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.
2003 Acura MDX BaseFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Component Location |
|---|---|
| Automatic Lighting Control Unit | Under middle of dash. |
| Climate Control Unit | Lower center of dash, forward of center console. |
| Door Multiplex Control Unit | In driver's door. |
| Driver's Multiplex Control Unit | Behind left end of dash. |
| Driver's Power Seat Control Unit | Under driver's seat. |
| DRL Control Unit | Under middle of dash. |
| ELD Unit | At right rear of engine compartment. See Figure . |
| Front Passenger's Weight Sensor Unit | Under front passenger's seat. |
| Front Stereo Amplifier | Below center console. |
| Immobilizer Control Unit Receiver | In steering column cover. |
| Keyless Receiver Unit | Behind right side of glove box. |
| Navigation Unit | Under right front seat. See Figure . |
| OPDS Unit | In front passenger's seat. |
| Passenger's Multiplex Control Unit | Behind right kick panel. |
| Passenger's Power Seat Control Unit | Under passenger's seat. |
| Power Window Control Unit | In driver's door. |
| Powertrain Control Module | On right side of engine compartment. |
| Rear Camera Control Unit | On right side of cargo area. See Figure . |
| Rear Controller & Screen | In middle of roof. |
| Rear Window Wiper Intermittent Control Unit | Left side of cargo area. |
| SRS Unit | Behind lower center of dash. |
| Throttle Actuator Control Module | At middle of engine compartment. See Figure . |
| VSA Modulator Control Unit | On left side of engine compartment. |
| VTM-4 Control Unit | At right side of cargo area, behind rear side trim panel. 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.