Hyundai Equus: Auto Head lamp leveling Unit Description and Operation
Second generation VI (2009–2025) / Hyundai Equus VI 2009-2025 Service Manual / Body Electrical System / Head lamp leveling Device / Auto Head lamp leveling Unit Description and Operation
| Description |
According to driving environment and loading state of
vehicle, head lamp lighting direction is changed to keep the driver's
visibility range and to protect the driver's vision from glare, aiming
at safety driving.
Sensor integrated ECU mounting on the rear center arm drives
the actuator mounting on the head lamp since sensing the input signal
following the vehicle's statical changes.
Head lamp beam is automatically operated by chassis tilt.
| Operation |
Operating Procedure
| 1. |
Suspension angle change resulted from vehicle's load change. |
| 2. |
Sensor angle change. |
| 3. |
Microprocessor calculates necessary head lamp angle change amount. |
| 4. |
Sending a proper signal to head lamp levelling device and driving actuator. |
Operating Condition
| 1. |
Ignition on |
| 2. |
Low beam on |
| 3. |
On stop : If sensor lever change is 2° and above, head lamp is operated after max. 1.5 sec. |
| 4. |
On driving : If vehicle velocity is over 4km/h(2.48mile/h),
velocity change is not over 0.8-1.6km/h(0.5 ~ 1.0mile/h) per second, and
loading condition is changed, then head lamp is operated. |
Components
| 1. |
Auto head lamp leveling unit
|
| 2. |
Actuator
|
Auto Head lamp leveling Unit Schematic Diagrams
Circuit Diagram
...
Auto Head lamp leveling Unit Repair procedures
Removal
1.
Remove the head lamp leveling unit linkage (A) from trailing arm.
2.
Loosen the mounting bolts (3EA) of automatic head lamp leveling unit assembly.
Tightening torque :
3 ~ 5 N.m ...
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