If your 2018 Jeep Compass will not start, a jump start can get you back on the road quickly. Many drivers worry about damaging electronics or doing the steps incorrectly. The process is safe if you follow simple instructions and take a few precautions. This guide covers everything you need to know to jump a 2018 Jeep Compass, even if you are not a car expert.
What You Need Before You Start
To safely jump your Jeep Compass, you need:
- A set of jumper cables (at least 10-gauge, 10 feet long)
- Another vehicle with a healthy 12-volt battery
- Safety glasses and gloves (recommended)
- A clear, safe area away from traffic
Never try to jump a car with a frozen battery or if you see cracks or leaks. Call for help in those cases.
Step-by-step Guide To Jump Starting A 2018 Jeep Compass
1. Position The Cars Safely
Park the working car close enough for the jumper cables to reach both batteries, but make sure the vehicles do not touch. Turn off both ignitions and set parking brakes.
2. Open The Hoods And Find The Batteries
On the 2018 Jeep Compass, the battery is under the hood on the driver’s side. Remove any plastic covers if necessary.
3. Connect The Jumper Cables In Correct Order
Doing this in the right order is important to avoid sparks:
- Attach one red (positive) clamp to the positive (+) terminal on the dead Jeep battery.
- Attach the other red clamp to the positive terminal on the good battery.
- Attach one black (negative) clamp to the negative (–) terminal on the good battery.
- Attach the last black clamp to an unpainted metal surface on the Jeep’s engine block, not the battery. This grounds the circuit and reduces fire risk.
- Start the Working Vehicle
Let it run for about 2-3 minutes. This sends power to your Jeep’s battery.
5. Try To Start Your Jeep Compass
Turn the key or press the start button. If it does not start, wait a few minutes and try again.
6. Remove The Jumper Cables In Reverse Order
Remove the black clamp from the Jeep’s engine block first, then the black from the good battery, then both reds. Be careful not to let clamps touch.
7. Let Your Jeep Run
Keep the Compass running for at least 20 minutes or drive around. This helps recharge the battery.
Here’s a quick comparison to see how the 2018 Jeep Compass battery setup compares to similar SUVs:
| Vehicle | Battery Location | Typical Size |
|---|---|---|
| 2018 Jeep Compass | Driver side, under hood | 12V, Group 48 |
| 2018 Toyota RAV4 | Passenger side, under hood | 12V, Group 35 |
| 2018 Honda CR-V | Driver side, under hood | 12V, Group 51R |
Common Mistakes To Avoid
- Mixing up cable order can damage your car’s electronics.
- Never let clamps touch each other when connected.
- Don’t jump a battery that is leaking or smells strongly of sulfur.
- If the Jeep does not start after several tries, the battery may be dead or there could be a deeper issue.
When Not To Jump Start
Jump starting is not always the best solution. Avoid jumping if:
- The battery case is swollen or leaking.
- You hear clicking or see dim lights but the car won’t turn over—this may point to a starter problem instead.
- Your vehicle has a “stop/start” system and you are unsure if the battery is compatible. Some models need AGM batteries.
Special Tips For The 2018 Jeep Compass
- The Compass often uses an AGM (Absorbent Glass Mat) battery, which can handle jump starts but should not be deeply discharged often.
- Always check the owner’s manual for any specific warnings.
- If your Compass has a lot of electronics (navigation, start/stop, etc. ), be patient during the jump—sometimes it takes a few extra seconds for systems to reset.
- If you have to jump the car more than once in a week, get the battery and alternator checked.
A surprising tip: The metal grounding point for the black clamp on the Jeep is not always obvious. Look for a bold, unpainted bolt on the engine block for the safest connection.
How To Tell If Your Battery Needs Replacing
Jump starting is a quick fix, but sometimes your battery is at the end of its life. Signs you need a new battery:
- The car struggles to start even after a jump.
- Headlights are dim or flicker when starting.
- Battery is over 3 years old (most original Jeep batteries last about 3-4 years).
Here’s a simple table showing signs of a bad battery versus other problems:
| Symptom | Likely Cause | Fix |
|---|---|---|
| Clicking sound, no start | Weak battery | Jump start or replace battery |
| No sound, no lights | Dead battery or bad connection | Check terminals, try jump |
| Cranks but doesn’t start | Fuel or ignition issue | Seek mechanic |
What To Do After Jump Starting
Once your Jeep is running:
- Drive for at least 20-30 minutes to recharge.
- Visit a trusted mechanic or auto parts store for a battery test.
- Check for loose battery cables or corrosion and clean them if needed.
- If the battery dies again soon, consider replacing it.
Safety Reminders
- Wear eye protection and gloves if possible.
- Don’t smoke or use open flames around batteries.
- Keep children and pets away from the area.
- If you are unsure, it’s safer to call roadside assistance.
If you want to read more about jump starting cars, the Consumer Reports guide is a trusted resource.
Frequently Asked Questions
How Long Does It Take To Jump A 2018 Jeep Compass?
Most Jeeps start within 2-5 minutes after connecting jumper cables. If the battery is very weak, it can take up to 10 minutes.
Can I Jump Start My Jeep Compass With A Portable Jump Starter?
Yes. Most portable jump starters work well with the Compass. Make sure the device is rated for at least 400 amps.
Is It Safe To Jump A Jeep Compass With Another Suv Or Car?
It is safe if you follow the correct cable order. Both vehicles should have 12-volt systems.
What If My Jeep Still Won’t Start After Jump Starting?
Check that the cables were attached securely. If it still won’t start, the battery, starter, or alternator could be faulty.
Does Jumping My Car Damage Electronics?
When done properly, jump starting is safe. Modern cars have protection, but always avoid touching clamps together.
With these steps, you can confidently jump your 2018 Jeep Compass and avoid common mistakes. Take care, and remember—sometimes a new battery is the best solution.
