Last updated: June 2026
Upgrading your Ford F-150 from Sync 3 to Sync 4 is one of the best modifications you can make — a bigger screen, wireless CarPlay, and a modern interface that transforms your driving experience. But not all Ford Sync 4 upgrade kits are created equal.
We've been in this space since 2023 and have helped over 5,000 Ford owners upgrade. In that time, we've seen dozens of kits come and go. Some work great. Some leave you with broken features, mysterious error codes, and a truck that's worse off than before you started.
This guide walks you through exactly what to look for — and what to watch out for — before you spend $1,500+ on a Sync 4 upgrade kit for your F-150, F-250, F-350, Expedition, Explorer, or Maverick.
The Biggest Difference Most People Miss: HVAC Controls
This is the single most important technical detail that separates a complete upgrade from an incomplete one, and most buyers don't even know to ask about it.
Your 2015–2020 F-150 came with a module called the FCIM (Front Controls Interface Module). This module handles your physical climate control buttons — the knobs and buttons you use to adjust temperature, fan speed, and seat heating.
Here's the problem: most upgrade kits on the market keep your original FCIM. They do this for three reasons:
- Cost savings — designing and manufacturing a new dash bezel with integrated Sync 4 HVAC controls is expensive.
- Mold complexity — the tooling required for a new bezel is a significant engineering investment.
- Technical limitation — replacing the FCIM with the newer Sync 4 HVAC module requires deep knowledge of Ford's CAN bus architecture that most companies simply don't have.
So what happens when a kit keeps your old FCIM but installs the new Sync 4 screen with its built-in climate control interface?
The passenger-side temperature bar on the Sync 4 screen becomes uncontrollable. You can see it on screen, but adjusting it does nothing — because the old FCIM and the new Sync 4 climate interface are sending conflicting signals. Your passenger is stuck with whatever temperature was last set, and the only way to change it is through the physical knobs (if they still work correctly with the mixed signals).
This is not a minor inconvenience. It's a fundamental incompatibility that can't be fixed with a software update or a FORScan tweak. The only real solution is to replace the FCIM with the proper Sync 4 HVAC module — which is exactly what our kits do.
What to ask before you buy: "Does your kit replace the FCIM with a Sync 4 HVAC module, or does it keep the original FCIM?" If the answer is "keeps the original," you're buying a kit with a known climate control conflict.
The Complete Feature Checklist: What Works and What Doesn't
When you upgrade from Sync 3 to Sync 4, your truck's modules need to communicate with a completely different software architecture. How well a kit handles this determines whether you get a seamless upgrade or a list of broken features.
Here's what you should verify before purchasing any kit:
Radio Presets and AM/FM (2015–2018 trucks)
Many kits lose all radio presets on 2015–2018 F-150s. You'll see every preset display as "preset-1" and pressing them does nothing. This happens because the older ACM (Audio Control Module) software doesn't communicate correctly with Sync 4.
Some vendors offer an ACM add-on module for an extra $99–149 to fix this. Others include a solution at no additional cost. Make sure you understand what's included in your kit price versus what costs extra.
What to ask: "Will my radio presets work on my [year] F-150, or do I need to buy an additional module?"
SiriusXM Satellite Radio (2015–2018 trucks)
This is closely related to the radio preset issue. On 2015–2018 trucks, SiriusXM functionality is tied to the ACM. Most kits on the market today lose SiriusXM on these model years.
The industry is actively working on solutions that preserve SiriusXM without requiring customers to purchase additional hardware. If SiriusXM is important to you, ask specifically about your model year and what (if any) additional cost is involved.
What to ask: "Will SiriusXM work on my 2015–2018 F-150? Is there an additional cost for the module needed?"
360-Degree Camera System
If your truck came with the 360-degree camera system, pay close attention to this. Some kits will keep the physical camera button on your dash working but lose the on-screen buttons for switching between different camera angles (front, rear, side, overhead views).
This means you can activate the camera but can't toggle through views on the touchscreen — a significant downgrade from what your truck could do with Sync 3. If you run into this or other post-install quirks, see our guide to fixing common Sync 4 upgrade issues.
What to ask: "Will I be able to switch 360 camera angles using the on-screen buttons, or only the physical dash button?"
Phone Call Audio (all trucks with the original 4″ non-touchscreen radio)
This is a sneaky one. On Ford trucks that originally came with the small 4-inch non-touchscreen radio, some kits ship with a bug: you can make phone calls, but you can't hear the other person through the truck's speakers.
