DTC U0322-51: Software Incompatibility with Body Control Module Not Programmed; DTC U0322-57: Software Incompatibility with Body Control Module Invalid/Incompatible Software Component [10/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus LS 500h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTCs (HEALTH CHECK)

Using the GTS, perform a health check.

DTCs are not output by any system other than the driver monitor camera system (Driver Monitor Camera Control).

Result

Result	Proceed to
U0322-51 and U0322-57 are not output by a system other than the driver monitor system	A
U0322-51 or U0322-57 is output by a system other than the driver monitor system	B

Result:

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL [10/2023 - ]

Result:

See step 2

REPLACE DRIVER MONITOR ECU ASSEMBLY
HINT:

Refer to REMOVAL [10/2023 - ]

Result

Proceed to

NEXT

Result:

NEXT

See step 3

CLEAR DTC

Clear the DTCs.
Chassis > Driver Monitor Camera Control > Clear DTCs

Turn the ignition switch off.

Result

Proceed to
NEXT

Result:

See step 4

CHECK FOR DTC

Check for DTCs.

Chassis > Driver Monitor Camera Control > Trouble Codes

Result

Result	Proceed to
DTCs are not output	A
DTCs are output	B

Result:

END (DRIVER MONITOR ECU ASSEMBLY IS DEFECTIVE)

Result:

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL [10/2023 - ]