# 2008 Lexus IS 250 - radio problem and rear knock **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** is250, lexus\ **Created:** [April 10, 2022, 7:34pm UTC](https://community.cartalk.com/t/2008-lexus-is-250-radio-problem-and-rear-knock/183507 "2022-04-10T19:34:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Shirley1](https://avatars.discourse-cdn.com/v4/letter/s/65b543/32.png) [@Shirley1](https://community.cartalk.com/u/Shirley1)\ **Post date:** [April 10, 2022, 7:34pm UTC](https://community.cartalk.com/t/2008-lexus-is-250-radio-problem-and-rear-knock/183507/1 "2022-04-10T19:34:43Z")
My radio do not come on. I also have a knocking sound in the rear passenger speaker. I drive a 2008 Lexus IS250. Can you please tell me what you think my problem maybe? ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [April 10, 2022, 7:53pm UTC](https://community.cartalk.com/t/2008-lexus-is-250-radio-problem-and-rear-knock/183507/2 "2022-04-10T19:53:59Z")
this might help. it is at least a place to start. [LEXUS RADIO, CLIMATE CONTROL NOT WORKING PROBLEM EASY FIX - YouTube](https://www.youtube.com/watch?v=YZa3ZDMFs1U) ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [April 10, 2022, 8:11pm UTC](https://community.cartalk.com/t/2008-lexus-is-250-radio-problem-and-rear-knock/183507/3 "2022-04-10T20:11:08Z")
Two other things, I believe on your vehicle the amplifier is located in the trunk. if you have any water leaking in the trunk it could fry the amp. also, someone else with your problem mentioned there are wires under your cup holder. on his vehicle they shorted out. I guess from spilling liquid. just some thoughts.