2017-2022 Genesis G90 Audio System: Amplifier & Head Unit Guide
Diagnosing issues with the Lexicon premium sound system, from amplifier failures and head unit glitches to understanding replacement and programming needs.
- The most common audio issues are amplifier failure (causing no sound or distortion) and head unit software glitches (causing freezing or connectivity problems).
- Replacing the head unit (radio/navigation screen) will likely require programming by a Genesis dealer to ensure it works correctly with the vehicle.
- When buying a used component, you must match the OEM part number exactly to ensure compatibility.
- Before replacing parts for software-related issues like freezing, try a system reset by holding the MAP and SETUP buttons for 10 seconds.
Symptoms of Audio System Failure
Diagnosing an audio system problem in the Genesis G90 requires paying attention to specific symptoms, as different components can cause different issues. Failures often stem from the amplifier, the head unit, or the speakers themselves.
Common Failure Symptoms:
- No Sound From Speakers: If the head unit appears to be working correctly (screen is on, you can change stations) but there is no audio output from any speaker, the amplifier is the most likely culprit. This can be caused by an internal failure of the amplifier 🎬 Watch: How to test for common amplifier failure symptoms or a blown fuse for the amp circuit.
- Distorted or Crackling Sound: Sound that is fuzzy, distorted, or crackles, especially at higher volumes, can point to a failing amplifier or a blown speaker. If the distortion is present on all speakers, the issue is likely the amplifier. If it's isolated to one speaker, that specific speaker has likely failed.
- Intermittent Audio Cut-Outs: Audio that cuts in and out can be caused by a faulty amplifier, loose wiring connections to the amp or speakers, or a software glitch in the head unit. Some owners have reported the radio randomly stopping for extended periods.
- Infotainment System Freezing or Unresponsive: If the main display screen freezes, lags, or doesn't respond to touch inputs, the problem lies within the head unit itself. This is often a software-related issue that may require a system reset or a software update.
- Bluetooth or Smartphone Connectivity Issues: Difficulty pairing a phone, frequent disconnections, or problems with Apple CarPlay and Android Auto are typically head unit software problems.
- CD Player Malfunctions: For 2017-2019 models, the CD player is located in the glove compartment. Issues like not ejecting or reading discs are specific to this module.
Pro Tip: Before assuming a major component has failed, try a simple system reset. For many Genesis models, you can perform a soft reboot by pressing a pinhole reset button (often near the volume knob) or by pressing and holding the MAP and SETUP buttons simultaneously for about 10 seconds until the screen reboots. This can often resolve temporary software glitches causing unresponsiveness or connectivity problems.
Known Issues, TSBs, and Recalls
While there are no widespread audio-specific recalls for the 2017-2022 G90, it's important to be aware of related issues.
- NHTSA Recall 24V-191: This safety recall affects 2017-2022 G90 models equipped with the 3.3L V6 turbocharged engine. The left turbocharger oil feed pipe may deteriorate and leak oil, which could increase the risk of an engine fire. While not an audio system issue, it is a critical safety recall for these vehicles that owners should be aware of.
- Software Glitches: Many reported problems with the infotainment system are software-based. Genesis has issued service campaigns for newer models to update Audio-Video-Navigation (AVN) software, indicating a history of resolving such issues through software patches. It's always worth checking with a dealer to see if any software updates are available for your vehicle.
Buying a Used Audio System
Purchasing a used audio component like a head unit or amplifier can be a cost-effective solution, but careful verification is crucial to ensure compatibility and functionality.
Key Considerations:
- Part Number Matching: This is the most critical step. Ensure the part number on the replacement unit exactly matches the one you are removing. Different part numbers may exist for different model years, trim levels (e.g., 3.3L vs 5.0L), or feature sets. Do not rely on visual similarity alone.
- Programming Requirements: Be prepared for potential programming needs, especially for the head unit (radio/navigation receiver). Multiple sources indicate that a replacement head unit may require dealer programming to function correctly with the vehicle's other systems. This is likely a security and integration measure. An amplifier replacement is less likely to require programming but it cannot be entirely ruled out.
- Physical Inspection: When buying a used amplifier, inspect the casing for any signs of water damage, corrosion on the connectors, or physical damage. These are red flags indicating potential internal failure. For a head unit, check the screen for delamination or deep scratches and ensure all buttons have a solid, tactile feel.
- Source and Warranty: Purchase from a reputable seller that offers a warranty. This provides protection in case the unit is dead on arrival or fails shortly after installation. Ask the seller about the donor vehicle's history if possible.
Warning: A used head unit from another vehicle may be electronically locked or may not integrate with your car's specific features without being programmed by a Genesis dealer. Factor the potential cost of a dealer visit into the total price of the repair.
Cost Breakdown
The cost to replace audio components on a G90 can vary significantly based on the part, whether you choose new or used, and labor rates.
| Component | New OEM Price | Used OEM Price | Shop Labor Cost |
|---|---|---|---|
| Lexicon Amplifier | $1,300 - $1,900 | $300 - $600 | $150 - $250 |
| Head Unit / Receiver | $1,900+ (estimate) | $400 - $850 | $200 - $400 |
Frequently Asked Questions (FAQ)
Does a replacement audio amplifier or head unit need to be programmed?
A replacement head unit (the main screen and radio module) will very likely need to be programmed by a Genesis dealer to ensure full functionality and communication with the vehicle's systems. An amplifier replacement is less likely to require programming, but it is still a possibility with a complex, networked system like the Lexicon. Always confirm with the part seller and a qualified technician.
Where is the amplifier located in the 2017-2022 Genesis G90?
The Lexicon premium sound amplifier 🎬 See a detailed review of the Lexicon sound system is typically mounted in the trunk, on the driver's side (LH) behind the quarter panel trim. Accessing it requires removing some of the trunk lining.
🎬 Watch: Easy walkthrough for replacing a faulty Genesis amplifierCan I install a used audio component myself?
Replacing the amplifier is a feasible DIY job for someone with moderate mechanical skill, as it involves removing trim panels and disconnecting electrical connectors. Replacing the head unit is more involved, requiring careful removal of dash trim to avoid damage. However, due to the likelihood of needing dealer programming, a DIY replacement of the head unit may still result in a trip to the dealership to complete the job.
Will a bad amplifier drain my car's battery?
Yes, a faulty amplifier can cause a parasitic battery drain. If the amplifier fails to shut down properly when the car is turned off, it can continue to draw power, leading to a dead battery over time. If you are experiencing battery drain issues alongside audio problems, the amplifier is a component to investigate.
Where is the CD player in my Genesis G90?
On 2017-2019 Genesis G90 models, the CD player is located inside the glove compartment. It is somewhat hidden at the top of the glove box interior.
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Technical Specifications
OEM Part Numbers: 84540-D2000 84540-D2AA0 95610D2101 96370-D2700 96560-D2770 96560-D2870 96560D2270VCS 96560D2770VCS 96564-D2000 96564D20004X 84540-D2AA0-4X 96370-D2500 96370D2500 96560-D2270-VCS 96560-D2370 96560-D2560 96370-B1600
Lexicon 7.1 Quantum Logic Surround Sound System with up to 17 speakers.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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