Lexus RX (RX 350L, RX450h) 2016-2026 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.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15F5 | Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction | Air conditioning amplifier assembly vehicle setting processing malfunction |
|
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
| 1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here
OK:
CAN communication DTCs are not output.
| NG |  | GO TO CAN COMMUNICATION SYSTEM |
|
| 2. | CHECK AIR CONDITIONING SYSTEM |
(a) Check if the air conditioning system is malfunctioning.
Click here
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 |
|
| 3. | CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
|
| 4. | CHECK FOR DTC |
(a) Recheck for DTCs.
Body Electrical > Navigation System > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| A | | END |
| B | | REPLACE RADIO RECEIVER ASSEMBLY |
Telematics Transceiver Disconnected (B15DB)
DESCRIPTION If the radio receiver assembly cannot detect the DCM (telematics transceiver) for a certain period of time (90 seconds) after the engine switch is turned on (ACC) and the radio receiver as ...
Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)
DESCRIPTION This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the navigation system vehicle customization screen. HINT: The main body ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Pre-collision System: Utility
UTILITY NOTICE: If any of the following parts have been replaced, perform beam/optical axis learning. Otherwise all systems that use the parts may be affected.
Forward Recognition Camera: HINT: Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequenti ...
Lexus RX (RX 350L, RX450h) 2016-2026 Owners Manual > Using the driving support
systems: PCS
(Pre-Collision System)
The pre-collision system uses a radar sensor and camera sensor to
detect
vehicles and pedestrians in front of your vehicle. When the system determines
that the possibility of a frontal collision with a vehicle or pedestrian is
high, a
warning operates to urge the driver to take evasive action ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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