Understanding your Jeep Compass’s electrical system is crucial for troubleshooting and maintenance. This guide provides a comprehensive overview of the 2018 Jeep Compass Relay Box Diagram, including locations and functions of key relays. Knowing where these relays are located and what they control can save you time and money in the long run.
Relay Box Locations in the 2018 Jeep Compass
The 2018 Jeep Compass houses multiple relay boxes:
- Totally Integrated Power Module (TIPM): This is the primary relay box and is typically located in the engine compartment, often near the battery. The TIPM controls a wide range of critical functions, including engine starting, lighting, and various electronic modules.
- Passenger Compartment Fuse Box: This box, usually found under the dashboard or in the glove compartment, houses relays for interior features like power windows, door locks, and the radio.
Key Relays and Their Functions
While a complete relay diagram for the 2018 Jeep Compass can be found in the owner’s manual, here are some key relays and their associated functions:
- Starter Relay: This relay engages the starter motor, cranking the engine. A malfunctioning starter relay is a common cause of a vehicle not starting.
- Fuel Pump Relay: This relay powers the fuel pump, ensuring fuel delivery to the engine. Issues with this relay can lead to starting problems or engine stalling.
- Headlight Relay: Responsible for activating the high and low beam headlights. A faulty headlight relay can result in dim or non-functional headlights.
- Cooling Fan Relay: This relay controls the engine cooling fan, preventing overheating. Problems here can lead to engine overheating, especially in hot weather or during stop-and-go driving.
- Horn Relay: This relay activates the horn.
Using the 2018 Jeep Compass Relay Box Diagram
The 2018 Jeep Compass relay box diagram provides a visual representation of each relay’s location and the circuit it controls. The diagram typically uses symbols and abbreviations to identify each relay and its associated fuse.
Understanding the diagram is essential for:
- Troubleshooting electrical issues: If a specific component isn’t working, the diagram helps pinpoint the corresponding relay.
- Replacing a faulty relay: The diagram ensures you replace the correct relay with the appropriate amperage rating.
- Adding aftermarket accessories: Understanding the electrical system allows for safe and proper installation of accessories.
Where to Find the 2018 Jeep Compass Relay Box Diagram
- Owner’s Manual: This is the primary source for your vehicle’s specific relay box diagram.
- Online Resources: Websites dedicated to automotive repair often provide detailed diagrams and information for specific vehicle models.
Knowing the location and function of your 2018 Jeep Compass’s relays is a vital part of vehicle ownership. This knowledge empowers you to perform basic troubleshooting and maintenance, potentially saving you time and money on repairs. Always consult your owner’s manual for the most accurate and up-to-date information.
