Navigation System Will Not Accept Security Code

Navigation system will not accept security code

NOTE:
- Check the vehicle battery condition first.
- The system will not operate without the 4-digit security (anti-theft) code. Follow the this procedure. (After 10 consecutive tries, you must cycle the key to continue trying)
- The "Navigation System Diagnosis and Core Return Form" is available on ISIS, under "Job aids" and can be printed out for recording this information. This information will help the remain facility to determine what caused the failure.
- Always check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the anti-theft codes for the audio system and the navigation system.
- Verify that the correct navigation unit is installed for this model.
Go into the Diagnostic mode and use "Version".
- Always make sure that the correct DVD color and version are installed.
- Check on-line for service bulletins or other service information for the navigation system.
- Enter the anti-theft codes for the audio system and the navigation system.

1. Go into the "System diagnosis menu", select "Unit check," and then "Navi ECU." A brief diagnostic will run for 20 seconds, and the serial number is then displayed.

Is the serial number displayed?

YES - Go to step 3.

NO - Go to step 2.

2. Check the navigation unit.

Is there a serial number on the label of the underside of the navigation unit?

YES - Go to step 3.

NO - Replace the navigation unit.

3. Using the Serial Number, look up the navigation security code in the Interactive Network, (click: Service, Vehicle Information, Anti-Theft code Inquiry, and then select "Navigation" from the "product" drop down box). Enter the serial number.

Is a 4-digit code displayed on the screen?

YES - Go to step 4.

NO - Call the Warranty Department, the telephone number is listed in the PDI/TQI bulletin, to obtain the code. Then go to step 5.

4. Check that the obtained code works to bypass the code screen in the navigation system.

Does the code work?

YES - The system is OK at this time. Return the car to the client and give them the anti-theft code.

NO - Go to step 5.

5. Try entering four zeros (0000) in place for the code.

Do the four zeros work to bypass the code screen?

YES - Replace the control unit, and enter "Security code is 0000" in the "problem description field" of the core return form: "Security code is 0000."

NO - Replace the control unit, and enter "Won't take security code" in the "problem description field" of the core return form: (as proof, enclose the sticker that contains the Serial number and the Code).