Jeep Cherokee (XJ): Heating and air conditioning

Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Heating and air conditioning

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Vehicle storage
If you are leaving your vehicle dormant for more than 21 days you may want to take steps to protect your battery. You may: Disconnect the negative cable from the battery. Anytime you store your vehicle, or keep it out of service (i.e. vacation) for two weeks or more, run the air condit ...