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2002 Lexus LS430 Question: Mark Levenson system radio only works with touch screen. The knobs will not work



Joanne12, 4.3L V8, Watertown, MA, April 27, 2013, 20:28

I have a 2002 LS430 with Mark Levenson system. The radio works but only with on screen touch. The volume and station controls knobs do not work. I can hear the radio but cannot control anything with the knobs. It worked before the battery was changed but now it does not work properly . Do you what could be causing this problem?

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