Jump-Starting Procedure
1. Connect the positive (+) end of the jumper cable to the remote positive (+) post of the discharged vehicle.
2. Connect the opposite end of the positive (+) jumper cable to the positive (+) post of the booster battery.
3. Connect the negative end (-) of the jumper cable to the negative (-) post of the booster battery.
4. Connect the opposite end of the negative (-) jumper cable to the remote negative (-) post of the vehicle with the discharged battery.
5. Start the engine in the vehicle that has the booster battery, let the engine idle a few minutes, and then start the engine in the vehicle with the discharged battery.
Once the engine is started, remove the jumper cables in the reverse sequence: 6. Disconnect the negative (-) jumper cable from the remote negative (-) post of the discharged vehicle.
7. Disconnect the negative end (-) of the jumper cable from the negative (-) post of the booster battery.
8. Disconnect the opposite end of the positive (+) jumper cable from the positive (+) post of the booster battery.
9. Disconnect the positive (+) end of the jumper cable from the remote positive (+) post of the discharged vehicle.
10. Reinstall the protective cover over the remote positive (+) battery post of the discharged vehicle.
If frequent jump-starting is required to start your vehicle you should have the battery and charging system inspected at your authorized dealer.
Eventually, if plugged in long enough, the vehicle’s battery will discharge sufficiently to degrade battery life and/or prevent the engine from starting.
Test yourself
A quick Jeep Grand Cherokee quiz: every answer comes with an explanation and a link to the manual page.