Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: HD Radio Tuner Malfunction (B1551,B15A0,B15B3-B15B5,B15B7,B15F9)

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System (for 12.3 Inch Display) / HD Radio Tuner Malfunction (B1551,B15A0,B15B3-B15B5,B15B7,B15F9)

DESCRIPTION

These DTCs are stored when a malfunction occurs in the radio receiver assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1551	HD Radio Tuner Malfunction	When any of the following conditions is met: "HD Radio" tuner decoder malfunction "HD Radio" tuner audio output section malfunction "HD Radio" tuner decoder RF/IF malfunction	Radio receiver assembly
B15A0	LAN Master Malfunction	When either of the following conditions is met: Bus malfunction EEPROM error	Radio receiver assembly
B15B3	Radio Tuner Malfunction	When any of the following conditions is met: AM tuner PLL is unlocked FM tuner PLL is unlocked Tuner malfunction	Radio receiver assembly
B15B4	CD Changer Malfunction	When any of the following conditions is met: Mechanism drive signal malfunction Load/Eject malfunction Read mechanism malfunction Mechanical malfunction	Radio receiver assembly
B15B5	DVD Changer Malfunction	When any of the following conditions is met: Mechanism drive signal malfunction Load/Eject malfunction Read mechanism malfunction Mechanical malfunction	Radio receiver assembly
B15B7	Bluetooth Module Malfunction	"Bluetooth" module malfunction	Radio receiver assembly
B15F9	UART Communication Malfunction(for A/C)	When either of the following conditions is met: Open in UART communication line is detected during radio receiver assembly startup routine Open in UART communication line is detected based on communication error	Radio receiver assembly

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

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PROCEDURE

CHECK DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

REPLACE RADIO RECEIVER ASSEMBLY

Extension Module Disconnected 2 (B1543)

DESCRIPTION If the radio receiver assembly cannot detect the navigation ECU for a certain period of time (90 seconds) after the engine switch is turned on (ACC) and the radio receiver assembly confirm ...

Extension Module Malfunction 2 (B1556)

DESCRIPTION This DTC is stored when a malfunction occurs in the Navigation ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B1556 Extension Module Malfunction 2 When a ...

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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Rear Axle Carrier (for 2wd): Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during rear axle carrier sub-assembly removal/installation are shown below. Necessary Procedures After Parts R ...

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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: HD Radio Tuner Malfunction (B1551,B15A0,B15B3-B15B5,B15B7,B15F9)

Extension Module Disconnected 2 (B1543)

Extension Module Malfunction 2 (B1556)

Other materials:

Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual