The switch makes a noises, so i don't think its the switch. However, the power lock actuator makes a noise to but doesn't do nothing. If you click on the lock/unlock button more than three times in a row the actuator slowly stops making the noise like if its losing power. Until u give it a minute. Then it feels like it has power but not enough to lock the doors. I heard something about a BCM but I don't know what that is. I also tried disconnecting the battery and I let it sit over night and nothing.