If A Warning Light Turns On Or A Warning Buzzer Sounds - Lexus GS350 Owner's Manual

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7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes
on or flashes. If a light comes on or flashes, but then goes off, this does
not necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicle inspected by your Lexus dealer.
Stop the vehicle immediately. Continuing to drive the vehicle may
be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning light
(U.S.A.)
(Canada)
GS350_OM_OM30E15U_(U)
Warning light/Details
Brake system warning light (warning buzzer)
• Low brake fluid
• Malfunction in the brake booster system