Issue with Volume Swell Randomly

[xJO98]

Hello all, having an odd problem with my ‘18 JLU Sahara. I have the 7.0” radio with Apple Car Play and I added the Alpine PSS-23WRA2 powered system upgrade with the Alpine tweeters for the dash, amp and sub. I’ve had an intermittent issue that comes and goes over time the past couple of years and it’s now getting worse. The issue I’m having is random volume swelling in individual speakers and it bounces around the car like the dash left comes on much louder than the others, sometimes to the point the speaker is distorting and crackling, then it balances out, then another does it, etc. This can go on just for a couple of minutes, some days it happens and doesn’t stop and then I can go weeks where it doesn’t do it at all. Doesn’t matter the input source, happens on radio (AM/FM/Sirius), Bluetooth and direct connection of my iPhone via USB. I mentioned to the dealer one time I was in for an oil change and they couldn’t find any reason. It’s getting quite frustrating now and I don’t know if it’s an issue with the vehicle software or an issue with the Alpine amp. Has anyone experienced something similar, with or without having the Alpine upgrade system?

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Does the system come with a warranty? Have you talked to Alpine about this? I would have attempted to warranty it the first time it happened.