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Remote Key Fob Repairs If your remote key fob has stopped functioning, the first step to do is check the battery. This is usually the cause of your vehicle not responding to its commands. If the issue continues, it may be due to an issue with another. Fortunately, a lot of these issues can be solved with just a few steps. Check the Battery The key fob can perform a number of functions. They can lock and unlock your car remotely as well as switch on the interior lights, and start the engine by pressing