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.
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HOMESERVICE MANUALSTOYOTA2025HIGHLANDER HYBRID XLEREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATING / AIR CONDITIONING SYSTEM (HV) - DIAGNOSTIC CODES (3 OF 3), CIRCUIT TESTS & SYMPTOM TESTSAIR CONDITIONING SYSTEM (FOR HV MODEL)DTC U0100: LOST COMMUNICATION WITH ECM / PCM "A"; DTC U0131: LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE; DTC U0142: LOST COMMUNICATION WITH BODY CONTROL MODULE "B"; DTC U0151: LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE; DTC U0155: LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE; DTC U0163: LOST COMMUNICATION WITH NAVIGATION CONTROL MODULE; DTC U0293: LOST COMMUNICATION WITH HV ECU [10/2022 - 11/2023]DESCRIPTION
2025 Toyota Highlander Hybrid XLE
DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U0163: Lost Communication with Navigation Control Module; DTC U0293: Lost Communication with HV ECU [10/2022 - 11/2023]: Description
2025 Toyota Highlander Hybrid XLESECTION Description
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| U0100 | Lost Communication with ECM / PCM "A" | No communication with ECM |
|
Memorized |
| U0131 | Lost Communication with Power Steering Control Module | No communication with power steering ECU (rack and pinion power steering gear assembly) |
|
Memorized |
| U0142 | Lost Communication with Body Control Module "B" | No communication with main body ECU (multiplex network body ECU) |
|
Memorized |
| U0151 | Lost Communication with Restraints Control Module | No communication with airbag sensor assembly |
|
Memorized |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | No communication with combination meter assembly |
|
Memorized |
| U0163 | Lost Communication with Navigation Control Module | No communication with radio and display receiver assembly |
|
Memorized |
| U0293 | Lost Communication with HV ECU | No communication with hybrid vehicle control ECU |
|
Memorized |
RENDER: 1.0x
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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.