I have heard about the x5's catching electrical fire and recently for probably a month now iv had random burnt smells in my car. Its not heavy but noticable, and it comes and goes. i am not exactly sure when it happens but it just randomly smells like something was burnt. i thought it was another car outside so i would turn on the air circulation and seem to disappear, but me and my gf were driving down a road with no cars in front or around and we both smelled something that was burnt. i am not sure if this is a real big problem but i was hoping for any things to check for just incase anythign goes wrong.

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2005 Black x5 3.0i