DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Body Control Module; DTC U0163: Lost Communication with Navigation Control Module; DTC U0233: Lost Communication with Blind Spot Monitor Master Module; DTC U0293: Lost Communication with Hybrid Control Module; DTC U1110: Lost Communication with Intuitive Parking Assist Module [08/2021 - 09/2022]: Procedure

WARNING: This page is about a different car, the 2022 Lexus ES 300h, 2021 Lexus ES 300h, 2020 Lexus ES 300h, and 2019 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC OUTPUT

Clear the DTCs.
Chassis > Rear Camera > Clear DTCs

Recheck for DTCs and check that no DTCs are output.

Chassis > Rear Camera > Trouble Codes

HINT:

If CAN communication system DTCs are stored, they may also be stored in other systems.
If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

Result

Result	Proceed to
DTCs are output	A
No DTCs are output	B

Result:

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

Result:

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]