Mitsubishi MOTORS Outlander 2019 Owner's Manual page 268

Indicator light, warning light, and information screen display list (multi information display - Type 1)
Screen
5
5-186 Features and controls
Cause
 There is a fault in the F. A. S. T. -key.
 The F. A. S. T. -key is not detected.
Do this (Reference)
Refer to "Free-hand Advanced Security Transmitter
(F.A.S.T.-key)" on page 5-12.
 Insert the F. A. S. T. -key into the key slot. Refer to
"If the F. A. S. T. -key is not operating properly" on
page 5-26.