Headlight Switch For 2008-2010 Jeep Grand Cherokee, OE B791KM, With Auto Headlights

A Headlight Switch for the Jeep Grand Cherokee

This is a direct-fit headlight switch built for the 2008-2010 Jeep Grand Cherokee, cross-referenced to part number B791KM, designed for the auto-headlights setup used on these model years. If your headlights won't turn on, the switch feels loose or sticky, or the auto-headlight function has stopped working reliably, this switch is built as a direct replacement for the factory unit.

Why a Headlight Switch Fails

The headlight switch is a mechanical assembly with internal contacts that carry current every time you turn the lights on, and like any switch that sees years of daily use, those contacts and the detents that hold each position eventually wear. On a Grand Cherokee with the auto-headlight feature, the switch also has to interface correctly with the vehicle's light sensor logic, so a worn or failing switch can cause anything from headlights that won't respond at all to auto mode behaving inconsistently. Because this switch sees use every single time the vehicle is driven after dark, it accumulates far more cycles over its lifetime than most other interior controls, which is part of why it's a fairly common wear item on a vehicle with real mileage.

Key Features

• Cross-referenced to part number B791KM
• Built for the auto-headlights configuration used on 2008-2010 Grand Cherokee
• Direct-fit replacement for the factory switch
• New condition, not remanufactured

Specifications

• Part number: B791KM
• Configuration: With auto headlights
• Condition: New
• Fitment type: Direct replacement

Compatibility

Fits the 2008, 2009, and 2010 Jeep Grand Cherokee. This switch is built specifically for the auto-headlights configuration used on these model years, so it's worth confirming your Grand Cherokee has that feature before ordering, since a base manual-headlight switch may not be interchangeable with this part.

Signs This Part Needs Replacing

A failing headlight switch on a Grand Cherokee often shows up as headlights that don't respond when you turn the switch, an auto-headlight function that turns lights on and off unpredictably regardless of actual light conditions, or a switch that feels loose, sticky, or doesn't hold its position properly. Because the headlight switch is also often tied into dashboard illumination and sometimes fog lights depending on trim, a failing switch can affect more than just the headlights themselves.

Why Replace Rather Than Repair

Headlight switches are sealed assemblies that aren't designed to be opened and repaired, so once the internal contacts or the auto-headlight sensor interface start failing, replacement is the practical path rather than attempting a repair. A direct-fit replacement means the connector, mounting, and functions match the factory switch exactly, without the compatibility guesswork that comes with an aftermarket universal switch, and without the extra step of wiring in a switch that wasn't designed specifically for this dash layout.

Installation Notes

Replacing a headlight switch on a Grand Cherokee generally means removing the dashboard trim or bezel around the switch to access the mounting clips and electrical connector, which varies somewhat depending on your specific trim level and dash configuration. It's a straightforward job for anyone comfortable with basic dashboard trim removal, and disconnecting the battery beforehand is good practice any time you're working around electrical connectors near the dash. Taking a photo of the connector orientation before unplugging it is a small step that saves confusion when it's time to reconnect the new switch.

Ordering Information

This Jeep Grand Cherokee headlight switch is in stock and ships ready to install. Our Shipping Information page covers current timelines, and our Warranty and Returns pages explain what to do if anything isn't right on arrival. Not sure this matches your specific trim? Our Request a Part page is the fastest way to confirm before you order.

Related Parts

This headlight switch is listed in our Jeep collection, along with our Electrical Parts collection, where you'll find other parts for the Grand Cherokee.