If the Ford Ranger auto start stop is not working then the fuse that powers the system is bad. To get to the fuse box look to the left of the steering wheel look for a small seam or crack along the dash. Using a screwdriver or prybar you will want to pop this open. On the inside, you will find a bunch of fuses.On the back of the panel that you pulled open, you will see a diagRam that will show you what each of the fuses is for. If this is not on the back of the panel then you can also find it in the owner's annual for the vehicle. Once you have figured out which fuse you need simply pull it out.The two sections that stick up should be connected by a thin strip of metal. If this has been broken then the fuse is no good and will need to be replaced. If this strip is there then the fuse is fine and can be popped back in. New fuses will cost you about 10 dollars, so they are pretty cheap.
Wlc
September 13, 2021
If you have something plugged into the 120volt plug, the auto stop/start is disabled. I finally found that to be the reason that mine would work sometimes and didn't work at others for what seemed to be for no reason. While stopped (engine was running) I unplugged the plug and the engine immediately stopped running.
Les Lamb
August 7, 2021
If your heater is diverted to the windscreen, the engine auto-off is disabled. Not sure why, maybe figures the engine needs to run to keep heater hot.
Eugene M.
April 10, 2020
This could be due to a dead cell in the battery. Have the dealership or a mechanic test the battery
I just purchased a 2020 Ford Ranger XLT Sport and the stop/start is not working. Dealership tested the AGM battery and the voltage was 12.4 volts but the CCA rated at 650 came back with a value of 393. Dealership says I need to charge it more. I’m not buying it
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