Won't start, battery good, clicking, humming noise
Had been working properly, out if the blue there's no power. Brake
lights intermittently flash, clicking and humming noises inside.
Battery is good, checked fuses but have so far found them all ok.
Please help, we've had this car for only 3 years. Replaced the battery
Check the battery first.. don’t assume it’s not dead... did u test it
You say battery is good, but the clicking is a good sign that it is not providing sufficient voltage to start the car. Either have the battery checked or put a volt meter to it. It should read 12.5 Volts and there should be no corrosion on the terminals.
Follow taver91 suggestion and check the battery with a multi-meter. If the battery test good, will the car start when jumped? Check your mileage if battery checks out OK. You may still be under the 3 year warrant period. If you purchased an extended warrant, you should still be good to go.
I had same problem today. It started sluggish, went to get donuts, started sluggish on way back. When on driveway tried to start once more.... Clicking repeatedly and the dash flashing... I whipped out the volt meter and got 12.25. when running it's around 14.5 So I tried jumping and it worked after I turned it on for all electronics first... Took it to check battery at Auto part store. I had already bought an AGM battery since I hear with all the bells and whistles and heated seats... This battery does well. When they tested old battery it was good. Not great, but good. This SUV came from Georgia so maybe the cheapo motorcraft 650 cca battery did well, but not in Ohio. It was only pushing about 580-590 cca. Since the switch she starts in under a second. No hesitation. You'll need a 10mm socket to change battery. Did it in five minutes! God speed.