Two problems related to battery cable have been reported for the 2003 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Jeep Grand Cherokee based on all problems reported for the 2003 Grand Cherokee.
Driving along, car simply cuts off. No warning. Solution is to disconnect battery cables, wait about 5 minutes, reconnect and restart. Dealers are baffled. No known reliable fix. Very dangerous if on bridge, interstate or tunnel. Especially a problem at night, as "fix" involves shutting off all lights including hazard warning lights.
Strange electrical issues start happening. My car wouldn't start and couldn't be jump started. Had to be towed to the dealer. The problem was a corroded positive battery cable lead. The battery cable assembly had to be replaced at a cost of $300. 00. The car is two years old and I live in colorado. I fine it difficult to believe that a battery cable could corrode to the point of having to be replaced in two years. I believe that it is a defective cable not corrosion that caused my problem.