Here's the thing — this is not a hardware problem, and it does not require you to buy a new ACM module. It's a single configuration value in the ACM. In the ACM AS BUILT data, the line reads:
727-01-01 D/5*XXX XXXX XXXX
Changing the leading D or 5 to 1 or 9 restores phone call audio through the speakers. That's the entire fix. (As always, save your original AS BUILT data with "Save All" before editing anything — see our FORScan programming guide for the full procedure.)
Some vendors charge $99+ to "program" this for you. Now you know it's a one-value edit that takes under a minute — so if you're being billed $99 for it, you're paying for thirty seconds of work. Our kits handle it as part of standard setup, at no extra cost.
What to ask: "On my 4-inch-screen truck, will phone call audio work out of the box — or is there an extra programming charge?"
FordPass Connectivity
FordPass is how many F-150 owners remotely start their truck, check fuel levels, and lock/unlock doors. Most Sync 4 kits will keep FordPass working initially, but here's the catch: if you ever need to perform a "master reset" on the Sync 4 system (which can happen during troubleshooting), FordPass will stop working — and the only way to reactivate it is to reinstall your old Sync 3 system temporarily.
What to ask: "If I need to master reset the Sync 4 system, will FordPass survive? And if not, how do I restore it?"
Navigation
Sync 4 comes with Ford's built-in navigation system, but on some APIM modules, you may find that navigation only displays a map without allowing you to input destinations. This is typically related to Ford's subscription requirement for full nav functionality and varies by the specific APIM module supplied with your kit.
Most users rely on CarPlay/Android Auto for navigation anyway, so this may not be a dealbreaker — but it's worth knowing upfront.
What to ask: "Does the navigation system allow me to type in destinations, or is it map-display only?"
Software Updates
Ford regularly releases over-the-air (OTA) software updates for Sync 4. However, there's an important nuance: the newest Ford software releases are designed for the latest model year vehicles, and installing them on an older truck with a retrofit Sync 4 system can cause compatibility issues.
A reputable installer or dealer can update your APIM to the latest compatible version — the key word being compatible. Blindly updating to the absolute newest release can introduce instability. Make sure your kit provider has a clear policy on which software versions are safe for your specific truck.
What to ask: "Can the system be updated? Who handles updates, and how do you ensure compatibility with my model year?"
FORScan: Do You Need It?
FORScan is a specialized software tool that communicates with your Ford's onboard computer modules. Some Sync 4 kits require you to use FORScan to program various modules after installation — which means you need a Windows laptop, an OBD2 adapter, and a fair amount of technical knowledge. (If your kit does require it, our step-by-step FORScan programming guide walks you through the whole process.)
Other kits are designed to be true "plug and play" — meaning the APIM comes pre-programmed for your specific truck's VIN and configuration, and no FORScan programming is needed after installation.
If you're comfortable with FORScan, a kit that requires it isn't necessarily a problem. But if you want a straightforward install without touching software, make sure the kit explicitly states that FORScan is not required.
What to ask: "Is FORScan required for installation or setup? Is the APIM pre-programmed to my VIN?"
The "Salvaged Parts" Question
Let's address the elephant in the room. Almost every Sync 4 upgrade kit on the market — regardless of brand or country of origin — uses OEM Ford screens and APIM modules that were sourced from existing vehicles or Ford's parts supply chain. This is because Ford does not sell Sync 4 APIM modules and 12-inch screens as standalone aftermarket parts.
The real question isn't "new vs. salvaged" — it's:
- Are the parts tested and verified before shipping? Every module should be individually tested on a vehicle before it leaves the facility.
- Is the APIM reprogrammed for your VIN? A properly reprogrammed module should function identically to a factory-installed one.
- What warranty is provided? Look for at least a 1-year warranty on electronic components.
- What happens if something doesn't work? Does the company offer remote diagnostics and support, or are you on your own?
Don't let any company claim their parts are "brand new from Ford" — if they're making that claim, they're either misleading you or charging a significant premium for surplus dealer stock.
Installation: What to Expect
A well-designed Sync 4 upgrade kit should take 2–4 hours for someone comfortable with basic automotive work (removing interior panels, connecting wiring harnesses). Here's what affects installation complexity:
Simpler installs feature pre-wired harnesses with OEM connectors that plug directly into your truck's existing wiring, a dash bezel that replaces only the center trim piece (not the entire dash), and a pre-programmed APIM that requires no software configuration.
