Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)

DESCRIPTION

This DTC is stored when items controlled by the air conditioning amplifier assembly cannot be customized via the navigation system vehicle customization screen.

HINT:

The air conditioning amplifier assembly controls the air conditioning system related items that are customizable via the multi-display assembly screen.

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 Navigation System.

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PROCEDURE

(a) Use the Techstream to check if the CAN communication system is functioning normally.

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OK:

CAN communication DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

(a) Check if the air conditioning system is malfunctioning.

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HINT:

Customization may not be possible depending on the malfunction in the air conditioning system.

OK:

No malfunctions are present in the air conditioning system.

NG

GO TO AIR CONDITIONING SYSTEM

OK

(a) Clear the DTCs.

NEXT

(a) Recheck for DTCs.

A

END

B

REPLACE RADIO RECEIVER ASSEMBLY