.
cran ...
System description
Engine immobiliser system description
The engine immobiliser system is designed to prevent
the vehicle from being stolen. This system uses a
transponder key ecu that stores the key codes of
authorized ignition keys. If an attempt is made to start
the engine using an unauthorized key, the e ...