To find the relevant fuse or relay:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram of your vehicle's fuse box and relay locations, and will likely list the fuse or relay responsible for the ABS system. Look for terms like "ABS," "Anti-lock Brakes," or related terms.
2. Check the Power Distribution Center (PDC): This is usually located under the hood, often near the battery. It's a large box with numerous fuses and relays. Look closely at the diagram on the inside of the PDC's cover.
3. If you can't find it in the PDC, check the interior fuse box: Some Chrysler 300 models might have a secondary fuse box inside the cabin, usually under the dashboard. Again, consult your owner's manual.
Important Note: Working with the electrical system requires caution. Disconnect the negative battery terminal before working on fuses or relays to avoid electrical shock or damage. If you're unsure about any step, consult a qualified mechanic.