How to fix a kenwood radio in protect mode ~ the easy way ~ - YouTube
Remove Protect lock from all car stereo |KENWOOD stereo reset music system | Raghuveer Singh - YouTube
Kenwood Excelon KDC-X304 CD Receiver with Bluetooth | Amazon Alexa Ready | Plus SiriusXM SXV300v1 Connect Vehicle Tuner Kit for Satellite Radio with Free 3 Months Satellite and Streaming Service
Kenwood KDC-MP146 error code - Protect Code Displayed - please help fix this problem - YouTube
JVC "PROTECTING SEND SERVICE" error [SOLVED] | DIYMobileAudio.com Car Stereo Forum