Hybrid Vehicle Electronic Control Unit
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
Hybrid Vehicle Electronic Control Unit (HV ECU) is located below carpet on floor panel, just below passenger's side of instrument panel. See Fig 1. If HV ECU is replaced, the HV ECU must be reprogrammed for the engine immobilizer system. Engine immobilizer system may also be referred to as Hybrid Vehicle (HV) immobilizer system. For programming procedures, see HYBRID VEHICLE ELECTRONIC CONTROL UNIT PROGRAMMING under PROGRAMMING.