2020 Jeep Grand Cherokee Bulb Size Guide

Quick reference

LED vs halogen upgrade considerations

When upgrading from halogen to LED bulbs in your 2020 Jeep Grand Cherokee, there are a few important factors to consider. First, many modern vehicles, including the Grand Cherokee, use a CANBUS system to monitor the vehicle's electrical components. Since LED bulbs draw less power than halogen bulbs, the CANBUS system may interpret this as a burnt-out bulb and trigger a dashboard error message. To avoid this, you will likely need to install a CANBUS-compatible LED bulb or an anti-flicker warning canceller.

Another consideration is the physical installation of the new bulbs. While many LED bulbs are designed to be a direct replacement for their halogen counterparts, some may require an adapter to fit properly in the housing. This is particularly true for headlight and fog light bulbs, which need to be securely fastened to ensure proper alignment and beam pattern. It is always a good idea to check the manufacturer's specifications and read reviews from other Grand Cherokee owners before purchasing new LED bulbs.

How to replace each bulb

Replacing the bulbs in your 2020 Jeep Grand Cherokee is a relatively straightforward process, but it can be time-consuming depending on the location of the bulb. Here are a few tips for replacing each type of bulb:

• Headlights and Fog Lights: These bulbs are located in the front of the vehicle and can be accessed by opening the hood. You will need to remove the dust cover and then disconnect the wiring harness before you can remove the old bulb. When installing the new bulb, be careful not to touch the glass with your bare hands, as the oils from your skin can cause the bulb to overheat and fail prematurely.
• Turn Signals and Tail Lights: The front turn signal bulbs are located in the headlight assembly, while the rear turn signal and tail light bulbs are in the tail light assembly. To access these bulbs, you will need to remove the entire assembly from the vehicle. This usually involves removing a few screws and then carefully prying the assembly away from the body.
• Interior Lights: The dome, map, and other interior lights are usually held in place by a plastic cover. You can use a small, flat-head screwdriver to gently pry the cover off and then access the bulb.

Common lighting issues for this generation

The 2020 Jeep Grand Cherokee is a reliable vehicle, but there are a few common lighting issues that owners have reported. One of the most common issues is premature headlight burnout. This can be caused by a number of factors, including a faulty wiring harness, a voltage regulator problem, or simply using low-quality bulbs. If you are experiencing this issue, it is a good idea to have your vehicle inspected by a qualified mechanic to determine the root cause of the problem.

Another common issue is a flickering or intermittent headlight. This can be caused by a loose connection, a faulty ballast (in HID systems), or a problem with the vehicle's computer. In some cases, a simple "reboot" of the vehicle's computer can solve the problem. However, if the issue persists, you will need to have your vehicle inspected by a professional.

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