Toyota Prius C will not start, no internal lights or sounds, strange dash behavior after battery replacement on Toyota Prius C

Some Toyota Prius C owners report experiencing starting issues after a battery replacement, including a lack of internal lights or sounds and unusual dashboard behavior. These problems may stem from a drained key fob battery, which can prevent the vehicle from starting despite other components being functional. Additionally, issues with the hybrid battery or starter motor can hinder the engine's ability to crank. Some owners find that if the battery light remains on after charging or jumping the battery, it may indicate a problem with the alternator. A faulty starter can also be a culprit in preventing the engine from starting. Furthermore, checking the charging system voltage with a multimeter can reveal whether the battery needs replacing or if there are other power delivery issues. It is advisable for owners facing these challenges to consult a professional mechanic for accurate diagnostics.