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.
2016 Infiniti Q50 Base, AWDFACTORY OEM SERVICE PROCEDURE
Engine Compartment (Left Side)
| Oil pan | Left side of cylinder block |
| No. | Component | Function |
|---|---|---|
| Coolant thermostat heater element | COOLANT THERMOSTAT HEATER ELEMENT | |
| Partial load operation crankcase ventilation valve | CRANKCASE VENTILATION SYSTEM | |
| Throttle valve actuator | THROTTLE VALVE ACTUATOR | |
| Pressure sensor upstream of throttle valve | Senses charge air pressure downstream of throttle valve. | |
| Knock sensor 1 | KNOCK SENSOR | |
| Engine restart bypass relay | ENGINE RESTART BYPASS RELAY | |
| Starter motor | STARTER MOTOR | |
| Knock sensor 2 | KNOCK SENSOR | |
| Engine coolant temperature sensor | Senses a engine coolant temperature. | |
| Engine oil pump valve | - | |
| Engine oil level switch | - | |
| - | - | |
| Blow by sensor | Senses a leak of blow-by hose. |
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.
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