DTC U0104-87: Lost Communication with Cruise Control Module Missing Message [10/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus LS 500. However, it is still accessible from the selected car via links, so may be relevant.
The millimeter wave radar sensor assembly communicates with the forward recognition camera via CAN communication.
If a communication error is detected between the forward recognition camera and millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| U0104-87 | Lost Communication with Cruise Control Module Missing Message | Detection condition:
Malfunction status:
Malfunction duration:
|
|
Front Radar Sensor | B |
HINT:
If the DTCs are output simultaneously, the inspection area can be narrowed down.
W/ ADVANCED PARK
| Pattern | DTC output part name (Display on GTS) |
Suspected Area (Malfunction Status) | |||
|---|---|---|---|---|---|
| Millimeter Wave Radar Sensor Assembly | Forward Recognition Camera | Clearance warning ECU assembly | Parking assist ECU | ||
| Front Radar Sensor | Front Recognition Camera | Clearance Warning | Circumference Monitoring Camera Control Module | ||
| U0104-87 | U0235-87 | U1179-87 | U11B6-87 | ||
| Pattern 1 | ◦ | ◦ | ◦ | ◦ | Connector (Poor connector) |
| Harness or connector (Open or short) | |||||
| Millimeter wave radar sensor assembly (Internal malfunction) | |||||
| Clearance warning ECU assembly (Internal malfunction) | |||||
| Parking assist ECU (Internal malfunction) | |||||
| Forward recognition camera (Internal malfunction) | |||||
| Pattern 2 | ◦ | - | - | - | Connector (Poor connector) |
| Harness or connector (Open) | |||||
| Millimeter wave radar sensor assembly (Internal malfunction) | |||||
| Forward recognition camera (Internal malfunction) | |||||
◦: DTC is output-: DTC is not output
W/O ADVANCED PARK
| Pattern | DTC output part name (Display on GTS) |
Suspected Area (Malfunction Status) | |
|---|---|---|---|
| Millimeter Wave Radar Sensor Assembly | Forward Recognition Camera | ||
| Front Radar Sensor | Front Recognition Camera | ||
| U0104-87 | U0235-87 | ||
| Pattern 1 | ◦ | ◦ | Connector (Poor connector) |
| Harness or connector (Open or short) | |||
| Millimeter wave radar sensor assembly (Internal malfunction) | |||
| Forward recognition camera (Internal malfunction) | |||
| Pattern 2 | ◦ | - | Connector (Poor connector) |
| Harness or connector (Open) | |||
| Millimeter wave radar sensor assembly (Internal malfunction) | |||
| Forward recognition camera (Internal malfunction) | |||
◦: DTC is output-: DTC is not output