The "auto on" function has stopped working (i.e. the sub no longer works). Initially I could bring it back to life by pulling out / inserting the power chord. It became gradually worse and finally this workaround no longer worked.
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theres a setting is on the subwoofer itself, not the AVR. It usually has 3 positions: On, Auto, Off. Auto allows the sub to "sleep" when it's not being used, and to power back up fully when it senses a signal. Maybe change to On position which would bypass that auto mode
Try calibrating first,window up & hold switch for 3-4 seconds window down hold 3-4 seconds then back up & hold 3-4 seconds,check for the auto down to work if not then most likely the master switch is needed.
All Of The Window Controls Are Controlled By The Master Switch, Which Is The Drivers Window/Door Lock Control Assembly In The Door. Sometimes A Removal Of The Control Assembly And A Through Cleaning Can Bring It Back To Life. More Specifically The Window Lock Button. This Is Why The Other Windows Have Stopped Working At The Door But The Drivers Control Still Operated All The Doors Just Fine. Next To Go Bad Is The Auto Down Function. basically The Inner workings Of The Switches Are Gunked Up. Take the Driver Side Door Panel Off, Remove The Door Lock Assembly From The Panel. It Can Come Apart, But It's A Three Hands Kind Of Thing. The Buttons Pry Off, But Be Careful They Will Fly Across The Room. Once You Open The assembly wipe Everything Down With Some Cleaner, I Used A rag And carb Cleaner. I Did This And It Worked For A Couple Of Months. It Was Much Easier To Order A New One From Rock Auto.Com, It's Plug In Easy. 1.5 Hours If You've Never Taken The Door Panel Off Just Because You Have To Be Patient. My Replacement Been Working Great For 2+ Years. Cost ~ $60.
Sorry For The Weird Caps, Phone Reply.
I had a similar problem with a 2001 Saturn. We checked every fuse and they were all fine. We finally did a 'reset' on the car's computer by disconnecting the battery and reconnecting it a few minutes later. Everything was back to normal after that.
Auto sensing circuits function when a certain level of audio output is reached but the transition from off to on can be abrupt, annoyingly so. Another problem is that you may have to set the system volume level higher than you would prefer to get the sub to turn on. I am currently using a sub that does not have this "feature" and performance is more predictable.