This premium head unit upgrade kit is designed for seamless integration with several Audi models across the B6 and B7 generations, providing a modern infotainment experience with both wired and wireless Apple CarPlay and Android Auto compatibility. The following models are compatible with this head unit:
- Audi A4 B6 (8E/8H): 2000-2006
- Audi A4 B7 (8E/8H): 2004-2008
- Audi S4 B6 (8E/8H): 2003-2005
- Audi S4 B7 (8E/8H): 2005-2008
- Audi RS4: 2002-2008 (including RS4 B7 (8E): 2006-2008)
- SEAT Exeo: 2008-2012 (rebadged version of the Audi A4 B7)
These models share a similar radio and infotainment architecture, making this upgrade kit a perfect solution for enhancing your in-car experience. Enjoy a smoother and more connected drive with modern features like hands-free calling, voice control, navigation, and easy access to your favorite apps. Upgrade your vehicle's technology today with this comprehensive solution, custom-built to match the design and functionality of your Audi's interior.
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 Audi A4/S4/RS4 B6 & B7 and SEAT Exeo:
Audi A4 B6 (2000–2005):
Debuting in 2000, the Audi B6 generation brought subtle yet meaningful advancement from its predecessor, moving towards smoother, more sophisticated styling while upholding Audi’s signature understated elegance. Known for structural rigidity, precise handling, and high-quality cabin materials, the B6 firmly cemented Audi's reputation for meticulous craftsmanship. Particularly cherished were the turbocharged petrol and efficient diesel variants alongside the Quattro all-wheel-drive system. Meanwhile, the sporting flagship S4 variant introduced the naturally aspirated 4.2-liter V8 engine for the first time, delivering a compelling 344 horsepower, making a long-standing impact among performance-oriented drivers and elevating the series’ desirability.
Audi A4 B7 (2004–2008):
Evolution rather than revolution defined the A4 B7 generation, sharing its structure and platform with its B6 predecessor but featuring distinct improvements in style and engineering. The exterior showcased sharper headlamps and revisions to the characteristic single-frame grille, giving a refreshed modern appearance. Crucially, the B7 intensified focus on dynamic refinement by optimizing ride quality, handling prowess, and technology. Powertrain efficiency improved substantially, including notable enhancements to Audi’s famed direct-injection turbocharged petrol engines (TFSI) and performance-inspired diesel (TDI) units.
Complementing the family were sport-focused editions—chiefly the S4, refining the B6’s well-received V8 with improved responsiveness, and the powerful RS4. The RS4 B7 particularly excelled in capturing hearts and minds, delivering exhilarating performance courtesy of a high-revving 4.2-liter V8 engine pushing 420 horsepower. With sport-tuned Quattro drivetrain, aggressive styling cues like widened wheel arches, larger wheels, and distinct exhaust notes, the RS4 swiftly became an automotive icon synonymous with passion and engineering precision.
SEAT Exeo (2008–2012):
Uniquely, when Audi ceased B7 production, Volkswagen Group intriguingly passed the highly reputable A4 architecture to their Spanish marque, SEAT, resulting in the SEAT Exeo. Essentially a re-engineered A4 B7, the Exeo provided Volkswagen’s Spanish division a luxury-oriented sedan and sport wagon segment entrant from 2008 to 2012. Adapting Audi’s proven core elements, the Exeo refined components such as suspension tuning for a beneficially dynamic yet comfortable driving manner beneath an upscale interior finish. Often regarded as offering premium experience at accessible pricing, the SEAT Exeo developed notoriety and respect in the European market, particularly praised for value, performance consistency, and elegant design features.
Enhanced Infotainment with Brummstadt Head Unit Integration:
While visually and structurally reputable vehicles, these Audi B6/B7 and SEAT Exeo models now lag behind contemporary technological advancements. Recognizing this, the market, including specialized purveyors like Brummstadt (https://www.brummstadt.com.au/), offer precisely matched premium head unit upgrades, carefully designed to integrate without disturbing dashboard aesthetics or controls, effectively blending modern convenience with original interior integrity.
Significant within these head unit offerings is comprehensive wired and wireless compatibility with Apple CarPlay and Android Auto. This modern integration lets users effortlessly access and interact with smartphone functionality directly through their dashboard screen. Beyond default apps, systems seamlessly support preferred third-party navigation software like Google Maps and WAZE, providing clear, intuitive routes and real-time traffic information.
Picture an evening where friends or family share dinner at a restaurant; midway, the decision arises spontaneously to visit companions elsewhere in town. Simply inputting the chosen address on a smartphone seamlessly transfers driving directions onto the infotainment screen through wireless Apple CarPlay or Android Auto, significantly simplifying navigation during nighttime or unfamiliar territory, enabling stress-free transition towards spontaneous plans.
Another measured enhancement these aftermarket head units provide is an optional video upgrade, adding high-definition 1080p front and rear cameras with digital recording capabilities. This additional visibility ensures heightened driver awareness, aiding critical parking maneuvers in tight urban spaces or busy streets and providing valuable video documentation for enhanced driver confidence.
Moreover, modern infotainment systems offer entertainment possibilities extending well beyond basic audio streaming. Passengers can directly connect gaming controllers via USB ports, enjoying interactive multiplayer gaming experiences displayed clearly on screen—transforming long drives into engaging and enjoyable shared memories rather than idle intervals.
Additionally, integrated voice-recognition systems available in these upgraded head units support convenient, hands-free control over navigation, communication, and multimedia playback, extending compatibility further with widely utilized smart home technologies. Imagine approaching home late in the evening, audibly instructing Siri or Google Assistant through the car's speaker system to illuminate porch lights before arrival—a subtle yet compelling display of technology easing everyday life scenarios, increasing travel convenience, internalizing convenience and safety inherently in modern driving.
Driving Experience Benefits—Audi & SEAT:
Across Audi’s B6 and B7 generations and extending to SEAT’s Exeo, vehicles have achieved distinguished reputations for excellence in performance, sophisticated refinement, driver orientation, and engineering integrity. Both everyday users and sporting-minded drivers praise these vehicles for reliability, comfort, stylish grace, handling precision, powerful engines (petrol and diesel), and impressive interior quality standards still evident today.
These models remain desirable choices long after production ceased due to cohesive automotive attributes, thoughtful design innovation, balanced dynamics, and inherent suitability across urban and highway commutes. These thoughtful infotainment systems effectively modernize an already respected automotive lineup’s technology infrastructure, improving day-to-day interaction, compatibility with contemporary devices, safety, entertainment diversity, and user-friendly integration into current consumer expectations.
The collective sum of these upgrades helps transform beloved models such as the Audi A4, S4, RS4 B6/B7, and SEAT Exeo into vehicles embodying the concept of continuous refinement, precise engineering, driving pleasure, and connected technological progress—emphasizing how technological integration plays a straightforward yet meaningful role in celebrating and preserving the automotive heritage and performance quality inherent to these well-admired models.