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Home >> Lexus >> 2025 >> RX 350h Premium >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (5 Of 9) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (except Gasoline Model) >> DTC U0110-00: Lost Communication with Drive Motor Control Module "A"; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module; DTC U1106-00: Lost Communication with Electric Parking Brake Module; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [10/2022 - ] >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

U0110 (CASE 2)

Either of the following conditions is met A or B
A. Following condition is met More than 3 times
Communication reception with hybrid motor control inverter assembly "A" (CH2) Delayed
B. Checksum error exist with hybrid motor control inverter assembly "A" (CH2) -
U0129

Either of the following conditions is met A or B
A. Following condition is met More than 3 times
Communication reception with No. 2 skid control ECU (brake actuator assembly) (CH1) Delayed
B. Checksum error exist with No. 2 skid control ECU (brake actuator assembly) (CH1) -
U0293

Either of the following conditions is met A or B
A. Following condition is met More than 3 times
Communication reception with hybrid vehicle control ECU (CH1) Delayed
B. Checksum error exist with hybrid vehicle control ECU (CH1) -
U1150

Either of the following conditions is met A or B
A. Following condition is met More than 3 times
Communication reception with hybrid vehicle control ECU (CH2) Delayed
B. Checksum error exist with hybrid vehicle control ECU (CH2) -
U117D

Either of the following conditions is met A or B
A. Following condition is met More than 3 times
Communication reception with No. 2 skid control ECU (brake actuator assembly) (CH2) Delayed
B. Checksum error exist with No. 2 skid control ECU (brake actuator assembly) (CH2) -