Diagnostic Trouble Code Chart

2010 Lexus RX 450h 3.5 BSECTION Diagnostic Trouble Code Chart
AUDIO AND VISUAL SYSTEM

DTC Code Detection Item Trouble Area See
B1585 USB Media Malfunction 1. Multi-media interface ECU
2. USB device or "iPod"
Refer to DTC B1585: USB Media Malfunction
B15A1 Audio HU Malfunction Radio receiver assembly Refer to DTC B15A1: Audio HU Malfunction; DTC B15B3: Radio Tuner Malfunction; DTC B15B4: CD Changer Malfunction; DTC B15B5: DVD Changer Malfunction; DTC B15B7: Bluetooth Module Malfunction
B15A3 Stereo Component Amplifier Malfunction Stereo component amplifier assembly Refer to DTC B15A3: Stereo Component Amplifier Malfunction
B15B3 Radio Tuner Malfunction Radio receiver assembly Refer to DTC B15A1: Audio HU Malfunction; DTC B15B3: Radio Tuner Malfunction; DTC B15B4: CD Changer Malfunction; DTC B15B5: DVD Changer Malfunction; DTC B15B7: Bluetooth Module Malfunction
B15B4 CD Changer Malfunction Radio receiver assembly Refer to DTC B15A1: Audio HU Malfunction; DTC B15B3: Radio Tuner Malfunction; DTC B15B4: CD Changer Malfunction; DTC B15B5: DVD Changer Malfunction; DTC B15B7: Bluetooth Module Malfunction
B15B5 DVD Changer Malfunction Radio receiver assembly Refer to DTC B15A1: Audio HU Malfunction; DTC B15B3: Radio Tuner Malfunction; DTC B15B4: CD Changer Malfunction; DTC B15B5: DVD Changer Malfunction; DTC B15B7: Bluetooth Module Malfunction
B15B7 Bluetooth Module Malfunction Radio receiver assembly Refer to DTC B15A1: Audio HU Malfunction; DTC B15B3: Radio Tuner Malfunction; DTC B15B4: CD Changer Malfunction; DTC B15B5: DVD Changer Malfunction; DTC B15B7: Bluetooth Module Malfunction
B15BA XM Tuner Malfunction Radio receiver assembly Refer to DTC B15BA: XM Tuner Malfunction
B15BB Multi-media Interface ECU Malfunction 1. USB device or "iPod"
2. No. 1 stereo jack adapter assembly
3. Wire harness or connector
4. Multi-media interface ECU
Refer to DTC B15BB: Multi-media Interface ECU Malfunction
B15C3 Speaker Output Short 1. Wire harness or connector
2. Speaker
3. Stereo component amplifier assembly
Refer to DTC B15C3: Speaker Output Short
B15DF USB Communication Malfunction 1. Multi-media interface ECU
2. USB device or "iPod"
Refer to DTC B15DF: USB Communication Malfunction
B15E1 Media Malfunction 1. CD or DVD
2. Radio receiver assembly
Refer to DTC B15E1: Media Malfunction
B15FE XM Tuner Antenna Disconnected 1. Satellite radio antenna
2. Radio receiver assembly
Refer to DTC B15FE: XM Tuner Antenna Disconnected; DTC B15FF: XM Tuner Antenna Short
B15FF XM Tuner Antenna Short 1. Satellite radio antenna
2. Radio receiver assembly
Refer to DTC B15FE: XM Tuner Antenna Disconnected; DTC B15FF: XM Tuner Antenna Short
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.