I have a 2014 Rav4 Limited with the entune JBL radio. It keeps losing the treble, midrange, bass settings. All channel settings never get lost. The dealer has done 4 upgrades to the radio, they think it's the amp. The other day the radio went out completely for about 10 seconds and came back on to the station that I was listening to. The dealer also thought it was my iphone 6s, so I removed it from the pairing to the radio. It still lost the settings. Please help!!!