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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2025HIGHLANDER XLE, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWARNING SYSTEMSVEHICLE PROXIMITY NOTIFICATION SYSTEM - DIAGNOSTIC CODES & SYMPTOM TESTSVEHICLE PROXIMITY NOTIFICATION SYSTEMDTC U0129: LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE; DTC U0140: LOST COMMUNICATION WITH BODY CONTROL MODULE; DTC U0293: LOST COMMUNICATION WITH HYBRID/EV POWERTRAIN CONTROL MODULE [12/2019 - 10/2022]DESCRIPTION
2025 Toyota Highlander XLE, FWD
DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0293: Lost Communication with Hybrid/EV Powertrain Control Module [12/2019 - 10/2022]: Description
2025 Toyota Highlander XLE, FWDSECTION Description
These DTCs are stored when the CAN communication system is malfunctioning.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0129 | Lost Communication with Brake System Control Module | The vehicle approaching speaker controller does not receive data from the No. 2 skid control ECU (brake actuator assembly) for approximately 10 seconds or more. |
|
| U0140 | Lost Communication with Body Control Module | The vehicle approaching speaker controller does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more. |
|
| U0293 | Lost Communication with Hybrid/EV Powertrain Control Module | The vehicle approaching speaker controller does not receive data from the hybrid vehicle control ECU for approximately 10 seconds or more. |
|
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.