Frequently Asked Questions
Everything you need to know about this head unit
Connect the single RCA cable with the yellow plug (included in your package) to extend your Bluetooth signal. This cable doubles as both a camera input AND a Bluetooth/WiFi antenna extension. The two small blue wires attached are antenna boosters that significantly improve connection stability. This simple connection takes 30 seconds and resolves 90% of Bluetooth issues. Make sure it's firmly connected even if you're not using a rear camera.
Try these proven solutions:
1. Quick Fix: Settings → Apps → Z-Link → Disable → Enable → Open (repeat each use)
2. Check Cables: Use the data/charge USB cable (not charge-only)
3. Bluetooth Setting: Disconnect all other Bluetooth connections - CarPlay needs exclusive access
4. Factory Reset Z-Link: Find the pink 'RESET' app, restart, reconnect Bluetooth, then try Z-Link
5. Sound Issues: Switch audio source to 'AUX' or 'USB/AUX' in your vehicle menu
Most issues are resolved with step 1 or 3!
The processor differs between models: The 2/32GB has a 4-Core processor, while 4/64GB and 8/128GB models feature the powerful 8-Core Cortex-A55 processor. Combined with RAM differences: The 2/32GB model with its 4-Core processor and limited RAM may experience slowdowns with heavy multitasking. The 4/64GB with 8-Core provides smooth performance for most users - no lag, seamless app switching, and enough storage for maps and music. The 8/128GB with 8-Core offers maximum performance with its generous RAM allowing unlimited multitasking and massive storage for extensive media libraries. Think of RAM like your desk space - more RAM means you can have more apps open simultaneously without slowing down.
Absolutely normal! These head units are complete replacement systems with their own GPS antenna, microphone, and Bluetooth module. Your factory connectors for these features won't be needed anymore. The important connections are: main power harness, speaker outputs, and the yellow RCA cable (even if not using a camera - it extends Bluetooth range). Any leftover factory plugs can be safely tucked away. If you're unsure about any connection, our support team is here 7 days a week.
Z-Link updates are handled through system firmware updates. Go to Settings → System → System Update. If an update is available, download it to a USB drive (FAT32 format) and install. Important: Never download Z-Link APKs from unofficial sources - they won't work and may cause issues. If you're having compatibility issues with newer iOS versions, the disable/enable workaround (Settings → Apps → Z-Link) usually resolves them while waiting for official updates.
Consider your usage:
• 2/32GB (4-Core): Budget option - fine for basic use, but may lag with multiple apps due to 4-Core processor and limited RAM
• 4/64GB (8-Core): Sweet spot - smooth Android Auto/CarPlay, multitasking, and ample storage
• 8/128GB (8-Core): Premium choice - unlimited multitasking, massive storage, future-proof for years
Most customers choose 4/64GB for the perfect balance of performance and value. The extra RAM makes a huge difference in daily smoothness!
The yellow RCA cable's blue antenna wires also boost WiFi signal! Make sure this cable is connected. Additionally, try these tips: Position the blue antenna wires away from metal surfaces, check that your phone's hotspot is set to 2.4GHz (not 5GHz) for better range, and ensure the head unit's WiFi sleep policy is set to 'Never' in Settings → WiFi → Advanced. For best performance with wireless CarPlay, keep your phone within 1-2 meters of the head unit.
Go to Settings → Sound → Equalizer and adjust to your preference. For more volume, increase the 'Loudness' setting. The 4/64GB and 8/128GB models have superior audio chips that provide cleaner, louder sound. If you have an amplifier, use the RCA outputs for best quality. Also check Settings → Factory Settings (password usually 126) → Audio settings for additional gain controls. Remember: higher-spec models (4GB+) include premium audio components for noticeably better sound.
Yes! Most vehicles work instantly. If not, use the steering wheel learning app: tap the steering wheel icon, press each button on your wheel, and assign functions. For newer vehicles with CANbus, we provide CANbus modules for automatic setup. Some vehicles may need the Key1/Key2 wires connected (usually included in our harness). If you're having trouble, let us know your exact vehicle model and we'll provide specific instructions.
We offer a 30-day return policy. If it doesn't fit or there's a compatibility issue, we'll work with you to resolve it. If you change your mind, a 20% restocking fee applies. Our team verifies compatibility before shipping to minimize issues. We provide installation support 7 days a week to help resolve any problems. With our 3-year warranty and Australian-based support, you can purchase with confidence. Full details in our Refund Policy.
Historical Evolution of the Kia Optima:
1. First Generation (2000–2005):
The Kia Optima debuted as the Magentis in Europe and Canada, while its domestic Korean name remained the Kia Lotze. Derived from the Hyundai Sonata platform, initial models emphasized practicality, affordability, and approachable comfort. Customers valued them for their reliability, roomy cabins, and commendable ride quality, establishing Kia as a credible choice in the competitive midsize segment.
