UAX Troubleshooting guide

UAX Troubleshooting guide

๐Ÿ“˜ UAX Radio Troubleshooting Guide

For Infotainment.com Upgrade Kit Users

This guide will help you quickly diagnose and resolve issues related to your upgraded UAX infotainment system. It includes hardware port references, how to access diagnostic mode, and a step-by-step troubleshooting checklist.

๐Ÿ“ฆ Parts List

  • UAX Radio Module (C-UAX-21DT or C-UAX-DT)

  • Replacement Instrument Panel (C-PANUAX-DT)

  • High Gloss Radio Bezel with 12" Screen (C-BEZUAX-DT)

  • UAX Harness (C-INTDISP-DT)

  • LVDS Video Cable (C-INTLVDS-PAN)

  • Antenna Conversion Cable (U-INTC2K)*

  • Clip Nuts & Screws (C-NUT & C-SRW)

  • Rubber Pad Replacement (C-PADUAX)

  • Genie Programmer (C-UAX)

  • Security Gateway Module Bypass (C-MODBYP)
    *Included only if required by vehicle.

๐Ÿ”Œ Module Connection Reference (Rear View)

Ensure all ports on the UAX radio are correctly connected:

Port ColorFunctionNotes
PurpleWiFi / Phone AntennaCritical for wireless CarPlay/Android Auto and hotspot.
WhiteAM/FM AntennaEnables terrestrial radio reception.
YellowSiriusXM & GPS AntennaDual-use port; needed for nav and satellite radio.
PinkNot used (International market only)Leave disconnected (non-functional in U.S. setups).
RedDiagnosticsNo user-accessible function.
GrayMicro USB PortRarely used; may support service access.
Black (52-pin)Power & All Signal I/OMain harness. Must be fully seated and locked.



๐Ÿ“Œ Things to Know (Before or After Installation)

These systems are pre-programmed by Infotainment.com to function seamlessly with your specific vehicle configuration. Here are a few key things to be aware of:

โœ… Factory Feature Compatibility

  • Steering Wheel Audio Controls:
    Fully supported without additional programming.

  • SiriusXM Satellite Radio:
    Pre-configured for use.

    • If your vehicle did not come with SiriusXM from the factory, we include an antenna adapter (U-INTC2K).

    • This plugs into the mustard/curry-colored Fakra connector on the UAX module.

    • โš ๏ธ However, your roof-mounted antenna must be replaced with our Factory SiriusXM Antenna (sold separately) to receive signal.

  • Rear Backup Camera / 360 Camera:

    • Standard rear camera supported.

    • Also compatible with 360ยฐ camera systems (if equipped).

  • UConnectยฎ Bluetooth Hands-Free Calling:

    • Fully functional through the existing factory mic system.

โš ๏ธ Limitations & Add-ons

  • Sirius Guardianยฎ & 4G LTE Hotspot:

    • These services will not be available after upgrade.

    • They require factory-embedded telematics hardware and subscriptions that are not included or supported.

  • Automatic Climate Control Support:

    • This kit supports trucks with or without factory auto climate controls.

    • To add automatic climate functionality, consider the Plug & Play Auto Climate Control Kit (sold separately).

๐Ÿ”ง Step-by-Step Installation

Step 1โ€“2: Remove Existing Components

  1. Remove tray cover to access two T20 screws.

  2. Pull bezel/radio forward carefully and disconnect all connections (up to 9).

โš ๏ธ Donโ€™t yank the bezel; all connectors have locking tabs.

Step 3โ€“6: Remove Factory Module

  1. Disconnect harnesses and take photos for reference.

  2. For 52-pin connector, pull locking lever up before removing.

  3. Remove factory radio (UAV or all-in-one) using four T10 screws.

  4. Disconnect all rear connections; set old module aside.

Step 7โ€“9: Install New UAX Module

  1. Install UAX module as per original mounting location.

  2. Use supplied clip nuts and T10 screws (if previous radio was all-in-one).

  3. Mount securely with screws.

Step 10โ€“12: Transfer Controls & Wire

  1. Place bezel/screen face-down. Remove lower HVAC controls (T15 screws + clips).

  2. Transfer HVAC controls to new replacement panel.

  3. Use UAX harness and LVDS cable to make connections to the screen.

โš ๏ธ Only two harness ends are needed; others may not be used.

