sir if there was no engine check light there must be some fault in ECU not to register the light failure.please check firmware on ecu & match with the NHW xxx frame code.Is your Prius JDM or euro model.?
so after bumper & rear light had impact ecu cancelled the movement & door was saved from any scratches? to my knowledge after impact on rear of prius either doors of impact side pop open automatically as in ejection seat of fight plane, to protect passenger & driver so if door did not popped open, there must be some scratches too please share ??
Koito is brand name of warning light manufacturer of Japan under Chinese licence