What does the error 1 mean on a rav4?

Error 1 on a Toyota RAV4 typically indicates an issue related to the vehicle's keyless entry or smart key system. This error can arise from problems such as a weak key fob battery, a malfunctioning key fob, or issues with the vehicle's receiver. To resolve it, you can try replacing the key fob battery or reprogramming the key. If the problem persists, it's advisable to consult a professional mechanic or visit a Toyota dealership for further diagnosis.