Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC U0104-87: Lost Communication with Cruise Control Module Missing Message [12/2019 - 09/2020]: Description
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 |
|---|---|---|---|
| U0104-87 | Lost Communication with Cruise Control Module Missing Message | Detection condition:
Malfunction status:
Malfunction duration:
|
|
| Pattern | DTC output part name (Display on GTS) |
Suspected Area (Malfunction Status) | |
|---|---|---|---|
| Millimeter Wave Radar Sensor Assembly (Front Radar Sensor) |
Forward Recognition Camera (Pre-Collision System) |
||
| U0104-87 | U0235-87 | ||
| Pattern 1 | ◦ | ◦ |
|
| Pattern 2 | ◦ | - |
|
◦: DTC is output-: DTC is not output
HINT:
If the DTCs are output simultaneously, the inspection area can be narrowed down.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.