{"product_id":"auto-start-stop-eliminator-2019-2020-ford-f150-left-switch-memory-harness","title":"2019-2020 Ford F-150 Auto Start Stop Eliminator | Left-Side Switch Harness","description":"\u003cp\u003eThis switch memory harness is for the 2019–2020 Ford F-150. It stores the last stop-start setting you chose, so if you turned Auto Start-Stop off on one drive, it stays off the next time you start the engine. It plugs in between the stop-start switch and its factory connector, so the button keeps working as before.\u003c\/p\u003e\u003cp\u003eYou can still use the original button at any time. Whatever you select last is what the module repeats on the next start. Take the module out and the vehicle behaves exactly as it did from the factory.\u003c\/p\u003e\u003ch2\u003eCovered model years\u003c\/h2\u003e\u003cp\u003eThe fitment table for this SKU lists the following, each marked as a 100% fitment match:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eFord F-150: 2019–2020\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eFor reference, the Ford F-150 in these years is a full-size pickup offered with 2.7L and 3.5L EcoBoost V6 and 5.0L V8 engines, with the 3.0L Power Stroke diesel and 3.5L PowerBoost hybrid offered on selected years. The listing is written around the thirteenth-generation (2015-2020) F-150. Trim is not listed separately. Any trim in these years with factory stop-start and the pictured connector is covered.\u003c\/p\u003e\u003ch2\u003eHow Auto Start-Stop behaves from the factory\u003c\/h2\u003e\u003cp\u003eAuto Start-Stop is designed to default to on. The off switch (usually marked with an \"A\" inside a circular arrow) cancels it for the current drive. At the next start the system is armed again. That reset is intentional on the manufacturer's side, and it is the only behavior this module changes.\u003c\/p\u003e\u003ch2\u003eWhy owners turn it off\u003c\/h2\u003e\u003cp\u003eStop-start saves the most fuel in long idles, but plenty of drivers would rather keep the engine running. Common reasons: towing or hauling, where an engine restart under load is unwelcome; drive-thru lines and parking lots, where the engine cycles on and off every few feet; hot days, when the A\/C compressor stops with the engine on many vehicles; and stop-and-go traffic where the restart delay is noticeable when pulling into a gap. On a full-size pickup, any of these can mean a button press at the start of nearly every drive.\u003c\/p\u003e\u003ch2\u003eConditions the factory system checks\u003c\/h2\u003e\u003cp\u003eThe factory system will skip an auto stop for many reasons: battery charge below its threshold, cold coolant, high climate-control load, a steep grade, the hood or driver door open, or a 4WD or tow mode on vehicles that have them. Those checks stay in control after this module is installed. It does not force stops and it does not bypass any of those safety inputs.\u003c\/p\u003e\u003ch2\u003eKeep the battery healthy\u003c\/h2\u003e\u003cp\u003eVehicles with stop-start normally use an AGM or EFB battery sized for repeated restarts. If you replace it, use the same type and size, and follow the manufacturer's battery reset or registration step where one exists. A wrong or unregistered battery can leave the stop-start system disabled, and that has nothing to do with this module.\u003c\/p\u003e\u003ch2\u003eBefore blaming the module\u003c\/h2\u003e\u003cp\u003eIf a \"stop-start unavailable\" or similar message appears, check the battery first. A battery that tests weak, a recent battery replacement that was not registered where the manufacturer requires it, or a fault in the battery current sensor can all disable the system. Clear up those issues before judging how the module works, because it cannot hold a setting the vehicle refuses to accept.\u003c\/p\u003e\u003ch2\u003eInstalling the switch memory harness\u003c\/h2\u003e\u003cp\u003eIt plugs in between the stop-start switch and its factory connector, so the button keeps working as before. Because it is plug-in only, removal is the reverse: unplug the module and reconnect the factory connectors directly. Keep the original clips and trim fasteners if you remove a panel to reach the connector.\u003c\/p\u003e\u003ch2\u003eWhat to expect\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLeaves no permanent change after removal.\u003c\/li\u003e\n\u003cli\u003eHolds the stop-start button state between drives.\u003c\/li\u003e\n\u003cli\u003eLets you re-enable the system with the factory button at any time.\u003c\/li\u003e\n\u003cli\u003eLeaves engine and transmission software untouched.