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. 1 (15 A) fuse from the under-dash 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 card is lost or unavailable, you can get the code from the interactive Network (iN) using the navigation system serial number. The system serial number can easily be obtained without removing the audio-navigation unit. To get the serial number and the code, do this:
- Press and hold the MENU, MAP/GUIDE, and CANCEL buttons for 3 seconds.
- At the select diagnosis items screen, select Detail Information & Settings, select Unit Check, then ECU Info (see UNIT CHECK (QUICK CHECK)Β ). The system runs a brief diagnosis, then the audio-navigation unit serial number is displayed at the bottom of the screen.
- Use the navigation anti-theft code inquiry option on the iN to look up the 4-digit navigation anti-theft code.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.