
Access the interior power control unit beneath the driver’s side dashboard to inspect circuits controlling cabin lighting, climate systems, and entertainment modules. Confirm slot labels and amperage ratings before removing any protective elements to avoid disrupting critical circuits.
Check the under-hood distribution module near the battery for high-current circuits including cooling fans, ABS, and auxiliary power outlets. Ensure the ignition is off before handling connectors to prevent short circuits or sparks.
Use a multimeter or test light to verify current flow before swapping any component. This allows precise identification of faulty slots affecting electronics, lights, or hybrid system accessories.
Organize removed connectors and protective elements on a clean surface, noting their original positions. Accurate documentation simplifies reinstallation and maintains the proper function of safety and electronic systems.
Toyota Prius Second Generation Power Panel Guide
Access the interior control module beneath the driver’s side dashboard to reach circuits managing cabin lighting, climate controls, and infotainment systems. Verify the labeling on each slot and confirm amperage ratings before removing any protective element to prevent accidental disconnection of critical components.
Inspect the under-hood distribution panel near the battery for circuits powering high-current devices such as cooling fans, ABS, and hybrid system components. Use a multimeter or test light to check current flow before replacement, and keep connectors organized on a clean surface to ensure accurate reinstallation.
- Driver-side interior panel for standard electronics
- Under-hood module for high-power circuits
- Auxiliary panel for additional accessories
Locating Interior and Under-Hood Electrical Modules

Access the main cabin control module under the driver’s side dashboard to inspect circuits that operate interior lighting, climate controls, and entertainment systems. Remove the side panel cover to reveal labeled slots, and confirm each slot’s amperage before handling connectors.
Inspect the secondary distribution panel under the hood near the battery to manage circuits for high-current devices such as cooling fans, ABS, and hybrid system components. Turn off the ignition before touching any connectors to prevent sparks or short circuits.
Interior Module Identification
Look for alphanumeric labels printed inside the cover of the cabin panel. Each code corresponds to specific electronic modules, including ignition, lights, and audio. Keeping a printed reference chart nearby simplifies identification and prevents accidental swaps.
Under-Hood Module Access

The under-hood panel contains slots for power-hungry circuits like fans, auxiliary outlets, and engine management modules. Use a test light or multimeter to verify continuity before replacing any component. Organize connectors sequentially on a clean surface to maintain correct reassembly.
Document any replacements or modifications by taking notes or photos. This ensures that future troubleshooting can proceed quickly, maintaining proper function of all cabin and engine electronic systems without misconnection.