2018 Jeep Grand Cherokee Bulb Size Guide

Quick Reference: 2018 Jeep Grand Cherokee Bulb Sizes

The 2018 Jeep Grand Cherokee offers a range of lighting options across its various trim levels, from Laredo to Summit. It's crucial to identify your specific trim and factory lighting configuration to ensure you purchase the correct bulb sizes. Lower trims typically feature traditional halogen setups, while higher trims like Overland, Summit, and SRT often come equipped with High-Intensity Discharge (HID) projector headlights and integrated LED lighting for elements like daytime running lights, tail lights, and sometimes fog lights.

For instance, models with HID headlights will use D3S bulbs for both low and high beams, utilizing a bi-xenon projector. Halogen-equipped models will have separate H11 bulbs for low beams and 9005 bulbs for high beams. Daytime Running Lights (DRLs) can vary significantly; some models use a PSX24W halogen bulb, while others incorporate integrated LED strips that are not user-serviceable as individual bulbs. Front and rear turn signals, brake lights, and reverse lights are generally halogen across most trims, though some higher trims might incorporate LED tail light assemblies where the brake and tail light functions are integrated LEDs.

LED vs. Halogen Upgrade Considerations

Upgrading your 2018 Jeep Grand Cherokee's halogen bulbs to LEDs can offer significant improvements in brightness, longevity, and a more modern aesthetic. However, there are several key factors to consider to ensure a successful and trouble-free conversion:

• CANBUS Errors: Modern vehicles like the Grand Cherokee utilize a CANBUS (Controller Area Network Bus) system that monitors the electrical current drawn by lights. LED bulbs draw significantly less power than halogen bulbs, which can trick the CANBUS system into thinking a bulb is out, resulting in