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 audio-navigation unit has a coded theft protection circuit. Make sure you have the anti-theft security code before:
- Disconnecting the 12 volt battery.
- Disconnecting the audio-navigation unit connector A (24) and C (8P).
- Removing the No. 17 (15 A) and the No. 23 (10 A) fuse from the under-hood fuse/relay box.
After service, reconnect power to the audio-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 (iN) to look it up. You can view the serial number in the ECU Info diagnostic screen (see UNIT CHECK (QUICK CHECK) ). Alternatively, you can find the serial number on the underside label which is located on the audio-navigation unit in the dash.
When replacing the audio-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.