🔧 Grand Cherokee - Battery Replacement

You’ll remove the old 12V battery and install a new one with clean, tight connections. A weak or failing battery can cause slow cranking, warning lights, and no-start issues.

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

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⚠️ Safety & Precautions

• ⚠️ Turn ignition OFF, remove key, and wait 2 minutes before disconnecting the battery.
• ⚠️ Disconnect the negative (−) terminal first and reconnect it last to reduce short-circuit risk.
• ⚠️ Do not allow a tool to touch both the battery terminal and metal body at the same time.
• ⚠️ Batteries are heavy and contain acid—wear gloves and safety glasses.
• ⚠️ If your battery is under the passenger seat, move the seat with power BEFORE disconnecting the battery.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 13mm socket
• Ratchet (3/8")
• 6" extension (3/8")
• Trim removal tool
• Torque wrench (inch-pound)
• Battery terminal cleaning brush
• Shop rags
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 12V battery (correct group size for your Grand Cherokee) - Qty: 1
• Battery terminal anti-corrosion spray or grease - Qty: 1
• Battery terminal felt washers - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• If your battery is under the passenger seat: use the seat switch to move the passenger seat all the way back and all the way up for access before disconnecting power.
• Open a window or keep a door unlocked so you don’t lock yourself out during the swap.
• Have your radio presets/clock handy—some settings may reset.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the battery (two possible locations)

• Check the passenger-side front seat area first (common): use a trim removal tool to lift/remove the battery access cover.
• If you do not see a battery under the passenger seat, check under the hood: open the hood and look at the passenger-side of the engine bay.

Step 2: Remove covers/hold-down access

• If under-seat: use a trim removal tool to release any cover clips, then move the cover out of the way.
• If under-hood: remove any plastic shield/cover over the battery using a 10mm socket and ratchet (3/8") if equipped.

Step 3: Disconnect the negative (−) terminal FIRST

• Use a 10mm socket and ratchet (3/8") to loosen the negative terminal clamp nut.
• Twist and lift the clamp off the battery post, then tuck it aside so it cannot spring back.
• Negative is usually black and marked “−”.
• Torque on install: 5 N·m (44 in-lb)

Step 4: Disconnect the positive (+) terminal

• Use a 10mm socket and ratchet (3/8") to loosen the positive terminal clamp nut.
• Remove the clamp and position it so it cannot touch metal.
• Positive is usually red and marked “+”.
• Torque on install: 5 N·m (44 in-lb)

Step 5: Remove the battery hold-down

• Use a 13mm socket, 6" extension (3/8"), and ratchet (3/8") to remove the battery hold-down bolt(s)/wedge clamp at the base of the battery.
• Lift out the hold-down and set it aside.
• Torque on install: 9 N·m (80 in-lb)

Step 6: Remove the old battery

• Grab the battery using the built-in handle(s) and lift it straight up and out.
• Set it on the ground on a flat surface (not on carpet).

Step 7: Clean and prep the connections

• Use a battery terminal cleaning brush to clean the inside of both cable clamps until shiny.
• Wipe with shop rags.
• Install battery terminal felt washers if you’re using them, then apply a light coat of battery terminal anti-corrosion spray or grease.
• Clean metal helps prevent future no-starts.

Step 8: Install the new battery

• Set the new battery into the tray in the same orientation as the old one (positive and negative posts on the same sides as before).
• Reinstall the hold-down using a 13mm socket, 6" extension (3/8"), and ratchet (3/8").
• Torque to 9 N·m (80 in-lb)

Step 9: Reconnect terminals (positive FIRST, negative LAST)

• Install the positive (+) clamp first and tighten using a 10mm socket and ratchet (3/8").
• Torque to 5 N·m (44 in-lb)
• Install the negative (−) clamp last and tighten using a 10mm socket and ratchet (3/8").
• Torque to 5 N·m (44 in-lb)

Step 10: Reinstall covers

• Reinstall the battery cover/shield using the trim removal tool and/or 10mm socket as needed.

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✅ After Repair

• Start your Grand Cherokee and confirm it cranks strongly.
• Check that headlights and interior lights look normal (not dim or flickering).
• Set the clock and re-save radio presets if they reset.
• If any warning lights appear, shut off, re-check terminal tightness and battery orientation, then restart.

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💰 DIY vs Shop Cost

Shop Cost: $220-$450 (parts + labor)

DIY Cost: $140-$320 (parts only)

You Save: $80-$130 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.