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.
Circuit/System Verification
- Ignition OFF, gear shift selector in PARK, ignition ON.
- Verify that S39 Ignition Switch can be rotated to the ON position.
- If the ignition switch cannot be rotated to the ON position and Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder has NOT been performed
Refer to Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder .
- If the ignition switch can not be rotated to the ON position and Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder has been performed
Refer to Circuit/System Testing.
- If the ignition switch can be rotated to the ON position
- If the ignition switch cannot be rotated to the ON position and Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder has NOT been performed
- Ignition ON, gear shift selector in NEUTRAL, ignition OFF.
- Verify that the S39 Ignition Switch cannot be rotated to the LOCK position.
- If the ignition switch can be rotated to the LOCK position and Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder has NOT been performed
Refer to Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder .
- If the ignition switch can be rotated to the LOCK position and Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder has been performed
Refer to Circuit/System Testing.
- If the ignition switch cannot be rotated to the LOCK position
- If the ignition switch can be rotated to the LOCK position and Ignition Key Cannot Be Inserted, Rotated or Removed from the Ignition Lock Cylinder has NOT been performed
- All OK.
NO RELATED
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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.