The mechanic says I need a new "module" for my 2004 Mercedes smart for two. I guess the history is that being the car was from Canada they had to do something to get the emissions to pass for California? Well, my engine light is on and the mechanic said, "a new module should do it." I can't afford 1200.00 right now and feel like I can replace an ECU or module for this car. Any thoughts? Thank you.