Step 13โ€“15: Reassemble Dashboard

  1. Reconnect 12v power outlet before final placement.

  2. Push bezel/screen into dash until clips snap into place.

  3. Reinstall two T20 screws.

Step 16โ€“18: Program & Finalize

  1. Reinstall the rubber tray mat.

  2. Install Security Gateway Module Bypass (C-MODBYP).

  1. Use Genie Programmer:

  • Turn vehicle to RUN.

  • Wait 1 minute, then plug in the Genie.

  • Flashing blue = programming.

  • Solid green = success (1โ€“3 mins).

  • Unplug Genie, allow a sleep cycle, then test system.

๐Ÿ› ๏ธ Troubleshooting Checklist

โš ๏ธ 1. Screen Does Not Power On

  • โœ… Ensure 52-pin connector is fully seated and locked.

  • โœ… Check vehicle fuses (infotainment-related; see ownerโ€™s manual).

  • โœ… Perform a CAN-bus reset:

    • Disconnect negative battery terminal(s).

    • Wait 15โ€“20 minutes.

    • Reconnect and restart system.

โš ๏ธ 2. Features Missing After Install

Some features take time to fully initialize.

  • โณ Wait up to 48 cumulative hours (requires vehicle to enter deep sleep cycles).

  • Features that may delay:

    • Heated/cooled seat icons

    • Splash screen

    • SiriusXM activation

    • Drive Modes / Themes

    • Backup camera

โš ๏ธ 3. No Sound

  • ๐Ÿ”Œ Verify speaker wiring via the 52-pin connector.

  • ๐Ÿ”Š If your vehicle has a factory amp (e.g., Alpine or Harmon Kardon):

    • Confirm amp is powered and receiving signal.

  • ๐Ÿ” Perform a CAN-bus reset if no sound.

โš ๏ธ 4. CarPlay / Android Auto Not Working

  • ๐Ÿ”Œ Use an OEM or certified USB cable.

  • ๐Ÿ” Restart both your phone and the vehicle.

  • ๐Ÿ”ง Confirm new USB hub was installed (if included in your kit).

  • ๐Ÿ’ก Secure USB hub harness connection.

๐Ÿ“„ Apple CarPlay Help
๐Ÿ“„ Android Auto Help

โš ๏ธ 5. HVAC Controls Missing or Frozen

  • ๐Ÿ”Œ Ensure HVAC control harness is connected properly (especially with upgraded bezels).

  • โณ Wait up to 48 hours or perform CAN-bus reset.

โš ๏ธ 6. Backup Camera Not Working

  • ๐Ÿ”ง Ensure camera wiring routes correctly into 52-pin connector (refer to wiring diagram if needed).

  • โณ Wait 48 hours if wiring is confirmed.

  • ๐Ÿงช Use an external camera tester to verify signal integrity.

โš ๏ธ 7. Steering Wheel Controls Not Working

  • ๐Ÿ”Œ Inspect CAN signal wires in the 52-pin connector for pin damage or misalignment.

  • ๐Ÿ” Perform a CAN-bus reset to reinitialize signal mapping.

โš ๏ธ 8. Weak Bluetooth Signal / Call Clarity Issues

If your UAX or UAV system has weak Bluetooth reception, or if:

  • Your phone is struggling to stay connected, and

  • Call audio is poor or one-sided for the person you're calling...

๐Ÿ”ง You likely need to install a Vehicle phone override cable 

โœ… Solution: Install a Vehicle phone override cable  

  • Locate the green Fakra connector on the rear of the radio.

    • This port supports Bluetooth and WiFi antenna input.

  • Customers using this upgrade may not have a factory Bluetooth antenna โ€” thatโ€™s okay.

  • Instead, install the Vehicle phone override cable to improve performance.

๐Ÿ“Ž Cable Details:

  • Plugs into the green Fakra on the rear of the radio.

  • Must be neutral keyed (typically gray or teal).

  • Designed to resolve:

    • Weak or spotty Bluetooth connectivity

    • Poor or unclear phone call audio

    • Trouble pairing with smartphones


๐Ÿ’ฝ UAX Software Updates

Keeping your Uconnect 4 UAX radio up to date is important for performance, stability, and feature reliability. FCA software updates can be specific to your vehicle's make and model, so carefully follow the guidance below.

