🔧 Edge - Battery Replacement

On your Edge, the 12V battery powers starting and all the vehicle electronics. Replacing it is straightforward, but the order you disconnect/reconnect the cables matters, and you should reset the Battery Monitoring System (BMS) after installation for best charging and battery life.

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

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⚠️ Safety & Precautions

• ⚠️ Keep metal tools off both terminals at once to prevent a short.
• ⚠️ Remove the negative (-) cable first and install it last.
• ⚠️ Wear safety glasses and gloves; batteries can vent corrosive acid.
• ⚠️ Keep keys away from the vehicle while you work; don’t let the car “wake up.”
• ⚠️ Battery disconnect is required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 13mm socket
• 1/4" ratchet
• 3" extension (1/4")
• Torque wrench (in-lb and ft-lb capable)
• Battery terminal puller (specialty)
• Battery carrying strap (specialty)
• Battery terminal cleaning brush
• Memory saver (OBD-II) (specialty)
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 12V battery (H6/Group 48 size) - Qty: 1
• Battery terminal anti-corrosion felt washers - Qty: 2
• Battery terminal protector spray - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Open the hood and identify the battery and hold-down clamp.
• If you want to keep radio presets, use a memory saver (OBD-II) (a device that supplies low power to retain settings).
• Wait 5 minutes with the vehicle off before disconnecting the battery so modules go to sleep.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the battery

• Open the hood and locate the battery in the engine bay.
• If a cover or fresh-air duct blocks access, remove it using a 10mm socket and 1/4" ratchet.

Step 2: Disconnect the negative (-) battery cable

• Use a 10mm socket and 1/4" ratchet to loosen the negative terminal clamp nut.
• Lift the negative cable off the post and tuck it aside so it can’t spring back.
• If it’s stuck, use a battery terminal puller (specialty); don’t pry on the battery case.
• When reinstalling later: Torque to 44 in-lb (5 Nm).

Step 3: Disconnect the positive (+) battery cable

• Use a 10mm socket and 1/4" ratchet to loosen the positive terminal clamp nut.
• Remove the cable and position it so it can’t touch metal.
• When reinstalling later: Torque to 44 in-lb (5 Nm).

Step 4: Remove the battery hold-down

• Remove the hold-down bolt using a 13mm socket, extension, and 1/4" ratchet.
• Lift out the hold-down clamp and set it aside.
• When reinstalling later: Torque to 18 ft-lb (25 Nm).

Step 5: Remove the old battery

• Use a battery carrying strap (specialty) to lift the battery straight up and out.
• Keep the battery upright the whole time.

Step 6: Clean and prep the tray and terminals

• Use a battery terminal cleaning brush to clean the inside of both cable clamps.
• Install anti-corrosion felt washers on the new battery posts (one per post).
• Clean metal = better charging and starting.

Step 7: Install the new battery

• Set the new battery into the tray in the same orientation as the old one.
• Reinstall the hold-down clamp and bolt using a 13mm socket and torque wrench.
• Torque to 18 ft-lb (25 Nm).

Step 8: Reconnect cables (positive first)

• Reconnect the positive (+) cable first using a 10mm socket.
• Torque to 44 in-lb (5 Nm).
• Reconnect the negative (-) cable last using a 10mm socket.
• Torque to 44 in-lb (5 Nm).
• Apply battery terminal protector spray to help prevent corrosion.

Step 9: Reset the Battery Monitoring System (BMS)

• This tells your Edge a new battery is installed so charging strategy is correct.
• Method A (no scan tool): Key ON (engine OFF), then use the high-beam “flash-to-pass” 5 times, then press and release the brake pedal 3 times.
• Method B (alternate sequence used on some builds): Key ON (engine OFF), press and release the brake pedal 3 times, then flash-to-pass 5 times.
• Watch the battery/charging indicator on the cluster: it should flash to confirm the reset.

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✅ After Repair

• Start your Edge and confirm it cranks strongly and no warning lights remain.
• Check that the cables are tight by hand (they should not rotate on the posts).
• Relearn items: auto up/down windows may need initialization (run window fully down, then fully up, holding the switch an extra 2 seconds each end).
• If the check engine light or charging warnings appear, re-check terminal tightness and redo the BMS reset.

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💰 DIY vs Shop Cost

Shop Cost: $250-$450 (parts + labor)

DIY Cost: $180-$320 (parts only)

You Save: $70-$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.