Q: 2010 mazda cx7. Key fob won't lock doors. Also can not lock doors using the door switch. Worked earlier today

Normally, power is always available at the power door lock switch so the doors can be locked and unlocked, from the inside, at any time. If the power door lock switch in the vehicle does not work, the cause of the loss of power is found via a circuit trace. That is, starting with the power source, one simply traces the circuit through the fuse, wiring, relay and so forth until you find the interruption. If you desire a repair of this, the recommended service to request is a power door lock diagnostic. If you request that service, the responding certified mechanic will get this diagnosed and resolved, right at your location. If you have further questions or concerns, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.