TRAINING & WEBINARS
🎥 EVENT RECAP
Toyota & Lexus ADAS Diagnostics: ROB Codes, ECU Security Key, Radar, Camera & Sensor Calibration
Opus IVS hosted a technical session with Marlen Hunter, Toyota/Lexus specialist and IVS 360 Technician, focused on practical ADAS diagnostics and calibration issues. Marlen walked through how to interpret Record of Behavior (ROB) codes, when ECU Security Key is required, common Toyota calibration patterns, and how to use both DrivePro tools and Toyota’s GTS to solve real-world repair challenges.
Throughout the webinar, DrivePro 2 served as the primary tool for ADAS utilities, ROB code checks, radar readings and sensor calibration workflows while GTS was used only when Toyota requires OEM-level authentication such as ECU Security Key or module configuration.
WATCH THE WEBINAR RECORDING HERE
KEY TAKEAWAYS
Record of Behavior (ROB) Codes
Toyota uses ROB codes to store historical ADAS events that often cause warning lights even after a repair. Marlen demonstrated how DrivePro 2 makes it easy to access and clear Toyota ROB codeswithin the ADAS utilities why Toyota stores them long-term.
ECU Security Key
Newer Toyota/Lexus models frequently require a Security Key “handshake” when replacing ADAS modules such as cameras, radars, blind-spot monitors, SRS modules, or steering angle sensors. Failing to perform this step leads to communication U-codes.
Security Key must be performed in Toyota GTS.
Radar, Camera & Sensor Calibration
Marlen walked through Toyota’s calibration methods including triangle/trihedral radar targets, flat targets, and driving adjustment mode. He also showed radar misalignment readings and explained why certain calibrations fail before starting.
Front & Rear Sonar / Clearance Sensors
Toyota now requires recalibration for sensors even when they’re simply moved between bumpers. Using a digital angle gauge, Marlen demonstrated how to enter sensor angles in the clearance warning module—something that can be done directly through DrivePro 2, without needing GTS.
Blind-Spot Monitoring (BSM)
BSM calibrations often fail due to minor structural damage or bent brackets after a collision. Marlen explained how to verify sensor angle with a digital gauge and how small misalignments cause repeated failures.
Rear Camera Gridline Fix
A common Toyota/Lexus issue: after battery or steering angle changes, rear camera gridlines disappear. Marlen showed how to retrain steering angles through the radio’s diagnostic mode—no scan tool required.
Case Example: 2023 Toyota Tundra
A shop chased U-codes for a missing trailer brake module. The root cause was a replaced camera plus an unperformed ECU Security Key procedure. Service information + GTS resolved the issue.
Top Questions From Technicians
Attendees asked about:
- Long radar and sonar calibration times (e.g., 2024 Highlander)
- When to clear ROB history
- Radar/BSM calibration after unplugging modules
- Liftgate issues after R&I
- Tools for radar/BSM angle accuracy
- ADAS labor guidance
- Whether Toyota labels modules like GM
- How often ECU Security Key is required
- Toyota ADAS job aids
- Pricing for the Opus radar/BSM target tool