More complex installs involve kits that require you to swap the entire center console or dashboard, kits that need FORScan programming after installation, or kits that require soldering, wire splicing, or module modification.
Also ask whether the company provides installation support. Some companies offer remote assistance via video call or can remotely access your truck's OBD port to help with programming — this can be invaluable if you run into issues during installation. You can also find a vetted installer through our Installer Near Me directory.
Price vs. Value: What Are You Really Paying For?
Most Sync 4 upgrade kits for the 2015–2020 F-150 fall in the $1,500–2,000 range. At this price point, the raw hardware cost (screen + APIM + wiring + bezel) is relatively similar across vendors. What you're really paying for is:
- Engineering and R&D — How much work went into making sure every feature works? This is where cheap kits cut corners.
- Pre-programming and testing — Is each kit programmed and tested for your specific truck, or is it generic?
- The bezel and HVAC integration — Does the kit include a proper Sync 4 dash bezel with integrated HVAC controls, or does it reuse your old FCIM (with the passenger temperature issue)?
- Support — What happens after you buy? Do you get installation support, remote programming assistance, and warranty service?
A $200 price difference between kits is meaningless if the cheaper one loses your radio presets, breaks your 360 camera controls, and leaves you with an uncontrollable passenger temperature bar.
The Bottom Line: Questions to Ask Before You Buy
Before purchasing any Sync 4 upgrade kit, get clear answers to these questions:
- Does the kit replace the FCIM with a Sync 4 HVAC module, or does it keep the original? (If it keeps the original, the passenger temperature bar won't work correctly on the Sync 4 screen.)
- Will my radio presets work? If not, what's the additional cost to fix it?
- Will all 360 camera functions work, including on-screen angle switching?
- Is FORScan required? Is the APIM pre-programmed to my VIN?
- What warranty is included? What does support look like after purchase?
- Do you provide installation instructions, videos, or remote assistance?
- How long has your kit been on the market, and how many have you sold?
A company that can confidently answer all of these questions has done the engineering work to earn your money. A company that dodges them or says "coming soon" is still figuring it out — and you'll be the beta tester.
Frequently Asked Questions
How much does a Ford Sync 4 upgrade kit cost?
Most Sync 4 upgrade kits for the 2015–2020 F-150 fall in the $1,500–2,000 range. The hardware cost is similar across vendors; the price difference reflects engineering, per-VIN pre-programming and testing, proper HVAC/bezel integration, and after-sale support.
Why does the passenger-side temperature bar stop working after a Sync 4 upgrade?
Because most kits keep your original FCIM (Front Controls Interface Module) instead of replacing it with a Sync 4 HVAC module. The old FCIM and the new Sync 4 climate interface send conflicting signals, which makes the on-screen passenger temperature bar unresponsive. The only real fix is a proper Sync 4 HVAC module replacement.
Do I need FORScan to install a Sync 4 upgrade kit?
It depends on the kit. Some require FORScan programming after installation (Windows laptop + OBD2 adapter needed). True plug-and-play kits ship with an APIM pre-programmed to your VIN, so no FORScan is required. Always confirm before buying.
Should I pay extra to fix phone call audio on a 4-inch-screen truck?
No. On trucks with the original 4-inch non-touchscreen radio, missing call audio is a single ACM configuration value, not a hardware fault, and takes under a minute to correct. Some vendors charge $99+ for it; a well-supported kit includes it at no extra cost.
Are Sync 4 kits made from new or salvaged parts?
Ford does not sell Sync 4 APIM modules and 12-inch screens as standalone aftermarket parts, so virtually every kit on the market uses OEM parts sourced from existing vehicles or Ford's supply chain. What matters is whether each module is individually tested, reprogrammed to your VIN, and backed by a warranty and support.
At FordSync4.com, we've spent three years and over 5,000 installs perfecting our Sync 4 upgrade kits. Our 2025/2026 kits feature a full Sync 4 HVAC module replacement (not the original FCIM), pre-programmed APIMs, and plug-and-play installation with no FORScan required. We offer 12-inch, 13.2-inch, and 15.5-inch screen options for the F-150 and F-250/F-350, Explorer, Expedition, and Maverick.
Have questions? Contact us or, if you're a shop, learn about our dealer program.