LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Power Steering System (Except Hybrid) - Diagnostic Codes & Circuit Tests) >> POWER STEERING SYSTEM (for Gasoline Model) >> DTC C1582: Assist Map Number Mismatch [08/2020 - ] >> Description

DTC C1582: Assist Map Number Mismatch [08/2020 - ]: Description

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 250, 2023 Lexus ES 350, 2023 Lexus ES 250, and 2022 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

When an incorrect ECM, skid control ECU (brake actuator assembly) or AVS ECU (Absorber control ECU) (w/ Adaptive Variable Suspension System) is installed after the assist map has been written to the power steering ECU (rack and pinion power steering gear assembly), DTC C1582 is stored because the information stored in the power steering ECU (rack and pinion power steering gear assembly) does not match the vehicle specifications.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
C1582 Assist Map Number Mismatch Assist map number mismatch
  • CAN communication system
  • Incorrect ECM
  • Incorrect skid control ECU (brake actuator assembly)
  • AVS ECU (Absorber control ECU) (w/ Adaptive Variable Suspension System)
  • Rack and pinion power steering gear assembly
EPS warning light: Does not come on Engine switch on (IG) again -