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment check\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eModel year and model match a row in the table above (2019–2020 Ford F-150).\u003c\/li\u003e\n\u003cli\u003eYour Ford F-150 has the factory stop-start button. Base trims or engines without stop-start have nothing for the module to remember.\u003c\/li\u003e\n\u003cli\u003eNo aftermarket remote start, alarm or gateway bypass is wired into the same circuit. If one is, email support before ordering.\u003c\/li\u003e\n\u003cli\u003eThe connector at your install point matches the one in the product photos.\u003c\/li\u003e\n\u003cli\u003eThe battery and charging system test good and no warning lights are on.\u003c\/li\u003e\n\u003cli\u003eIf you are unsure, send your VIN to support@automotivebypass.com and we will confirm fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEvery listed year\u003c\/h2\u003e\u003cp\u003eThe full fitment data for this part, by year:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine \/ trim\u003c\/th\u003e\n\u003cth\u003eListing note\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-150\u003c\/td\u003e\n\u003ctd\u003eAll with factory stop-start\u003c\/td\u003e\n\u003ctd\u003e100% Fitment Match | OEM-Grade Quality | Plug \u0026amp; Play\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-150\u003c\/td\u003e\n\u003ctd\u003eAll with factory stop-start\u003c\/td\u003e\n\u003ctd\u003e100% Fitment Match | OEM-Grade Quality | Plug \u0026amp; Play\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eNon-latching:\u003c\/strong\u003e A setting that does not stay where the driver left it after a restart.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAuto Start-Stop:\u003c\/strong\u003e Ford's name for the automatic engine stop-start feature on the Ford F-150.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAGM \/ EFB battery:\u003c\/strong\u003e Battery types designed for the frequent cycling of stop-start vehicles.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey cycle:\u003c\/strong\u003e One switch-off and restart of the vehicle. Factory stop-start resets at each key cycle.\u003c\/p\u003e\u003ch2\u003eThe reason the button has to be pressed every trip\u003c\/h2\u003e\u003cp\u003eUS fuel-economy testing explains the reset. If a stop-start system is non-latching, meaning it switches back on whenever the vehicle is restarted, the EPA measures fuel economy with the system working. If the driver can switch it off permanently, the EPA tests with it both on and off and averages the two, which gives a lower number. Manufacturers therefore make the system come back on at every start, and drivers who prefer it off end up pressing the button each trip.\u003c\/p\u003e\u003ch2\u003eInstall prep checklist\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePark on level ground, shift to Park, switch the ignition off and keep the key or fob away from the vehicle.\u003c\/li\u003e\n\u003cli\u003eRead the included instructions for your model before removing any trim.\u003c\/li\u003e\n\u003cli\u003eLocate the connector named in the instructions and compare it with the plugs on the module.\u003c\/li\u003e\n\u003cli\u003eUse a plastic trim tool where a panel has to be eased out, to avoid marking the dash.\u003c\/li\u003e\n\u003cli\u003ePress each connector until the lock clicks; never force a plug that does not line up.\u003c\/li\u003e\n\u003cli\u003eSecure the module with the supplied tie or tape so it cannot rattle or touch moving parts.\u003c\/li\u003e\n\u003cli\u003eStart the vehicle, set Auto Start-Stop the way you want it, switch off, restart and confirm the setting held.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHardware built for frequent restarts\u003c\/h2\u003e\u003cp\u003eTo cope with repeated restarts, stop-start vehicles normally carry an AGM or EFB battery and a heavier-duty starter, and the system watches battery charge closely. If the battery is weak, the vehicle will skip automatic stops on its own. The module leaves this hardware and its monitoring alone. Use the factory battery type when replacing it, and check the owner's manual for any battery reset step after replacement.\u003c\/p\u003e\u003ch2\u003eIf something is not right\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eChoice is forgotten after restart:\u003c\/strong\u003e A plug is usually not fully home. Push each until it latches and test again.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIndicator says the system is unavailable:\u003c\/strong\u003e The vehicle has decided conditions are not right for an automatic stop. This is normal factory behavior.