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 MANUALSDODGE AND RAM2023DURANGO GT, RWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASELECTRONIC CONTROL MODULES (SERVICE INFORMATION)MODULE, AUTOMATIC HEADLAMP LEVELING (AHLM)STANDARD PROCEDUREAHLM CALIBRATION
2023 Dodge and Ram Durango GT, RWD
AHLM Calibration
2023 Dodge and Ram Durango GT, RWDSECTION AHLM Calibration
NOTE:
The following procedure is necessary and should be performed ONLY after an Automatic Headlamp Leveling Module (AHLM) is replaced with a new (uncalibrated) unit.
- Before beginning, the vehicle should be empty with between 1/4 and 1/2 tank of fuel.
- Perform a mechanical Front Lamp Alignment of the headlamps. Refer to FRONT LAMP ALIGNMENT .
- Calibrate the AHLM. Follow the steps outlined in the diagnostic scan tool under the AHLM Electronic Control Unit (ECU), Miscellaneous Functions.
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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.