Lft tail/ break light out, and all the warning lights are lit up on my dashboard.

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! If your left tail/brake light is out and suddenly every warning light on the dash lit up like a Christmas tree, your Lexus RX400h might be dealing with more than just a bad bulb. On hybrids like yours, electrical gremlins can pop up if there’s a **short in the lighting circuit**, a **bad ground**, or even a **low 12V auxiliary battery**—which can cause all sorts of strange behavior. Start by checking the bulb and socket for corrosion or melting. If the bulb looks fine, check the fuse and wiring. A short in the tail light circuit can trigger warning lights across the dash, especially in a hybrid where everything talks to everything else. As for finding a mechanic near Fairfield, CA—we’ve got you covered. Just give us a call and we’ll help you find a trusted RepairPal Certified shop in your area. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.