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWarning appears:\u003c\/strong\u003e Remove the module, reconnect the original plug and confirm the warning clears, then contact support.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEngine keeps shutting off at stops:\u003c\/strong\u003e Switch Auto Start-Stop off once. The module stores the off state for the next start.\u003c\/p\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003ch3\u003eHow does it connect?\u003c\/h3\u003e\u003cp\u003eIt plugs in between the stop-start switch and its factory connector, so the button keeps working as before.\u003c\/p\u003e\u003ch3\u003eWhy does my Ford F-150 sometimes not auto-stop even when the system is on?\u003c\/h3\u003e\u003cp\u003eThe factory logic checks battery charge, engine temperature, climate load and other inputs. If any are outside range it keeps the engine running. The module does not affect those checks.\u003c\/p\u003e\u003ch3\u003eWhich Ford F-150 years does this fit?\u003c\/h3\u003e\u003cp\u003eThe listed range is 2019–2020. Check the fitment table on this page against your exact model year.\u003c\/p\u003e\u003ch3\u003eDoes it change engine power or fuel trims?\u003c\/h3\u003e\u003cp\u003eNo. It does not reprogram the engine or transmission computers. It only stores the stop-start button state.\u003c\/p\u003e\u003ch3\u003eWill Auto Start-Stop come back on when I restart my Ford F-150?\u003c\/h3\u003e\u003cp\u003eNot if you turned it off before shutting down. The module repeats your last selection at the next start. If you leave it on, it stays on.\u003c\/p\u003e\u003ch3\u003eIs this the same part for every Ford?\u003c\/h3\u003e\u003cp\u003eNo. Connectors and the module that holds the stop-start state differ by platform, so this SKU is matched to the fitment rows on this page. Send the VIN to support if you are unsure.\u003c\/p\u003e\u003ch3\u003eWill it fix a \"stop-start unavailable\" message?\u003c\/h3\u003e\u003cp\u003eNo. That message usually points to the battery or a sensor. Diagnose and repair that first.\u003c\/p\u003e\u003ch3\u003eDoes my Ford F-150 need the factory stop-start button for this to work?\u003c\/h3\u003e\u003cp\u003eYes. The module works with the factory stop-start system and its button. A vehicle built without stop-start has no setting for it to remember.\u003c\/p\u003e\u003ch3\u003eWhat happens if I unplug it?\u003c\/h3\u003e\u003cp\u003eThe vehicle returns to the factory default, with Auto Start-Stop switched on at every start.\u003c\/p\u003e\u003ch3\u003eCan I remove it later?\u003c\/h3\u003e\u003cp\u003eYes. Unplug the module and reconnect the factory connector; the vehicle returns to its stock default.\u003c\/p\u003e\u003ch3\u003eDoes it change how the battery is charged?\u003c\/h3\u003e\u003cp\u003eNo. Charging is still managed by the vehicle. Stop-start vehicles normally use an AGM or EFB battery built for frequent restarts; replace it with the same type when it wears out.\u003c\/p\u003e\u003ch3\u003eDoes the stop-start button still work after installation on the Ford F-150?\u003c\/h3\u003e\u003cp\u003eYes. The factory button works normally. The module simply stores whatever you chose last.\u003c\/p\u003e\u003ch3\u003eWhy does Auto Start-Stop turn itself back on every time?\u003c\/h3\u003e\u003cp\u003eAutomakers set stop-start to default to on at each start. Under EPA test rules, a system that stays off after shutdown is tested both on and off and the results are averaged, which lowers the rated fuel economy, so most systems reset at every key cycle. The module carries your last choice across that reset.\u003c\/p\u003e\u003ch2\u003eShipping, returns and warranty\u003c\/h2\u003e\u003cp\u003eFree standard shipping covers the contiguous US, with dispatch in 1–2 business days and 3–4 days on the road after that. You have 45 days to request a return (pre-approval required, 20% restocking fee, buyer-paid return shipping). The module is backed by a 3-year limited warranty. For order or fitment questions, write to support@automotivebypass.com between 9 and 5 Pacific, Monday through Friday.\u003c\/p\u003e","brand":"Automotivebypass","offers":[{"title":"Default Title","offer_id":56493811499380,"sku":"RC-ASSE-36-01","price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/8439\/2820\/files\/2019-2020_Ford_F-150_Auto_Start-Stop_Eliminators_1.jpg?v=1793347943","url":"https:\/\/automotivebypass.com\/products\/auto-start-stop-eliminator-2019-2020-ford-f150-left-switch-memory-harness","provider":"Automotivebypass","version":"1.0","type":"link"}