Unitronic FeatureBox And UAF Control App
- Mfg Part #
- UH025-ACA
- ECS Part #
- ES#5424774
- Brand
-
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Product Details
Take control of your driving experience with the Unitronic FeatureBox and UAF Control App designed for the latest VW® and Audi® performance vehicles. Featuring expertly calibrated Software and Bluetooth-ready hardware, this powerful combination delivers true on-the-fly adjustability—directly from your smartphone.
With seamless integration between the FeatureBox and the UAF Control mobile app (available for iOS and Android), 8Y RS3®, MK8 GTI® / Golf R®, and 8Y S3® enthusiasts can fine-tune numerous performance features in seconds while also enabling new functions altogether.
Instantly adjust launch control boost and RPM set points, manage advanced traction control parameters, enable rolling launch control, customize pops & bangs, set exhaust flap behavior and more.
The Unitronic Advanced Feature suite redefines what’s possible, giving enthusiasts a smarter, more flexible way to personalize their vehicles.
Software Add-On Required: A $250 UAF Software Add-On is required in order to enable Unitronic Advanced Features on top of your base Unitronic Staged Software. Contact Unitronic or your preferred Authorized Dealer for more information.
NOTE: If vehicle is already equipped with UniFLEX, the Unitronic FeatureBox is not required in order to enabled Advanced Features.
Features / Benefits
- Direct CAN-bus integration
- Plug-n-play harness – no cutting, splicing, or ECM re-pinning
- Bluetooth® connectivity with UAF Control App (iOS/Android)
- Adjust launch control boost levels and RPM set points
- Advanced traction control management (2.0TSI® EVO4)
- Pops & bangs intensity and duration customization
- Rolling launch control for on-demand performance
- Exhaust valve behavior settings
- No-lift-shift (NLS) and standing launch control (6MT vehicles)
- Over-the-air (OTA) updates
Hardware Included
- Unitronic FeatureBox
- Plug-n-play wiring harness
Required Software
- UAF Software Add-On ($250)
- Base Unitronic ECU Staged Software
- Contact Unitronic or our ECS Tuning sales staff to upgrade today.
You asked, Unitronic answered. Unitronic is pleased to introduce the latest Advanced Feature: UniLOCK, now available within the UAF Control iOS/Android apps and tune add-on. UniLOCK allows users to immobilize their UAF-enabled vehicles and serves as an extra layer of protection to aid in theft deterrence. No matter what your circumstances may be, the UniLOCK Immobilizer puts an added layer of protection and control in the palm of your hand. Now available for MK8 GTI®, Golf R® and 8Y S3® customers. Updated 04/08/2026: 8Y RS3® support now added.
Immobilize Your Vehicle Instantly
Enabling or disabling the UniLOCK is simple and can be done within seconds right from within the UAF Control app for iOS and Android mobile devices. Once locked, you’ll see “222” on the factory torque gauge built into the instrument cluster indicating engine start is currently inhibited. When you’re ready to drive again, simply open the UAF Control App and unlock within seconds.
Feature Drop for Existing UAF (Advanced Feature) Clients
UniLOCK is the latest Unitronic Advanced Feature (UAF) to drop and as such, is accessible on supported platforms for existing clients with UAF-enabled ECU tunes at no extra cost. Existing clients can reflash the ECU via UniCONNECT+ in order to get the latest UAF features into their ECU.
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| Audi | 8Y RS 3 | Quattro | 2.5T | Use vehicle selector to confirm fitment |
| Audi | 8Y S3 | Quattro | 2.0T | Use vehicle selector to confirm fitment |
| Volkswagen | Golf VIII | FWD | 2.0T Evo4 | Use vehicle selector to confirm fitment |
| Volkswagen | Golf VIII R | 4Motion | 2.0T Evo4 | Use vehicle selector to confirm fitment |
This Product Is Covered By Our Lifetime Replacement Program
Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.
If you have any questions, would like to learn more or are ready to place a replacement claim, click here!
Return and Exchanges
Need to set up a return? Click here to begin: Return Process
All you need is your order number and email address.
New/Unused Product Returns
ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.
Refused Packages
Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!
Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
Want to know more about our Lifetime Replacement program?
Click here to learn more.
Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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