2. Second Generation (2005–2010):
In its second iteration, the Optima advanced considerably in sophistication and refinement. Aesthetic improvements featured sleeker contours and distinctive body lines. Enhanced interior materials and improved mechanical refinement boosted the Optima’s reputation. Attention shifted toward improved road handling, courtesy of refined suspension systems, upgraded engines, and overall improved driving dynamics. This generation notably amplified Kia’s standing significantly on a global scale.
3. Third Generation (2010–2015):
A pivotal period for the Kia Optima occurred during its third generation, undergoing a remarkable transformation under Peter Schreyer's acclaimed design direction—a milestone marked by bold styling and markedly improved quality standards. Receiving acclaim internationally, the Optima won fans with its distinctively elegant yet energetic appearance, sharper handling, and upgraded interiors featuring purposeful ergonomics, exceptional comfort, and advanced convenience features. Thus, Kia cemented its presence globally, with elevated market reputation and consumer confidence.
4. Fourth Generation (2015–2020):
The fourth-generation Kia Optima brought subtle yet substantial evolutions, both externally and internally. Externally characterized by a gracefully evolved "Tiger-nose" grille, smoother contours, sophisticated headlamp designs, and stylish proportions, it maintained its previous expressive design language, further elevating aesthetic maturity. Internally, Kia notably prioritized refinement, blending luxurious materials, meticulous ergonomics, advanced technological equipment, and improved overall comfort and spaciousness.
This fourth-generation Optima featured robust engine options, including dependable 2.4-liter naturally aspirated, more powerful turbocharged variants, and even eco-oriented hybrid and plug-in hybrid models, balancing efficiency and spirited driving performance effectively.
Infotainment and technology also prominently advanced in this era. Kia’s proprietary infotainment interface, integrated user-friendly touchscreen displays and provided increased connectivity. However, early trims occasionally offered limited smartphone integration capabilities or lacked wireless functionality, signifying room for after-market solutions to optimize and update in-cabin connectivity.
Enhanced In-Car Connectivity and Practical Innovation:
Drivers seeking expanded usability frequently opt for tailored infotainment upgrades. Brummstadt provides a fitting example with their advanced infotainment head unit explicitly compatible with the 2015–2020 Kia Optima models. Purposefully designed to integrate harmoniously within the Optima’s dashboard aesthetics and electronic environment, this premium system notably modernizes the cabin, fostering deeper interactions between driver and vehicle.
This enhanced head unit introduces wireless and wired compatibility with both Apple CarPlay and Android Auto, bridging smartphone and vehicle effortlessly. Picture a relaxed evening dining out—after a satisfying meal shared comfortably with family, destination coordinates for the remainder of the evening effortlessly synchronize wirelessly from the smartphone directly onto the head unit’s screen through Apple CarPlay or Android Auto connectivity. This scenario smoothly transitions from family dining to arriving at friends’ homes, facilitated efficiently by familiar navigation apps such as Google Maps, Apple Maps, or WAZE, adding noticeable value through genuine convenience and peace-of-mind navigation.
Additional functionalities include optional 1080p premium HD cameras installed front and rear, providing camera recording capabilities beneficial for lasting video evidence and improved situational awareness, especially important for busy urban environments or tight parking scenarios.
The Brummstadt unit also extends the Optima’s entertainment potential significantly. Connecting gaming controllers conveniently via USB allows passengers to enjoy interactive multiplayer experiences on long drives, transforming mundane transit into joyful shared moments.
Moreover, integration of reliable smart voice controls through Apple Siri or Google Assistant manages communication, media selection, and navigation effortlessly. Beyond conventional in-car operations, these controls effortlessly interact with compatible home-smart devices—such as remotely activating porch lights before arriving home—integrating vehicle-bound technology meaningfully into everyday home life, safely and intuitively.
Advantageous Qualities of the Kia Optima Driving Experience:
The 2015–2020 Kia Optima models distinguish themselves through commendable ride comfort, balanced driving dynamics, carefully refined interiors, and appreciable build quality. Kia meticulously addresses occupant comfort, making journeys relaxing and notably quiet. Excellent road isolation, supportive seats, thoughtfully arranged cabin controls, and technological evolution elevates daily driving into a pleasant and genuinely enjoyable event.
Providing an infotainment system more sophisticated than Kia’s original factory provisioning not only advances technology in parallel with current driver expectations but also contributes substantive convenience and engagement. Choosing a reputable solution such as the Brummstadt head unit embraces these advances, thoughtfully raising practical usability, passenger entertainment, safety consciousness, connected convenience, and general satisfaction within every drive.
In recognizing the comprehensive strengths of Kia Optima fourth-generation models and appropriately refining connectivity and entertainment capabilities, owners meaningfully deepen their relationship with their vehicles. The resultant emotional connection transcends routine transport—it cultivates personal enjoyment, genuine pride, and confident, thoroughly rewarding driving satisfaction.