Lexus 2013 IS250 Owner's Manual page 581

A warning buzzer sounds when leaving the vehicle

Is the message displayed on the multi-information display?
Check the message on the multi-information display. (P. 481)
A warning light turns on or a warning message is displayed

When a warning light turns on or a warning message is displayed, refer
to
P. 475, 481.
When a problem has occurred
If you have a flat tire

Vehicles with a spare tire
Stop the vehicle in a safe place and replace the flat tire with the spare
tire. (P. 496)

Vehicles with an emergency tire puncture repair kit
Stop the vehicle in a safe place and repair the flat tire temporarily with
the emergency tire puncture repair kit. (P. 507)
The vehicle becomes stuck

Try the procedure for when the vehicle becomes stuck in mud, dirt, or
snow. (P. 534)
IS250_EE(OM53B11E)
What to do if... (Troubleshooting)
565