Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2009GRAND CHEROKEE 2WD V8-4.7LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - LIGHTING AND HORNSHEADLAMP ALIGNMENT CONTROL MODULEDESCRIPTION AND OPERATIONHEADLAMP LEVELING MODULE - DESCRIPTION
2009 Jeep Grand Cherokee 2WD V8-4.7L
Headlamp Leveling Module - Description
2009 Jeep Grand Cherokee 2WD V8-4.7LSECTION Headlamp Leveling Module - Description
DESCRIPTION
An Automatic Headlamp Leveling Module (AHLM) (1) is standard equipment with the optional High Intensity Discharge (HID) headlamps. The AHLM is located on the bottom of the right front lamp unit housing, but serves both the right and left front lamp units. This module works in conjunction with the front and rear axle sensors and the headlamp leveling motors to provide automatic headlamp beam adjustment to compensate for changes in vehicle height cased by changes in vehicle loading, acceleration or deceleration.
The molded black plastic AHLM housing has integral mounting flanges (4) that are secured by a stamped aluminum cover plate and four screws to a receptacle in the bottom of the right front lamp unit housing. Concealed within the housing is the circuitry of the module, which includes a microprocessor. The module is connected through an integral connector receptacle (2) to the vehicle electrical system by a take out and connector of the right front lamp unit wire harness.
The AHLM cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.