DTC U1000: CAN Communication Failure (Message Registry) [09/2014 - 10/2018]: Procedure

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Lexus RC 350, 2018 Lexus RC 300, 2017 Lexus RC 350, 2017 Lexus RC 300, and 2017 Lexus RC 200t. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTC

Turn the engine switch on (IG).

Check for DTCs.

Refer to DTC CHECK / CLEAR [09/2014 - 10/2018]

Body Electrical > HL AutoLeveling > Trouble Codes

Result

Proceed to
OK
NG

Result:

OK

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 11/2017] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 10/2018]

Result:

NG

REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH. Refer to REMOVAL [09/2014 - 10/2018]