โš ๏ธ Software Update Notes

  • These updates are official Uconnect releases and have not been altered.

  • Install at your own risk: If an update fails, a white screen with an ERROR code (e.g., ERROR 20) may appear.

    • This usually means an internal component in the radio failed to update.

  • The radio is designed with a recovery mode. If an update fails, it should automatically roll back to the previous version. This may take 10โ€“30 minutes.

  • If the radio fails to enter or complete recovery mode, the unit may need repair or replacement.

  • โš ๏ธ If the radio stays powered on after a failed update (even with vehicle off), pull the fuse to avoid draining your battery.

๐Ÿ”Œ Fuse Locations (in case of software failure)

RAM 1500 DT

  • Interior Fuse Box behind driver-side kick panel

  • Fuse F44 โ€” 20 AMP Yellow Micro Fuse

RAM HD (2500/3500/4500/etc.)

  • Located beneath the engine bay fuse box

  • Inside a rubber capsule hidden among harnesses

  • Also a 20 AMP yellow micro fuse

๐Ÿง  How to Check Your Current Software Version

  1. Hold down 3 physical buttons on your dash for 5โ€“10 seconds:

    • Driverโ€™s Side TEMP UP (Red Arrow)

    • Driverโ€™s Side TEMP DOWN (Blue Arrow)

    • FRONT DEFROST

  2. Navigate to:
    System Information โ†’ Radio Part Information

  3. Look for the application version:

    • Example: USA-IR22.6....xxxx

    • Version numbers of interest: 21.9, 22.6, 28.3, 34.2, 39.6, etc.

๐Ÿ”„ Software Update Process (Windows Only)

  1. Use a 16GB USB drive (for earlier updates, you may need more storage).

  2. Format the USB drive to FAT32:

    • Right-click โ†’ Format โ†’ Select FAT32 โ†’ Quick Format.

  3. Download the next available version above your current version.

    • You cannot install the same version or a lower one.

  4. Copy that update to the USB.

  5. Insert the USB into your vehicleโ€™s port and follow on-screen prompts.

  6. After each update, reformat the USB drive before loading the next one.

โš ๏ธ Mac users: macOS does not format to FAT32 by default. Use a third-party FAT32 formatter to prepare the USB drive correctly.

Plug in your USB drive, It's recommended to have 16GB USB drive, most of these updates are around 1GB. Right click the USB drive and click quick format, and make sure that FAT32 is selected. Proceed to reformat the USB drive each time you complete an update to load a new one on the drive (if you plan on using the same USB drive for all the updates).


20.10 (Please use at minimum a 16GB USB drive. Just double click the zipped folder to see the contents. You should see two folders called "VP4R_Update" and "Map_Package". Drop those folders onto the blank USB drive)
https://drive.google.com/file/d/1pACuG5T7ERuvnShsNHBaCTEg6VsmNwTz/view?usp=sharing


28.1 (Double click the first folder, and you should see a folder called "VP4R_Update". Drop that folder onto the blank USB drive)
https://drive.google.com/file/d/1oSTp_giRqYEfGbJrwISnVo_iqMDdP1oo/view?usp=drive_link

34.2 (Double click the first folder, and you should see a folder called "VP4R_Update". Drop that folder onto the blank USB drive)
https://drive.google.com/file/d/1C8la60nfJW-oe34lZAdU57l_QtVTCW5g/view?usp=sharing


39.9 (Double click the first folder, and you should see a folder called "VP4R_Update". Drop that folder onto the blank USB drive)

40.1 (Double click the first folder, and you should see a folder called "VP4R_Update". Drop that folder onto the blank USB drive)
https://drive.google.com/file/d/1Ujasygo2Zfd1s20EZfb3U-NoWTVnyYRr/view?usp=sharing

 

At the very end, you should be at USA-SBX-12.1-PR-40.1.0-20220821-P0J0 as the application version in the Dealer Mode "Radio Part Information".

At the 40.1 update, you can go to www.navigation.com and purchase a map update to update the maps.



If you have any questions or are unsure on how to follow this guide, please call Infotainment.com support and we can assist

Thank you for choosing infotainment.com!