bradrobinson78@outlook.com Report post Posted September 27, 2021 My battery was new 9/2020, came out yesterday morning and it is dead, registering 1.7V. Finally got the trunk open and got a new battery via my warranty on the old one, no additional cost. Everything lights up etc., but the car won't start. I have a red triangle showing and an image of a battery showing? Can't seem to find any help in my owner's manual. I really don't want to tow it to my mechanic or even the local Ford dealer money is a bit tight right now, hoping to getting it going on my own. Any help?? Quote Share this post Link to post Share on other sites
murphy Report post Posted September 27, 2021 If you mean that the engine won't start, the engine is started by the high voltage battery. Does the green light in the the lower right corner of the display turn on? If yes, the car is on. With the car in Park press the accelerator pedal all of the way and wait. If it starts, release the pedal. Did you try to drive it"? If the green light is on you should be able to move the car under battery power. Quote Share this post Link to post Share on other sites
Alan Bradly Report post Posted January 22, 2023 Does the starter not turn the engine crankshaft at all? The cause here could be a blown F14 fuse in the Ford Fusion fuse box (installed under the dashboard), wiring failure, a short in the starter circuit, or poor quality contact connections. Does the starter even start or does it not make a sound at all? Quote Share this post Link to post Share on other sites
Alan Bradly Report post Posted January 22, 2023 It is also possible that a violation of the quality of contacts, burnout contact connections on the traction relay, the appearance of large amounts of dirt on the collector, short or intercircuit closing in the winding (this phenomenon is one of the most dangerous), heavy wear on the brushes. Quote Share this post Link to post Share on other sites
MeeLee Report post Posted February 20, 2023 (edited) Sounds like a fuse or 12v charger issue. Your prior lead acid battery went dead, more than likely because the charger fuse blew. Your car turns on with the new 12v l/a battery, because it's running on that battery, not on the high voltage battery. To verify, open the trunk, and measure the lead acid battery voltage. Should be around 11.7 to 13.3V. Now turn on the vehicle (break and press start), and measure again. If the voltage is the same, or lower, you got an issue in the controller and need to visit a dealer or a mechanic that can work on hybrid vehicles. With the car on (engine doesn't need to be running), the battery charge voltage at the connectors should read between 14.4v and 15V peak. The hybrid vehicle by default never starts the engine, but you can force start it by pressing brake while turning on the car (standard starting procedur, and while still in park, press the throttle about halfway in, to all the way in. That should start the engine. If the high voltage battery has enough charge, the engine will stop as soon as the throttle is released. If the battery needs more power, or the engine is very cold, the engine will continue running for a while, before turning off. Edited February 20, 2023 by MeeLee Quote Share this post Link to post Share on other sites
