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 any of the following conditions is met:
| Navigation ECU |
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 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 CodesOK:
No DTCs are output.
OK | ![]() | USE SIMULATION METHOD TO CHECK |
NG | ![]() | REPLACE NAVIGATION ECU |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Panoramic View Monitor System: Image from Camera for Panoramic View Monitor is Abnormal
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Display Malfunction (B15A6,B15B0)
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