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 U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [12/2019 - 09/2020]: Procedure
- CHECK FOR DTCs
- Using the GTS, check for electronically controlled brake system DTCs.
Chassis > Brake/EPB > Trouble Codes
HINT:
If DTC U0418-81 is output by the pre-collision system, perform troubleshooting for the electronically controlled brake system.
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
A
REPLACE FORWARD RECOGNITION CAMERA. Refer to REMOVAL [12/2019 - 09/2020]
Result:
B
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM
for HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]
for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]
- Using the GTS, check for electronically controlled brake system DTCs.
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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.