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.
Anti-theft Feature
The navigation system and audio unit have a coded theft protection circuit. Make sure you have the anti-theft security code before:
- Disconnecting the battery.
- Disconnecting the navigation unit connector C (8P).
- Removing the No. 7 (7.5 A) fuse from the driver's under-dash fuse/relay box.
After service, reconnect power to the navigation unit, and turn the ignition switch to ON (II). Enter the 4-digit anti-theft security code, then select Done.
If the code cannot be found, use the interactive Network (i N) to look it up. You can view the serial number in the Navi ECU diagnostic screen or find it on a label on the underside of the navigation unit located in the trunk.
When replacing the navigation unit, be sure to give the customer the new anti-theft security code.
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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.