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Home >> Lexus >> 2017 >> IS 200t Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Automatic Headlight Beam Level Control System - Diagnostics - Introduction >> Automatic Headlight Beam Level Control System >> Problem Symptoms Table [04/2013 - 10/2016] >> Problem Symptoms Table [04/2013 - 10/2016]

Problem Symptoms Table [04/2013 - 10/2016]

HINT: 

AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM

Symptom Suspected Area Link
Automatic headlight beam level control system does not operate Check DTCs Refer to DTC CHECK / CLEAR [04/2013 - 09/2020] 
Check fail-safe function Refer to FAIL-SAFE CHART [04/2013 - 10/2016] 
Headlight leveling ECU power source circuit Refer to Headlight Leveling ECU Power Source Circuit [04/2013 - 10/2016]
Headlight beam level control actuator circuit Refer to Headlight Beam Level Control Actuator Circuit [04/2013 - 10/2016]
Headlight leveling ECU assembly Refer to REMOVAL [04/2013 - 10/2016]
Initialization cannot be performed Check DTCs Refer to DTC CHECK / CLEAR [04/2013 - 09/2020] 
CAN communication system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 10/2016]
Headlight leveling ECU assembly Refer to REMOVAL [04/2013 - 10/2016]
Headlight leveling warning light does not come on when turning the engine switch on (IG) Headlight leveling ECU assembly Refer to REMOVAL [04/2013 - 10/2016]
Combination meter assembly Refer to REMOVAL [04/2013 - 10/2016]
NOTE:
  • Initialize the headlight leveling ECU assembly after the vehicle height changes due to replacement of suspension components or after performing operations such as removal and reinstallation or replacement of the rear height control sensor sub-assembly.
  • When the headlight leveling ECU assembly is replaced, initialization is also necessary.