2021 Jeep Grand Cherokee Owner’s Manual — JUMP STARTING

If your vehicle has a discharged battery, it can be jump started using a set of jumper cables and a battery in another vehicle, or by using a portable battery booster pack. Jump starting can be dangerous if done improperly, so please follow the procedures in this section carefully.

When using a portable battery booster pack, follow the manufacturer's operating instruc- tions and precautions.

PREPARATIONS FOR JUMP START

The battery in your vehicle is located under the passenger's front seat. There are remote terminals located under the hood to assist in jump starting.

Jump Starting Locations

(+) Remote Positive Post (Covered With Protective Cap)

(-) Remote Negative Post

Be sure that the disconnected cable ends do not touch each other, for either vehicle, until properly connected for jump starting.

See below steps to prepare for jump starting:

Apply the parking brake, shift the automatic transmission into PARK (P) and turn the ignition OFF.

Turn off the heater, radio, and all electrical accessories.

Pull upward and remove the protective cover over the remote positive (+) battery post.

If using another vehicle to jump start the battery, park the vehicle within the jumper cables reach, apply the parking brake and

make sure the ignition is OFF. JUMP STARTING PROCEDURE

Make sure at all times that unused ends of jumper cables are not contacting each other or either vehicle while making connections.

Jumper Cable Connections

Connect the positive (+) end of the jumper cable to the remote positive (+) post of the discharged vehicle.

Connect the opposite end of the positive (+) jumper cable to the positive (+) post of the booster battery.

Connect the negative end (-) of the jumper cable to the negative (-) post of the booster battery.

Connect the opposite end of the negative (-) jumper cable to a good engine ground. A “ground” is an exposed metallic/unpainted part of the engine, frame or chassis, such as

an accessory bracket or large bolt. The ground must be away from the battery and the fuel injection system.

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, follow the disconnecting procedure below.

Disconnect the negative (-) end of the jumper cable from the remote negative (-) post of the discharged vehicle.

Disconnect the opposite end of the negative (-) jumper cable from the negative (-) post of the booster battery.

Disconnect the positive (+) end of the jumper cable from the positive (+) post of the booster battery.

Disconnect the opposite end of the positive (+) jumper cable from the remote positive (+) post of the discharged vehicle.

Reinstall the protective cover over the remote positive (+) post of the discharged vehicle.

If frequent jump starting is required to start your vehicle have the battery and charging system tested at an authorized dealer.