Where is the headlamp control module located?
In most vehicles, the headlamp control module is located either in the engine bay near the headlight assembly or inside the cabin behind the dash near the steering column. The exact spot varies by make, model, and year.
Common locations for the headlamp control module
Locations vary by vehicle design, but several spots are commonly used. The following list summarizes typical placements you may encounter.
- Engine bay near the front corner, mounted on a bracket close to one of the headlight assemblies.
- Under-hood fuse/relay box or power distribution center, where the module is sometimes integrated or mounted nearby.
- Inside the cabin behind the dashboard, often on the driver's side under the knee airbag area or near the steering column.
- Behind the glove compartment or kick panel, accessible by removing panels to reach the module and connectors.
- On the steering column or integrated with the headlight switch assembly, typical in some newer vehicles where the HCM is part of the multifunction switch.
- In some modern vehicles, the HCM is located within the body control module area or behind the center console, especially in models with advanced lighting controls.
Most owners will find the HCM in one of these locations; if you still can't locate it, consult the owner's manual or a qualified technician for vehicle-specific diagrams.
How to locate the headlamp control module in your specific vehicle
To determine the precise location for your car, use these steps. They help you identify the exact unit without guessing from pictures alone.
- Check the owner's manual, specifically the electrical/system diagrams or body electronics sections.
- Open the hood and inspect the front-left and front-right corners near each headlight for a small electronic module with multiple wiring harnesses.
- If not found in the engine bay, remove panels under the steering wheel or beneath the dashboard on the driver or passenger side to look for a module behind kick panels or under the dash.
- Look at the fuse/relay box lids or the service manual; some manuals label the HCM or show its location in diagrams.
- If still unresolved, search the vehicle’s service information (factory manuals, Alldata, Mitchell1) or contact a dealer or certified mechanic for a VIN-specific diagram.
Knowing the exact model year and trim level helps, as location can shift between generations and options such as LED vs. halogen headlights.
Brand-specific variations
Some manufacturers place the headlamp control module in less conventional spots. For example, certain European brands may hide the module behind a fuse box cover, while some American brands integrate it with the body control module. When in doubt, a VIN-specific service diagram from the manufacturer or a trained technician will confirm the exact location.
Summary
The headlamp control module is not in the same place for every car. Common spots include the engine bay near the headlights, under-hood fuse boxes, and inside the cabin behind the dash or glove compartment. For precise location, consult the owner’s manual or a service manual that matches your exact vehicle and year, or ask a dealer or independent auto electrician.
How do I know if my headlight control module is bad?
A faulty headlight control module can cause one side's headlights to fail completely. Begin by testing the module's electrical connections and fuses for continuity. Use a multimeter to check voltage supply and ground at the module.
Where is the lighting control module?
The lighting control is underneath the lower dashboard on the driver's side. Unhook the three connectors from the lighting control module. Locate the top two connector points on the lighting control module, bypass attached connectors firmly to bypass module and click them into place.
How much does it cost to replace a headlight control module?
The average cost for a Headlamp Control Module Replacement is between $693 and $771. Labor costs are estimated between $166 and $243 while parts are typically priced around $527. This range does not include taxes and fees, and does not factor in your unique location.
What is a headlight module?
A module that controls and monitors the functions of a vehicle's headlights.
