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Hi nascar. Accessory Protocol Interface Module (APIM). Think of it as the brains of the SYNC unit. Have your Dealer look at it and go from there. If it is the APIM, you maybe able to get one relatively inexpensively and replace it yourself. But we can cross that bridge if/when we get to it. Keep us updated and good luck.

Hi nascar. Could be various issues. Is your Explorer still within the 3 year/36,000 mile New Car Warranty/ If yes, make an appointment for service. If not, it could be a problem with the antenna, a failing APIM or any of several other issues. Hopefully you are still within warranty. Let us know how you make out and good luck.

Hi bnewt. The member on the Ford Fusion Forum ("sleepysam22") has verified that he was able to successfully factory update from SYNC v3.3 to SYNC v3.4. The thread is located here: https://www.fordfusionforum.com/topic/20740-sync-34-update/?tab=comments#comment-115280 Hope this information helps and good luck.

Hi bnewt. Hold on my previous comment that SYNC 3.3 can not be factory updated to 3.4. A member on one of the Fusion Forums has just posted that he factory updated his 2019 Fusion from SYNC 3.3 to SYNC 3.4. I am just awaiting verification from him that was what actually occurred. I'll post back as soon as he does. Good luck.

Hi bnewt. What vehicle/model year do you have and what version of SYNC is it equipped with? You can not factory update to SYNC 3.4 from any earlier SYNC versions (3.0, 3.2 etc.). EDIT - Update...However, it seems you can update from 3.3 to 3.4. If you are asking about the third party 3.4 update instructions which are available online, some owners have performed it. Some have had success. Some have had issues. As far as I have seen, many/most of the owners who claim success will admit that they still lost functionality of one service or another, but downplay it by stating that "I didn't use that anyway". And there have been multiple cases of US/Canadian owners winding up with SYNC systems that speak Swedish, French, German etc. The reason for that is these files are taken from European Union or Russian servers. Finally, keep in mind...If your vehicle is still within the New Car Bumper to Bumper Warranty or a Ford/LincolnProtect Extended Service Plan, installing this non-factory update can/will lead to denied claims on any warranty issues concerning SYNC/ Audio/Climate Control/Electronic and even Electrical issues. Essentially anything connected to the SYNC system in any way, even tangentially. If you care about your Warranty, do not perform the third party updates. At least not until your warranty has expired. Sorry for the long post, but it was not clear if you are asking about a factory upgrade to 3.4 (from the SYNC3 Update website), or a third party/non-factory upgrade. Also, posting your vehicle, model year and current SYNC version will help. Good luck with whatever you decide to do.

Hi Multitask. You dig deeper and deeper as you go along. A quote from your other post, "Sometimes the instructions will say to just leave it at the on position...". What now...will you hilariously try to parse words and claim that you wrote "it", not "ignition", "engine" or "car"? 🤣 The facts are, that contrary to what you have posted here, at no time do Fords instructions say that the ignition can be left in the "ON" position for SYNC3 or SYNC3 NAV maps updates. That is 100% false. Ford's directions clearly and consistently state that the engine must be running throughout the entirety of SYNC3 and SYNC 3 NAV maps updates. Not "should" be running. "Must" be running. That is the basis of this entire discussion. So...thank you, for providing the evidence to see you are incorrect and simply will not admit it. Now you attempt to deflect, and argue that since some people have issues when trying to follow Ford's instructions, they should ignore Ford and follow your guaranteed failure idea? Don't listen to Ford, listen to Multitask". Fantastic logic. Follow it yourself in the future and let us know how that works. Then, you now make the excuse (to cover your exposed butt), that you intentionally did something sneaky, editing information being discussed without posting so, in an effort to try and catch someone else pointing out that you did something sneaky... by editing previous posts pertinent to what was being discussed. Fantastic logic again. What an example of twisting yourself into a pretzel. When you got caught with your hand in the cookie jar as a kid, did you tell your parents you were only "taking" the cookies to keep them safe, so that your siblings didn't "steal" them? It is safe to say that type of Pretzel logic didn't work with them either. Finally, you insulted and belittled a new member of a Forum for absolutely no reason. And they called you out on it as the reason they would not participate in that Forum again. And to this date, they have never participated again. And you never apologized. In the same way you began this entire issue by insulting me for no reason. Then you go back and try to alter your insult, and when called out, claim it was part of a brilliant plan. Yes, you are a psychological mastermind. 🤣 Jeez...you made a mistake and posted incorrect information. Not the end of the world. But then just move on without resorting to insulting others to falsely defend that mistake. That would have avoided all of this. Again, this thread was begun to help and inform people about SYNC3 updates. Move your argument to your own new thread.

