Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
C1AB413Outer Mirror Indicator (Module "B" Side) Circuit Open
C1AB413Outer Mirror Indicator (Module "B" Side) Circuit Open
Manufacturer communications
5Original wording in English
TOYOTA
Some 2024 – 2025 model year Grand Highlander and Grand Highlander Hybrid vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM malfunction message on the multi-information display (MID), or the driving assist information indicator is illuminated, along with one or more of the f…
LEXUS
Some 2023 – 2025 model year RX 350, RX 350h, RX 500h, and 2024 – 2025 model year TX 350, TX 500h, and TX 550h+ vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM malfunction message on the multi-information display (MID), or the driving assist information indicator is illumi…
TOYOTA
TSB: REVISION NOTICE June 12, 2018 Rev1: ? The Production Change Information section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2018 model year Sequoia vehicles equipped with Blind Spot Monitor (BSM) and auto-dimming mirrors may exhibit a BSM warning message in the combination mete…
TOYOTA
Some 2013 model year Avalon and Avalon HV vehicles may display a ?Check Blind Spot Monitor System? message on the multi-information display with Diagnostic Trouble Code (DTC) C1AB4 and/or C1AB5 stored. The procedure in this bulletin has been developed to address this condition.
Check vehicle applicability
16A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Lexus | RX ↗ | 2025 |
| Lexus | RX ↗ | 2024 |
| Lexus | RX ↗ | 2023 |
| Lexus | RX HYBRID ↗ | 2025 |
| Lexus | RX HYBRID ↗ | 2024 |
| Lexus | RX HYBRID ↗ | 2023 |
| Lexus | TX ↗ | 2025 |
| Lexus | TX ↗ | 2024 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.