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 Journey of Jeep Grand Cherokee:
First Generation—ZJ (1993-1998):
The Grand Cherokee story began distinctly in 1993 with the ZJ series, quickly becoming noted for both luxury and utility. Introduced as upscale competition within the burgeoning SUV segment in North America, it combined Jeep’s proven rough-terrain credentials with new creature comforts—including advanced electrical amenities, plush interiors, and excellent noise insulation. The ZJ captivated drivers seeking serious off-road capability paired distinctly with accessible luxury, popularizing the idea of a premium yet rugged 4x4.
Second Generation—WJ (1999-2004):
The WJ generation further matured the Grand Cherokee’s appeal, significant refinements encompassing structural rigidity, ride comfort, engine power, and cabin sophistication. Enduring off-road heritage intertwined seamlessly with progressive upgrades inside the cockpit—adding robust climate control systems, genuine wood accents, and significantly improved infotainment systems of the time. Many enthusiasts today fondly remember the WJ as a reliable companion, revered for its balance of mechanical resilience, practicality, and refined cabin ambiance.
Third Generation—WK (2005-2010; 2008-2010 WK Mid-Cycle Refresh):
Released as a freshly designed platform in 2005, the WK series evolved significantly, emphasizing powertrain performance, safety advancements, and driving refinement. By integrating advanced suspension setups and offering powerful engines—like the notable V8 options alongside the familiar, trusted Jeep V6—it earned high praise. The 2008 mid-cycle refresh enriched its appeal notably, boosting interior refinement with updated cabin materials, improved infotainment connectivity, and sophistication in exterior styling cues—modernizing the front fascia and lighting design to contemporary standards. Additionally, a highlight introduced in the refreshed WK series included capable four-wheel-drive systems like Quadra-Trac II and Quadra-Drive II, maintaining its market strength among buyers needing genuine all-terrain versatility.
Fourth Generation—WK2 (2011-present; 2011-2013 WK2):
Building further from the WK legacy, Jeep introduced the thoroughly redesigned WK2 Grand Cherokee in 2011. With substantial enhancements to luxury, refinement, structural integrity, safety, ride quality, and technology, the WK2 quickly became synonymous with premium SUV experiences. Improved suspension systems—now with available air suspension—made both daily urban commuting and rugged terrains equally manageable, elevating this generation to premium international acclaim.
Jeep Grand Cherokee's Global Appeal and Naming Consistency:
Unlike many vehicles bearing different names across regions, the Grand Cherokee retained its badge universally—from North American suburban driveways to Australian outback highway exploration, to European urban adventures. Reliability, luxury, and the ideal blend of on-road refinement and off-road adeptness established global consistency and unmistakable character, making Grand Cherokee an easily recognizable and admired nameplate worldwide.
Embracing Enhanced Experiences with Modern Infotainment Integration:
Evolving automotive technology presents drivers excellent opportunities for tailored improvements on existing vehicle foundations, particularly relating to infotainment systems. Brummstadt, an Australian provider specialized in premium aftermarket head units, offers a naturally fitting candidate compatible specifically with Jeep Grand Cherokee WK models.
This modernized Brummstadt head unit effortlessly incorporates crucial contemporary connectivity expectations, including both wired and wireless Apple CarPlay and Android Auto integration. Through these interfaces, popular navigation apps—Google Maps, Waze, and Apple Maps—become directly available. Imagine a leisurely dinner evening with family: pre-setting a friend’s destination on a mobile phone ensures that the preselected route transitions conveniently to the head unit's high-definition display via Apple CarPlay or Android Auto, delivering seamless, relaxed journeys regardless of traffic or unfamiliar roads.
Brummstadt’s upgrade system further expands functionality, permitting integration of optional high-definition 1080p cameras (both front and rear) for improved safety perceptions and pragmatic recording capabilities. Additionally enhancing family enjoyment, USB ports allow devices such as gaming controllers to connect directly to the unit, transforming wait times during journeys into lively multiplayer gaming experiences, comfortably entertaining passengers of varied ages during long road trips.
Moreover, smart voice assistance technology provides intuitive, hands-free convenience, allowing drivers to remotely manage phone calls, navigation, and media effortlessly. Compatibility with voice assistants—Siri on Apple devices or Google Assistant on Android—facilitates even interaction with smart home devices; a simple command like “Hey Siri, turn on the porch lights” embodies both convenience and practicality, making home arrivals comfortable, secure, and straightforward.
Distinct Advantages of Grand Cherokee WK Models (2008-2013):
Owners of the WK generation consistently praise its robust, durable powertrains, comfortable ride quality, generous cabin space, and the refined design balance between luxury and practicality for families and adventure seekers alike. Jeep’s intentional inclusion of advanced safety systems, quality materials, and sophisticated styling provides lasting appreciation, resonating years after initial ownership.
Notable off-road capabilities, powerful, reliable engines capable of towing significant loads, and intentionally comfortable cabin designs mark this generation as ideal choices for broad-ranging activities—including long-distance road travel, daily commuting, or weekend trail exploration. Complementing these built-in benefits, carefully chosen aftermarket technologies and accessories significantly heighten overall usability, convenience, and enjoyment during every driving opportunity—maximizing Grand Cherokee’s strong foundational strengths.
Ultimately, Jeep Grand Cherokee WK models (2008-2013) continue showcasing distinguished heritage of sophisticated design and rugged practical talent, playing impressively diverse, versatile roles across their ownership lifecycle. Indisputably, thoughtfully integrated aftermarket products like Brummstadt’s head unit noticeably amplify daily convenience, enjoyment, practicality, and satisfaction—underlining the deeper connection between driver and vehicle which distinguished these exceptional SUVs throughout automotive history.