See also:

Troubleshooting
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BLIS and/or CTA on/off and disable operation
The BLIS and/or the CTA can be turned off via the message center. If either the BLIS and/or the CTA is turned off, the systems will automatically turn back on at the next ignition key cycle. When ...

Erasing the function button codes
Note: You cannot erase individual buttons. 1. Press and hold the outer two function buttons simultaneously for approximately 20 seconds until the LED lamps above the buttons flash rapid ...