2015-2017 Acura TLX Audio Control Module: Symptoms, Compatibility, and Replacement
This guide covers the common issues, part number specifics, and replacement considerations for the audio control module in the first-generation Acura TLX.
- This module (part # 39800-TZ3-A01) is ONLY for 2015-2017 TLX models WITHOUT factory navigation.
- Many common audio/visual issues, like "ghost touch," are caused by the screen, not this module.
- Replacement units require an anti-theft code to function, which can be retrieved from Acura with the VIN.
- Symptoms like no sound, popping noises, or system freezes are strong indicators of a failing module.
Symptoms of a Failing Audio Control Module
A faulty audio control module in a 2015-2017 Acura TLX can cause a range of issues, from minor annoyances to a completely non-functional audio system. Identifying the correct cause is key, as some symptoms may overlap with other problems, like a bad amplifier or screen issue.
Common Failure Symptoms:
- No Sound from Any Source: The most common symptom is a complete lack of audio. The display may appear to function normally, allowing you to change stations or select sources, but no sound comes from the speakers.
- Intermittent Audio Cutout: Sound may work sporadically, cutting in and out without warning. This can sometimes be related to temperature changes or road vibrations.
- Popping or Crackling Noises: Loud, unpleasant popping or crackling sounds may come from the speakers, even when the volume is low or muted. This can point to an internal failure in the module or a related wiring issue.
- System Freezing or Unresponsive: The infotainment system may freeze, become slow to respond to inputs, or fail to boot up entirely.
- Bluetooth Connectivity Issues: Problems pairing a phone or maintaining a Bluetooth connection can sometimes be traced back to the audio module.
- Some Audio Sources Work, Others Don't: You might find that the FM radio works, but Bluetooth or satellite radio does not, indicating a partial failure within the unit.
Pro Tip: Before assuming the audio module is bad, check the simple things first. A blown fuse is a common cause of a dead radio. Check the fuse labeled "Audio Amp" or similar in the vehicle's fuse panels. Also, a weak or failing car battery can cause a variety of strange electronic issues.
Known Issues, TSBs, and Recalls
While there are no specific recalls for the audio control module itself on the 2015-2017 TLX, owners have reported several related issues.
"Ghost Touch" on Display Screen
Many TLX owners experience "ghost touch," where the touchscreen registers inputs that were never made. This can cause the radio station to change, menus to open randomly, or navigation to activate on its own. It's crucial to understand that this is typically NOT a failure of the audio control module. This problem is almost always caused by a failing resistive digitizer (the touch-sensitive layer) on the screen itself, which degrades over time due to heat and humidity. Replacing the entire audio unit will not solve this problem; the screen's digitizer needs to be replaced.
Popping/Crackling Speakers (TSB 21-032)
For later model TLXs, Acura issued Technical Service Bulletin (TSB) 21-032 for popping or crackling sounds, a blank display, or no audio. The cause was identified as a loose connection in the MOST bus network, fixed by installing a FAKRA connector set. While this TSB applies to 2021 models, the symptoms are very similar to those reported on 2015-2017 models, suggesting that checking for loose connections behind the unit is a valid diagnostic step.
Buying a Used Audio Control Module
Purchasing a used OEM audio module is a cost-effective way to restore your sound system. However, careful attention to detail is required to ensure you get the right part that will work in your vehicle.
Warning: This module is for vehicles WITHOUT the factory navigation system. The part number must match your original unit exactly. Using a module from a navigation-equipped car will not work.
Compatibility Check:
- Verify the Part Number: The most critical step is to match the part number. The primary OEM part number for this unit is 39800-TZ3-A01. Always confirm the part number on your original unit before purchasing a replacement.
- No Navigation: Double-check that both your vehicle and the donor vehicle for the used part are non-navigation models. The wiring and software are different.
Programming and Anti-Theft
After installation, the audio unit may display a "CODE" message on the screen. This is an anti-theft feature. You will need to retrieve your vehicle's specific radio code and enter it to unlock the unit. You can typically find this code on a sticker in your glove box or retrieve it from an Acura dealer or Acura's official website with your vehicle's VIN and the radio's serial number. In most cases for a like-for-like swap, dealer reprogramming for the VIN is not required, but the anti-theft code is mandatory.
Cost of Replacement
Replacing the audio control module can have a wide range of costs depending on the path you choose.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $230 - $350 |
| Used OEM | $40 - $210 |
| Shop Labor for Installation | $150 - $300 |
Frequently Asked Questions (FAQ)
Do I need to take my car to the dealer to program a replacement audio module?
Generally, no. If you are replacing a failed unit with a used one of the exact same part number (39800-TZ3-A01), it should be plug-and-play after you enter the radio's anti-theft code. The unit is not typically tied to the vehicle's VIN in a way that prevents basic audio functionality.
My screen is randomly pressing buttons on its own. Is this a bad audio module?
Almost certainly not. This issue, known as "ghost touch," is a very common problem with the touchscreen digitizer itself, not the audio module computer. Replacing the audio module will not fix this. The screen's touch layer needs to be repaired or replaced.
How do I find my radio's anti-theft code?
First, check for a small sticker with a 5-digit code inside your glove box or on its side. If it's not there, you can retrieve the code online from the official Acura radio code website by entering your VIN and the radio's serial number. You can get the serial number by pressing and holding radio preset buttons 1 and 6 while turning the radio on.
Can a bad audio module drain my car battery?
Yes, it's possible. An internal short or a failure where the module does not fully shut down when the car is off can create a parasitic draw on the battery, causing it to drain overnight.
Technical Specifications
OEM Part Numbers: 39800-TZ3-A01 39800TZ3A01
Fits 2015, 2016, and 2017 Acura TLX Base and SH-AWD models without the factory navigation system.
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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.
- Acura TLX:
- 🛍️ Shop This Part
- Symptoms of a Failing Audio Control Module
- Common Failure Symptoms:
- Known Issues, TSBs, and Recalls
- "Ghost Touch" on Display Screen
- Popping/Crackling Speakers (TSB 21-032)
- Buying a Used Audio Control Module
- Compatibility Check:
- Programming and Anti-Theft
- Cost of Replacement
- Frequently Asked Questions (FAQ)
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