16,000 miles. I purchased a 2017 Fusion S in late December 2016. Within a few days, I found the battery was dead after sitting overnight. Initially thought it was due to my mistake of leaving something on or plugged in to the 12V jack. In Jan 2017, I realized the problem was the car. 3. within 10 seconds insert the new key in the ignition and turn the ignition to "on", if you are successful the red key symbol will illuminate then extinguish after about a second. If you are not successful the red key symbol will flash repeatedly to indicate that you have inserted an invalid key. 16,051 satisfied customers. I just replaced a dead car battery and the alarm keeps going. I just replaced a dead car battery and the alarm keeps going off. The batteries in two key fobs both unlock the car, pop the trunk, but wont turn off the … read more. I can't open my car with the remote key button. Asked by Bill Dec 07, 2014 at 01:29 AM about the 2013 Ford Fusion Energi SE. Question type: General. I own a 2013 Ford Fusion Hybrid - Energy sedan. The parking lights are on and when I. tried to open the door with my remote key; it won't unlock the door nor trunk. I don't. To open the door of your Ford C-max that has no more battery, you will have to turn the key in the lock and at the same time try to pull the door handle . Repeat this process if it doesn’t work on the first door on the second one, if it still doesn’t work, go to the next step of this content page. Put yourself in front of your trunk, and look around the handle of the trunk, you should discover a small trap door behind which hides the mechanical lock in which you will be able to insert and turn your key. Once this is done, you will be able to open the trunk of your Ford Taurus with a dead battery and access the interior of your car and Demonstrating how to open the hood on a Ford Fusion. .Ford Fusion Hacks and Instructions Playlist! Method 1: Use the Key Fob. If you have a key fob for your Ford Fusion, you can still use it to open the trunk even if the battery is dead. Look for the button on the fob that has an icon of a car with an open trunk. Hold down this button for a few seconds, and the trunk should unlock. e0ScPwh.