Hi Multitask. While you have the dictionary out, look up the words "must" and "should". Because the engine must be running. Not "should" be running. Whether you like it or not, "should be running" infers that it is a choice. It is not. The engine "must 'be running during the entire install. Semantics sometimes matter. Therefore, no matter how you try to "semantically" weasel out of this one, the installation can not be accomplished with the ignition simply turned on. You were/are wrong, realistically and semantically. And once again, you fail to admit you were mistaken and gave bad advice , which will cause problems for others. Lincoln/Ford state the engine must be running during the entire install. It is not to keep the battery charged. The installation will fail if the engine is not on to begin, or turned off at any time before completion. "And I looked...he did come back after that, just didn't post"? Really, that is your defense? You insulted someone for absolutely no reason, he clearly states he would no longer participate in the forum because of your insults, and he now no longer posts or participates in the forum. Because of you. And that is your defense? So you give incorrect advice, insult others to the point they no longer participate in a forum, and then are clueless enough to try and accuse me of making fun of things and not being helpful? By the way, Mr. Semantics..."all you do is make fun of things" is not "PC". Also, if someone "...always assumes other people are idiots.", they are not "PC". You do not even know what "PC" means. Make up your mind as to which incorrect story you want to stick to. 🤣 You state: "...and I did explain that my humor is not for everyone... but I also am just a user here, and not a moderator, so I do not have to be as 'PC' as you. People like you, who feel they can be sarcastic comedians and Internet bullies simply because they are anonymous, are a dime a dozen. However...nice attempt at deflection. I started this thread to help others. You posted incorrect information and were politely corrected. If you want to keep this up, start your own thread, where you can post incorrect information and insult me to your little hearts desire. And "learn to know what you don't know". PS - By the way, just noticed you went back and changed your previous, needlessly insulting post (Friday 10:21PM) from "You always assume people are idiots." to "You most of the time assume people are idiots. That would be your needlessly insulting post which started all of this. And you changed it without announcing that you did (as opposed to how I clearly announced my edit). So using your inimitably flawed logic, perhaps we should assume you "must be afraid" and are trying to "hide" something. Important to point out that sneaky change, since it was your incorrect information combined with that unnecessary insult which started this.

Hi Multitask. 🤣 Hmmm...Seems reading is not fundamental for everyone. This entire discussion began because you told people incorrect information about how to install SYNC3 related updates, by telling them it can be done without the engine running the entire time. And after having that information very politely corrected, decided to "double down" on that incorrect information instead of simply moving on. Repeatedly. Would you now like to admit you were wrong before it causes others problems? It is always easy for someone to create a mess with incorrect information. But it is harder for others to clean it up. How about you be "honest", admit you were wrong, stop hiding behind "😎", and clean up your mess? Then to top it off, you decided to deflect attention by making a personal attack on me, stating that I "always assume people are idiots". It is all in the posts above for others to read. Not sure about you, but I am here solely to help people. So, this is what I clearly stated in my last post... I'll underline it this time, for clarity: "And since you were correct in your constructive criticism about you being a member on this particular forum longer, I will go back and edit/correct fact #1 to ensure accuracy." Clear and to the point. A clear admittance of an error be me. And a statement that I would edit it for clarity. So no fear, no hiding. That would be as opposed to you still insisting the car does not have to be running for SYNC3 system and NAV Maps updates. Where is your correction (or admitting you were "wrong"), for telling people something that will lead to failed installations and wasted time for others? I admit when I make an error. You refuse to admit yours. So much for your theory. Also, you seem to be losing the dry and sarcastic sense of humor you are so proud. Or do you only like to dish it out to others, like when you chased away a new member on one of the other forums. A member looking for help, who asked a simple question. You remember, don't you? The new member who, if I recall correctly, called you an "ass" before leaving. I even tried to defend your "dry, sarcastic sense of humor" on that other forum. I won't bother anymore. "Honest" and wrong are two different things. You were wrong. Learn to "know what you don't know" and simply move on. Oh...and "PC"? 🤣

