It may caused by a light installed that don't match the factory specifications, could be the wattage is a bit off or something of that nature. It could also be the lamp failure sensor. On the LS400 it is located in the trunk on the drivers-side just behind the backseat. The sensor activates the warning light when there is a break in the circuit for the brake lights or the tail-lights.
that means you have MORE than one bulb burned out. The the light indicator does not tell how many and what bulbs are burned out. It stays on until all the burned out bulbs are replaced.
It was my alternator, needed rebuild.
Unfortunately, the 2002 es300 was the first year that Lexus did not use a IACV in the ES300.
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no the es300 is front wheel drive gs is rearwheel drive