2019-2022 Acura ILX Audio Module: A Guide to CarPlay & Infotainment Problems

Symptoms of a Failing Audio Control Module

Failure of the audio control module in the 2019-2022 Acura ILX typically manifests as problems with the Apple CarPlay and Android Auto systems. While many issues can be traced to simpler causes like cables or phone software, a faulty module can cause persistent and frustrating symptoms.

• Intermittent or Total Connection Loss: The most common symptom is Apple CarPlay or Android Auto frequently disconnecting or failing to connect at all. The screen may revert to the native Acura infotainment interface unexpectedly.
• Black or Unresponsive Screen: The infotainment screen may go completely black when CarPlay/Android Auto is selected, even though audio from the phone might still play. In other cases, the system freezes and becomes unresponsive to touch or button inputs.
• System Lag or Crashing: The infotainment system may become slow, laggy, or reboot itself randomly, particularly when using CarPlay or Android Auto.
• Phone Not Recognized: The system may fail to recognize that a phone is plugged into the USB port, or it may charge the phone without launching the CarPlay/Android Auto interface.
• Loud Popping or Crackling Sounds: While more commonly documented in other Acura models like the RDX, some owners report a loud, sudden "pop" or crackling sound from the speakers, often immediately followed by the screen going black and the system rebooting. This points to a communication error on the vehicle's media network.

Known Issues, TSBs, and Recalls

While there are no recalls specifically for the audio control module in the 2019-2022 ILX, it's important to be aware of related issues and broader vehicle recalls.

Infotainment System TSBs (for related models)

Acura has addressed similar infotainment issues in other models. Notably, Acura Service Bulletin 21-009 was released for 2019-2020 RDX vehicles experiencing symptoms like popping/crackling speakers, a blank display, and "Network Loss" messages. The cause was identified as a loose connection in the MOST bus network (the car's media data network). The fix involves installing an updated FAKRA connector set to ensure a stable connection. While this TSB is not for the ILX, the symptoms are nearly identical to some complaints, making it a valuable diagnostic clue for technicians if you experience loud popping followed by a system crash.

Vehicle-Specific Recalls

The 2019-2020 Acura ILX is part of a significant safety recall for the brake master cylinder (NHTSA Recall 25V859). Contaminated brake fluid can cause a seal to fail, reducing braking performance and increasing stopping distance. While unrelated to the audio module, it is critical for any owner or potential buyer of these model years to ensure this recall has been performed by an Acura dealer.

Buying a Used Audio Control Module

Purchasing a used OEM audio control module can be a cost-effective solution, but careful verification is essential to avoid compatibility issues.

What to Check Before You Buy:

• Match Part Numbers Exactly: The most critical step is to match the part number on your original module to the used part you are buying. Verified part numbers include 39095-TX6-A01 and 39095-TX6-A010. A part number ending in -M1, such as 39095-TX6-A010-M1, typically indicates a factory-remanufactured unit, which is also a reliable choice.
• Physical Inspection: Check the used module for any signs of physical damage, especially to the connector ports. Ensure all pins are straight and free of corrosion.
• Ask About the Donor Vehicle: If possible, find out the VIN and history of the vehicle the part came from. Avoid parts from flood-damaged or heavily wrecked vehicles, as hidden electronic damage is common.
• Understand the Risk: Since many failure symptoms are intermittent software glitches, there is a small risk that a used module could eventually develop the same problem you are trying to fix. Buying from a reputable seller with a warranty can help mitigate this risk.

Replacement Overview and Difficulty

Replacing the audio control module is a moderately difficult job that a skilled DIYer can perform.

• Installation Difficulty: 3 out of 5
• Estimated Time: 1.5 - 2.5 hours
• Tools Required: Phillips screwdriver, plastic trim removal tools.

The module is located within the center console, requiring the removal of several trim pieces around the shifter and dashboard to gain access. The process is similar to what is shown in installation videos for aftermarket systems like the GROM VLine. Once accessed, the module is typically held in by a few screws and has plug-in electrical connectors. In most cases, a used module with a matching part number should be plug-and-play without needing special programming. However, if the system does not function correctly after installation, a visit to an Acura dealer for a software check may be necessary.

Cost Comparison

Replacing the audio control module can be expensive, especially at the dealership. Buying a used OEM part offers significant savings.

Frequently Asked Questions (FAQ)