Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2025HIGHLANDER XLE, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXDTC INDEX (4 OF 6)NAVIGATION / MULTI INFO DISPLAY DTCSNAVIGATION SYSTEM (FOR 12.3 INCH DISPLAY)
2025 Toyota Highlander XLE, FWD
NAVIGATION SYSTEM (for 12.3 Inch Display)
2025 Toyota Highlander XLE, FWDSECTION NAVIGATION SYSTEM (for 12.3 Inch Display)
NAVIGATION SYSTEM (FOR 12.3 INCH DISPLAY) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B1324 | Lost Communication with Meter |
| B1325 | Lost Communication with HUD |
| B153A | GVIF Disconnected (from Extension Module to H/U) |
| B1543 | Extension Module Disconnected 2 |
| B1551 | HD Radio Tuner Malfunction |
| B1556 | Extension Module Malfunction 2 |
| B1574 | GVIF Disconnected (from Park Assist/Monitoring ECU to EMV/MM Integrated Device) |
| B1575 | GVIF Disconnected (from EMV/MM Integrated Device to Multi Display) |
| B1579 | Voice Recognition Microphone Disconnected |
| B157E | Bluetooth Antenna Disconnected |
| B1585 | USB Device Malfunction |
| B158D | Video Signal Stoppage |
| B158F | AV Signal Stoppage (Low Battery Voltage) |
| B15A0 | LAN Master Malfunction |
| B15A3 | Stereo Component Amplifier Malfunction |
| B15A6 | Display Malfunction |
| B15AD | Navigation Processor Malfunction |
| B15B0 | Display Screen Malfunction |
| B15B3 | Radio Tuner Malfunction |
| B15B7 | Bluetooth Module Malfunction |
| B15BA | XM Tuner Malfunction |
| B15C0 | GPS Antenna Connection Malfunction(short) |
| B15C1 | GPS Antenna Connection Malfunction(break) |
| B15C2 | Speed Signal Malfunction |
| B15C3 | Speaker Output Short |
| B15D0 | MOST Communication Malfunction |
| B15D3 | Stereo Component Amplifier Disconnected |
| B15D6 | Display Disconnected |
| B15DB | Telematics Transceiver Disconnected |
| B15F5 | Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction |
| B15F6 | Main Body ECU Vehicle Information Reading/Writing Process Malfunction |
| B15F7 | Certification ECU Vehicle Information Reading/Writing Process Malfunction |
| B15F8 | D-Seat ECU Vehicle Information Reading/Writing Process Malfunction |
| B15FE | XM Tuner Antenna Disconnected |
| B15FF | XM Tuner Antenna Short |
| C1610 | Camera ECU Malfunction |
| U0073 | Sending Malfunction (Navigation to APGS) |
| U0100 | Engine ECU Communication |
| U0129 | VSC(ECB)ECU Communication |
| U0140 | Lost Communication with Body Control Module |
| U0155 | Meter ECU Communication |
| U0164 | Air Conditioner ECU Communication |
| U0198 | Lost Communication with Telematic Control Module |
| U023B | Lost Communication with Image Processing Module "B" |
| U0293 | HV ECU Communication |
| U1110 | Clearance Sonar ECU Communication |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.