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How to Fix Faulty Key Repairs A malfunctioning key fob could ruin your entire day. Luckily, fixing these issues is easy with the right tools and steps. Always make sure to ground yourself prior to attempting repairs to eliminate static electricity. It's only a matter of seconds, and is good practice when working with electronics in general. Look for any debris under the bad key. Breadcrumbs and other debris can become stuck under keys, preventing the keys from being properly pushed in. Broken Car