Sienna ABS, VSC, and Blinking TPMS Warning Indicators

The simultaneous illumination of solid ABS and VSC lights combined with a blinking TPMS light indicates that the vehicle's diagnostic modules have detected internal system communication errors or component failures. A blinking TPMS light specifically confirms a system fault rather than low tire pressure, while the lack of OBDII codes confirms that the fault resides outside of the standard engine control module's monitoring range. Verification requires the use of a professional-grade diagnostic scanner capable of accessing chassis-specific (C-codes) or manufacturer-proprietary diagnostic data streams.

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