DTC U1000: CAN Communication Failure (Message Registry) [06/2018 - 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 FOR DTC

Clear the DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs

Check for DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

DTC U1000 is not output.

Result

Proceed to
OK
NG

HINT:

If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even if the DTC was not output when rechecking for DTCs.

Refer to PROBLEM SYMPTOMS TABLE [06/2018 - 08/2020] , or refer to PROBLEM SYMPTOMS TABLE [08/2020 - 08/2021] , or refer to PROBLEM SYMPTOMS TABLE [08/2021 - 09/2022]

Result:

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

Result:

REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]