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.
2013 Lexus RX 350 Base, AWDFACTORY OEM SERVICE PROCEDURE
Navigation System
NAVIGATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B1321 | Lost Communication with EMV |
| DTC B1323 | Lost Communication with Haptic Device |
| DTC B1551 | HD Radio Tuner Malfunction [03/2012 - 07/2012] |
| DTC B1551 | HD Radio Tuner Malfunction [07/2012 - ] |
| DTC B15A0 | LAN Master Malfunction [03/2012 - 07/2012] |
| DTC B15A0 | LAN Master Malfunction [07/2012 - ] |
| DTC B15AD | Navigation Processor Malfunction [03/2012 - 07/2012] |
| DTC B15AD | Navigation Processor Malfunction [07/2012 - ] |
| DTC B15B3 | Radio Tuner Malfunction [03/2012 - 07/2012] |
| DTC B15B3 | Radio Tuner Malfunction [07/2012 - ] |
| DTC B15B5 | DVD Changer Malfunction [03/2012 - 07/2012] |
| DTC B15B5 | DVD Changer Malfunction [07/2012 - ] |
| DTC B15B7 | Bluetooth Module Malfunction [03/2012 - 07/2012] |
| DTC B15B7 | Bluetooth Module Malfunction [07/2012 - ] |
| DTC B15BA | XM Tuner Malfunction [03/2012 - 07/2012] |
| DTC B15BA | XM Tuner Malfunction [07/2012 - ] |
| DTC B15F9 | UART Communication Malfunction(for A/C) [03/2012 - 07/2012] |
| DTC B15F9 | UART Communication Malfunction(for A/C) [07/2012 - ] |
| DTC B1567 | HUD Disconnected |
| DTC B1575 | GVIF Disconnected (from EMV/MM Integrated Device to Multi Display) |
| DTC B1579 | Voice Recognition Microphone Disconnected |
| DTC B1585 | USB Device Malfunction |
| DTC B15A3 | Stereo Component Amplifier Malfunction (03/2012 - 07/2012) |
| DTC B15A3 | Stereo Component Amplifier Malfunction (07/2012 -) |
| DTC B15A6 | Display Malfunction (03/2012 - 07/2012) |
| DTC B15A6 | Display Malfunction (07/2012 -) |
| DTC B15AF | Haptic Device Malfunction (03/2012 - 07/2012) |
| DTC B15AF | Haptic Device Malfunction (07/2012 -) |
| DTC B15B0 | Display Screen Malfunction (03/2012 - 07/2012) |
| DTC B15B0 | Display Screen Malfunction (07/2012 -) |
| DTC B15B8 | Harddisk Malfunction (03/2012 - 07/2012) |
| DTC B15B8 | Harddisk Malfunction (07/2012 -) |
| DTC B15C0 | GPS Antenna Connection Malfunction(short) |
| DTC B15C1 | GPS Antenna Connection Malfunction(break) |
| DTC B15C2 | Speed Signal Malfunction (03/2012 - 07/2012) |
| DTC B15C2 | Speed Signal Malfunction (07/2012 -) |
| DTC B15C3 | Speaker Output Short |
| DTC B15D0 | MOST Communication Malfunction |
| DTC B15D3 | Stereo Component Amplifier Disconnected |
| DTC B15D5 | Rear Seat Entertainment System Disconnected |
| DTC B15D6 | Display Disconnected |
| DTC B15DB | Telematics Transceiver Disconnected |
| DTC B15E7 | Harddisk Reading/Writing Malfunction(Low Temperature) (03/2012 - 07/2012) |
| DTC B15E7 | Harddisk Reading/Writing Malfunction(Low Temperature) (07/2012 -) |
| DTC B15E8 | Harddisk Reading/Writing Malfunction(High Temperature) (03/2012 - 07/2012) |
| DTC B15E8 | Harddisk Reading/Writing Malfunction(High Temperature) (07/2012 -) |
| DTC B15F5 | A/C ECU Vehicle Information Reading/Writing Processor Malfunction (03/2012 - 07/2012) |
| DTC B15F5 | A/C ECU Vehicle Information Reading/Writing Processor Malfunction (07/2012 -) |
| DTC B15F6 | Main Body ECU Vehicle Information Reading/Writing Process Malfunction (03/2012 - 07/2012) |
| DTC B15F6 | Main Body ECU Vehicle Information Reading/Writing Process Malfunction (07/2012 -) |
| DTC B15F7 | Certification ECU Vehicle Information Reading/Writing Process Malfunction (03/2012 - 07/2012) |
| DTC B15F7 | Certification ECU Vehicle Information Reading/Writing Process Malfunction (07/2012 -) |
| DTC B15F8 | Driver Seat ECU Vehicle Information Reading/Writing Process Malfunction (03/2012 - 07/2012) |
| DTC B15F8 | Driver Seat ECU Vehicle Information Reading/Writing Process Malfunction (07/2012 -) |
| DTC B15FE | XM Tuner Antenna Disconnected; DTC B15FF: XM Tuner Antenna Short |
| DTC U0073 | Sending Malfunction (Navigation to APGS) (03/2012 - 07/2012) |
| DTC U0073 | Sending Malfunction (Navigation to APGS) (07/2012 -) |
| DTC U0100 | Lost Communication with ECM (03/2012 - 07/2012) |
| DTC U0100 | Lost Communication with ECM (07/2012 -) |
| DTC U0140 | Lost Communication with Body Control Module (03/2012 - 07/2012) |
| DTC U0140 | Lost Communication with Body Control Module (07/2012 -) |
| DTC U0155 | Meter ECU Communication (03/2012 - 07/2012) |
| DTC U0155 | Meter ECU Communication (07/2012 -) |
| DTC U1110 | Clearance Sonar ECU Communication (03/2012 - 07/2012) |
| DTC U1110 | Clearance Sonar ECU Communication (07/2012 -) |
Factory Service Tools
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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.
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