Same problem here with my girlfriends 2015 is250 F sport, crafted line with pioneer amp. I've had a friend that works at Lexus have the service manager send a reset signal ota which got it working again, but for only a short while. First time it worked around 2 months, the most recent time, only a few hours. Lexus wouldn't own up to the defect when the problem first appeared, and neither would Lexus's corporate office.
Audio No Sound
in 2013 - Present Lexus GS350 / GS350 F / GS540h
Posted
Same problem here with my girlfriends 2015 is250 F sport, crafted line with pioneer amp. I've had a friend that works at Lexus have the service manager send a reset signal ota which got it working again, but for only a short while. First time it worked around 2 months, the most recent time, only a few hours. Lexus wouldn't own up to the defect when the problem first appeared, and neither would Lexus's corporate office.