Hyundai Genesis DH Quiz
Body Electrical System

Automatic Headlamp Leveling Device Troubleshooting

In this manual: Body Electrical System
General Information — 9Engine Mechanical System — 103Engine Electrical System — 54Emission Control System — 23Engine Control System/Fuel System — 127Automatic Transmission System (SBC) — 90All-Wheel Drive (AWD) System — 20Drive Shaft and Axle — 27Suspension System — 41Steering — 19Restraints — 56Brake System — 56Body (Interior and Exterior) — 211Body Electrical System — 279Heating, Ventilation, and Air Conditioning — 55
9steps
~54min
2/5difficulty
Done 0 of 9

Inspection Using GDS

Initialization and diagnosis sequence using GDS equipment. The following is a general A/S procedure.
No Procedure
1 Park the vehicle on a level surface.
2 Check tires.
3 IGN1 ON.
4 Low beam headlamps on.
5 Communication with Diagnostic Tool
6 Initial command from diagnostic tool
7 Clear trouble code
8 IGN1 OFF > ON
9 Reconnect to diagnostic tool
10 Check HLLD output value as 15% and DTC
11 Operate the leveling device by diagnostic tool command
12 Headlamp Mechanical Initial Aiming

  1. Remove all cargo from the vehicle and park it on a level surface.
  2. Check the HLLD output value (15%) after initial adjustment.
  3. After the initial electrical adjustment using the diagnostic tool, perform the mechanical adjustment.
  1. Select the vehicle model and "Automatic Headlamp Leveling System (AHLS)".
  2. Check the sensor output value and the data of each item on the system information screen.
  3. For the AHLS output function test, select "Actuation Test".
  4. Select "Parameter Setting and Zero Initial Position".
  5. Make sure the AHLS system is forcibly operated in the "Headlamp Leveling" menu.
  6. To check the headlamp leveling system trouble codes, select "Diagnostic Trouble Codes".

Test yourself

A quick Hyundai Genesis DH quiz: every answer comes with an explanation and a link to the manual page.