See also:

Have the vehicle inspected by your Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the system operating abnormally and possibly cause an accident. Have the vehicle inspected by your Lexus dealer immediately. ...

DAC (Downhill Assist Control system)
The DAC helps to prevent excessive speed on steep downhill slopes. The system will operate when the vehicle is traveling under 15 mph (25 km/h) and the four-wheel drive control switch is in the L4 ...

GPS (Global positioning system)
LIMITATIONS OF THE NAVIGATION SYSTEM This navigation system calculates the current position using satellite signals, various vehicle signals, map data, etc. However, an accurate position may not ...