Hi Multitask. 🤣 It is good to see we agree on the other 4 points. And as an added bonus, you did some basic research and were more precise this time. Progress! 😎 And since you were correct in your constructive criticism about you being a member on this particular forum longer, I will go back and edit/correct fact #1 to ensure accuracy. 🤗 And remember...keep on smiling! 😎 Good luck. 😎

😎😎 Hi Multitask. Well, several things. First, I do not assume people are idiots, I've just been around the forums helping other members, and have seen the innocent mistakes people make. So I try to help them avoid those mistakes. And I try to do it without too many wisecracks. 😎 Second, since we are giving fun critiques...you have a habit of being imprecise with what you write, then getting snippy and waffling a bit when it is politely but necessarily corrected. Kind of like you did above. 😎 Third, the instructions for SYNC3 and NAV maps updates always say to have the engine running for the entire install, not "Sometimes the instructions will say to just leave it at the on position". Just like "should be running" and "must be running" are two completely different things. So being more precise, your advice that SYNC3 and NAV map updates can be done without the engine running was incorrect, and will waste other peoples time with failed update attempts. 😎 Fourth, my previous reply was correct, and very polite. I even tried to be extra polite and give you the out by saying, "That is probably what you meant...", even though I did not think that was what you meant. 😎 Fifth, again, the engine must be running for the entire install. 😎 I await your "Whatever". 😎 And remember what you have told others, if you insert this "😎", it's just a dry sense of humor and everything is okay. 😎 Good luck. 😎

Hi Multitask. Just to avoid confusion for others, wanted to make one small addition to what you stated above: It is not that the engine "should" be running. The engine must be running the entire time. If it is not, or if the engine is turned off during the install, then the install will fail and will need to be started over from the beginning. That is probably what you meant, but just want to make it completely clear for others. Good luck.

Hi bnewt. Yes, if you have an available SYNC3 NAV maps download, you will be given links for: - How to download the update from the website. - How to install the update onto the USB drive you are using. - How to upload the update into your vehicle's SYNC system using one of the USB ports. Just read and follow the instructions closely and take your time. Especially for the upload of the update in your vehicle. Assume it will take an hour and ignore the possible false early "Update Complete" notifications (as discussed earlier in this thread). Feel free to ask any questions you and have and good luck.

Hi bnewt. Did you input your information on the SYNC3 NAV maps update website (link in the first post of this thread)? Do you have a maps update available? Not sure exactly what instructions you are looking for. The detailed instructions are available for download when you download an available update. Get back to us with more information.

Hi RoNeR. I can answer one of your questions: It is not "safe" to use any "unofficial" SYNC update. Using any non-factory approved SYNC update can/will cause warranty issues if you should have any type of SYNC/Audio/Electronic/Electrical issues later. Plus, no matter how well they seem to work in the beginning, these unofficial updates all seem to cause issues with one function or another. I would advise against it. Good luck with whatever you decide to do.

Hi again gang. I successfully updated my SYNC 3 Navigation system maps on a long drive yesterday. The latest version is NA 1 19 However, I would give the same warnings I have given to others on past updates: You may/will get a very quick notification (within minutes of beginning the update), essentially stating that the "Update is complete, remove the USB, restart the car..." etc. However...Do not remove the USB and do no restart the car, etc! The update is not complete. If you leave the USB in and wait about 5 minutes, your SYNC system will reboot and the "System Update" will resume and continue. This may even happen a second time. As the NAV maps website states, the update will take ~1 hour. Therefore, I recommend waiting at least 10 minutes after any "Update is complete" notifications before removing the USB and restarting your car, to ensure it is not another false notification. In this way, you can be sure the SYNC system is not going to go through another reboot and resume the update. Just be patient and assume it will take approximately a full hour. Hope these instructions are clear and understandable. Good luck.