1. Disconnect the brake fluid level sensor connector from the master cylinder.
2. Inspect for continuity according to fluid level between the brake fluid level sensor terminals.

If not as indicated in the table, replace the reserve tank.

Brake Switch InspectionForward Obstruction Warning (FOW))
Forward Obstruction Warning (FOW) is a system which alerts the driver of a
possible
collision using an indicator and warning sound in the instrument cluster while
the vehicle
is being driven at about 15 km/h or faster (10 mph or faster) and the system's
radar sensor
determines that your veh ...
Front Seat Belt Removal/Installation [Two Step Deployment Control System]
WARNING:
Handling the front seat belt (pre-tensioner seat belt) improperly can accidentally
deploy the pre-tensioner seat belt, which may seriously injure you. Read the
air bag system service warnings and cautions before handling the front seat
belt..
WARNING:
Th ...
Message Indicated on Display*
If a message is displayed in the center display (type B audio), take
appropriate action (in a
calm manner) according to the displayed message.
Stop Vehicle in Safe Place Immediately
If the following messages are displayed in the center display (type B audio),
a vehicle
system may be malf ...