Quote:
Originally Posted by Simonpk
hello, i have a 2014 sr5 with non jbl audio system. the head unit finally gave up. a friend of mine sold me his head unit which was a jbl head unit from a 2018 with JBL speakers/amp.
i installed the head unit and everything works. only things that does not work is being able to adjust the volume. i can not increase or decrease volume. has anyone done this on their 4Runner and was able to fix it?. dont really want to pay someone to diag it but also dont want to upgrade at the moment. any help please!!!!
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Did you install the amp that came with the JBL stereo, if not I believe the stereo needs the amp for it to work correctly.
