Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2010 Toyota Prius BaseFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| A/C Amplifier Assembly | Behind center of dash. See Figure. |
| Certification ECU | Behind right side of dash. See Figure. |
| DCM (Telematics Transceiver) | Behind center of dash. See Figure. |
| Door Control Receiver | Right "C" pillar. See Figure. |
| Driving Support ECU | Behind right side of dash. See Figure. |
| ECM (Engine Control Module) | Left side of engine compartment. See Figure. |
| Headlight Leveling ECU | Behind right end of dash. See Figure. |
| Main Body ECU | Behind left end of dash. See Figure. |
| Occupant Detection ECU | Under front passenger's seat. See Figure. |
| Parking Assist ECU | Behind right side of dash. See Figure. |
| Power Management Control ECU | Behind right side of dash. See Figure. |
| Power Steering ECU | Behind left side of dash. See Figure. |
| Seat Belt Control ECU | Behind right side of dash. See Figure. |
| Seat Heater Control | Under driver's seat. See Figure. |
| Skid Control ECU | Behind left side of dash. See Figure. |
| Sliding Roof Control ECU | Center of roof. See Figure. |
| Solar Battery A/C Blower Vent ECU | Behind center of dash. See Figure. |
| Tire Pressure Warning Antenna & Receiver | Left "C" pillar. See Figure. |
| Tire Pressure Warning ECU | Behind right side of dash. See Figure. |
| Transmission Control ECU | Behind right side of dash. See Figure. |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.