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.
2008 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
Conditions Of Vehicle (Operating Conditions)
WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
- Engine start function is ON when setting on CONSULT.
- Mechanical key is not inserted in key cylinder.
- One or more of Intelligent Keys with registered Intelligent Key ID is in the vehicle.
| Symptom | Diagnosis/service procedure | Refer to |
|---|---|---|
| Ignition switch does not turn on with Intelligent Key. [green "KEY" lamp is displayed] | 1. Check steering lock solenoid. | B2013 ID DISCORD I-KEY-STRG |
| 2. Replace Intelligent Key unit. | INTELLIGENT KEY UNIT | |
| Ignition switch does not turn on with Intelligent Key. ["KEY" lamp does not display] | 1. Check Intelligent Key unit power supply and ground circuit. | POWER SUPPLY AND GROUND CIRCUIT |
| 2. Check ignition knob switch. | IGNITION KNOB SWITCH | |
| 3. Check key switch (BCM input). | KEY SWITCH (BCM INPUT) | |
| 4. Check key switch (Intelligent Key unit input). | KEY SWITCH (INTELLIGENT KEY UNIT INPUT) | |
| 5. Replace Intelligent Key unit. | INTELLIGENT KEY UNIT | |
| 6. Check green "KEY" indicator. | WARNING LAMP | |
| 7. Check red "KEY" indicator. | WARNING LAMP | |
| Ignition switch does not turn on with Intelligent Key. [red "KEY" lamp is displayed] | 1a. Check inside key antenna 1 (instrument panel). | INSTRUMENT PANEL AREA ANTENNA |
| 1b. Check inside key antenna 2 (luggage compartment). | CENTER CONSOLE AREA ANTENNA | |
| 1c. Check inside key antenna 3 (center console). | LUGGAGE AREA ANTENNA | |
| 2. Replace Intelligent Key unit. | INTELLIGENT KEY UNIT | |
| Ignition switch does not turn on with mechanical key | 1. Check key switch (BCM input). | KEY SWITCH (BCM INPUT) |
| 2. Check key switch (Intelligent Key unit input). | KEY SWITCH (INTELLIGENT KEY UNIT INPUT) | |
| Engine cannot be cranked with transmission in "Park" or in "Neutral" position with brake pedal depressed | 1. Check transmission signal. | P0705 TRANSMISSION RANGE SENSOR A |
| 2. Check stop lamp switch. | WIRING DIAGRAM | |
| "P-SHIFT" indicator does not operate properly | 1. Check "P-SHIFT" indicator. | WARNING LAMP |
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.