We don't have one of these cars, so my advice is general at best. The first place to start would be to check your battery terminals to see if they are tight. After that, I would look at all the grounds I could find. Then I would go after connectors under the dash to make sure they are tight. You might have to be a little careful to avoid setting off your airbag ( don't know, but if you do, it makes a mess ). On some cars the wire for it a bright yellow.

Greg