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.
2016 Lexus RC FFACTORY OEM SERVICE PROCEDURE
Can Communication System
CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [09/2014 - 08/2016]
| DTC Code | Description |
|---|---|
| U0104 | Lost Communication with Driving Support ECU |
| U0182 | Lost Communication with Lighting Control Module Front |
| U0198 | Lost Communication with Telematic Control Module |
| U0199 | Lost Communication with "Door Control Module A" |
| U0200 | Lost Communication with "Door Control Module B" |
| U0208 | Lost Communication with "Seat Control Module A" |
| U0209 | Lost Communication with "Seat Control Module B" |
| U0233 | Lost Communication with Blind Spot Monitor Master Module |
| U0235 | Lost Communication with Cruise Control Front Distance Range Sensor |
| U023A | Lost Communication with Front Camera Module |
| U0265 | Lost Communication with Parking Assist Monitor Module |
| U1002 | Lost Communication with Gateway Module (Sensor Bus) |
| U1002 | Lost Communication with Gateway Module (Main Body ECU) |
| U1002 | Lost Communication with Gateway Module (Network Gateway ECU) |
| U1110 | Lost Communication with Clearance Sonar Module |
| U1115 | Lost Communication with Tilt & Telescopic Module |
| U1117 | Lost Communication with Accessory Gateway |
| U1172 | Lost Communication with Vehicle Dynamics Control Module (ch2) |
CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2016 - 11/2017]
| DTC Code | Description |
|---|---|
| U0104 | Lost Communication with Driving Support ECU |
| U0132 | Lost Communication with Suspension Control ECU |
| U0182 | Lost Communication with Lighting Control Module Front |
| U0198 | Lost Communication with Telematic Control Module |
| U0199 | Lost Communication with "Door Control Module A" |
| U0200 | Lost Communication with "Door Control Module B" |
| U0208 | Lost Communication with "Seat Control Module A" |
| U0209 | Lost Communication with "Seat Control Module B" |
| U0233 | Lost Communication with Blind Spot Monitor Master Module |
| U0235 | Lost Communication with Cruise Control Front Distance Range Sensor |
| U023A | Lost Communication with Front Camera Module |
| U0265 | Lost Communication with Parking Assist Monitor Module |
| U1002 | Lost Communication with Gateway Module (Sensor Bus) |
| U1002 | Lost Communication with Gateway Module (Main Body ECU) |
| U1002 | Lost Communication with Gateway Module (Network Gateway ECU) |
| U1110 | Lost Communication with Clearance Sonar Module |
| U1115 | Lost Communication with Tilt & Telescopic Module |
| U1117 | Lost Communication with Accessory Gateway |
| U1172 | Lost Communication with Vehicle Dynamics Control Module (ch2) |
CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [11/2017 - 03/2019]
| DTC Code | Description |
|---|---|
| B1003 | ECU Malfunction |
| U0182 | Lost Communication with Lighting Control Module Front |
| U0199 | Lost Communication with "Door Control Module A" |
| U0200 | Lost Communication with "Door Control Module B" |
| U0208 | Lost Communication with "Seat Control Module A" |
| U0209 | Lost Communication with "Seat Control Module B" |
| U1002 | Lost Communication with Gateway Module (Main Body ECU) |
| U110F | Lost Communication With Roll Rate Sensor/Vertical Acceleration Sensor Module |
| U1115 | Lost Communication with Tilt & Telescopic Module |
| U1172 | Lost Communication with Vehicle Dynamics Control Module (ch2) |
CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [03/2019 - 01/2023]
| DTC Code | Description |
|---|---|
| B1003 | ECU Malfunction |
| U0132-87 | Lost Communication with Suspension Control Module "A" Missing Message |
| U0182 | Lost Communication with Lighting Control Module Front |
| U0199 | Lost Communication with "Door Control Module A" |
| U0200 | Lost Communication with "Door Control Module B" |
| U0208 | Lost Communication with "Seat Control Module A" |
| U0209 | Lost Communication with "Seat Control Module B" |
| U1002 | Lost Communication with Gateway Module (Main Body ECU) |
| U1115 | Lost Communication with Tilt & Telescopic Module |
| U1172 | Lost Communication with Vehicle Dynamics Control Module (ch2) |
CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [01/2023 - ]
| DTC Code | Description |
|---|---|
| B1003 | ECU Malfunction |
| U0132-87 | Lost Communication with Suspension Control Module "A" Missing Message |
| U0182 | Lost Communication with Lighting Control Module Front |
| U0199 | Lost Communication with "Door Control Module A" |
| U0200 | Lost Communication with "Door Control Module B" |
| U0208 | Lost Communication with "Seat Control Module A" |
| U0209 | Lost Communication with "Seat Control Module B" |
| U1002 | Lost Communication with Gateway Module (Main Body ECU) |
| U1115 | Lost Communication with Tilt & Telescopic Module |
Factory Service Tools
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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.