2006 Lexus GX 470 Owners Manual - Page 78

GAUGES, METERS AND SERVICE REMINDER INDICATORS IF THIS INDICATOR OR BUZZER COMES ON... DO THIS. (a) Brake System Warning Light and Buzzer This light comes on in the following cases when the ignition key is in the "ON" position. D When the parking brake is applied...This light comes on for a few seconds when the ignition key is in the "ON" position even after the parking brake is released. (p) Fill up tank. (q) Add washer fluid. D When the brake fluid level is low... CAUTION (r) Key reminder buzzer Remove key. It is dangerous to continue driving normally when the brake fluid level is low. D When the hydraulic brake booster fails...If the hydraulic booster causes a problem resulting in poor braking performance, the warning light comes on and buzzer sounds continuously. Have your vehicle checked at your Lexus dealer in the following cases: D The light does not come on even if the parking brake is applied when the ignition key is in the "ON" position. D The light does not come on even if the ignition key is turned on with the parking brake released. A warning light turning on briefly during operation does not indicate a problem. 53