Toyota Highlander Hybrid 2020 Owner's Manual page 405

The malfunction indicator lamp
comes on indicating a temporary
malfunction and your vehicle may
not pass the I/M test.
When the malfunction
indicator lamp still
remains on after several
driving trips
The error code in the OBD sys-
tem will not be cleared unless
the vehicle is driven 40 or more
times.
If your vehicle does not
pass the I/M test
Contact your Toyota dealer to
prepare the vehicle for re-test-
ing.
HIGHLANDER HV_U
6-2. Maintenance
405
6