Overview of Mazda CX-5 Keyless System. The Mazda CX-5 features a convenient keyless entry system, which allows owners to lock and unlock the doors, as well as start the engine without needing to take the key out of their purse or pocket. The system also assists in signaling for attention and operating the vehicle’s theft-deterrent system. Open the driver's door. Within 30 seconds of opening the driver's door, press and hold the LOCK button on the key for 5 seconds or longer. All of the doors and the liftgate lock and the beep sound activates at the currently set volume. The setting changes each time the LOCK button on the key is pressed and the beep sound activates at the set Press the lock button on the transmitter 4 times within 3 seconds to turn on the operation indicator light. Press the lock button continuously for 1.5 seconds or longer while the operation indicator light turns on (for 5 seconds). With the advanced keyless function. The keyless entry system is fully operational (door/liftgate lock/unlock) when the ignition is switched off. The system does not operate if the ignition is switched to any position other than off. If the key does not operate when pressing a button or the operational range becomes too small, the battery may be weak. Other symptoms include push start not responding( must wave fob over push ignition); car will be idle and dash key light flashing(key not in proximity); and keyless entry via button on door handle does not respond. The keyless entry system is a vehicle entry device. The keyless entry system is used in conjunction with the body control module (BCM) to remotely activate certain vehicle features. Keyless entry will lock/unlock the doors, or release the rear compartment lid when a corresponding button on the keyless entry transmitter is pressed. 3209 posts · Joined 2015. #2 · Aug 16, 2020. Sometimes the receiver in the car can get cranky. Try disconnecting your battery for a bit and see if that helps. Reply. dsulit408. 18 posts · Joined 2016. #3 · Aug 17, 2020. Since it happening to both key fobs, it sounds like the receiver is acting up. keyless entry not working. A few weeks back my car (2010 Mazda6 S 3.7L GT-V6) sat for 2 weeks and wouldn't start, so I got a neighbour to give me a boost. After this, I now have to take the physical key out of the key fob to manually insert the key into the door to lock and unlock the car. Putting my hand to the sensor in the door handle to My driver's door lock sensor stopped working a few days ago. Unlock sensor and passenger lock/unlock work fine. I believe it's related to water/snow, most people complain that the sensors stop working after they wash the car or under snow. In my case, it happened when the car was covered in a few centimeters of snow, door handles included. When small digital systems appeared in the 1980s, the car industry was quick to pick up and use them. In short order, Ford developed the first computer-controlled keypad door locking system in about 1980. A few years later, small radio transmitters were integrated with car electronics and key fob-controlled keyless car entry systems appeared. iZ8M.