This procedure covers the removal and replacement of the 12-volt battery on a 2016-2024 Hyundai Tucson with the 2.5L I4 AWD engine.

Warnings

Tools required

Parts

• 12V Battery (Group 124R or equivalent) × 1 — OEM: 37110-D3400 or equivalent 650+ CCA
• Battery terminal protectant spray × 1 — Use OEM specification

Preparation

1. Ensure the vehicle is parked on level ground with the engine off and keys removed from the vehicle
2. Open the hood and prop it securely
3. If using a memory saver, connect it to the OBD-II port or cigarette lighter before disconnecting the battery
4. Locate the battery in the engine compartment on the driver's side

Procedure

1. 1

   Disconnect the negative battery terminal
   Using a 10mm wrench, loosen the negative (-) battery terminal bolt. Remove the cable from the terminal and secure it away from the battery post to prevent accidental contact. The negative terminal is typically black and marked with a minus sign.
2. 2

   Disconnect the positive battery terminal
   Using a 10mm wrench, loosen the positive (+) battery terminal bolt. Remove the cable from the terminal. The positive terminal is typically red and may have a protective cover that needs to be lifted first.
3. 3

   Remove the battery hold-down bracket
   Locate the battery hold-down bracket at the base of the battery. Using a 12mm socket, remove the hold-down bolt that secures the bracket across the top of the battery. Lift the bracket away and set aside.
4. 4

   Remove the old battery
   Carefully lift the battery straight up and out of the battery tray. Batteries are heavy (typically 35-45 lbs) and should be lifted with proper technique to avoid injury. Inspect the battery tray for corrosion or debris.
5. 5

   Clean the battery tray and terminals
   Use a wire brush or battery terminal cleaner to remove any corrosion from the battery tray and cable terminals. Wipe the tray clean with a damp cloth. Ensure the tray is dry before installing the new battery.
6. 6

   Install the new battery
   Place the new battery into the battery tray, ensuring the positive and negative terminals are positioned in the correct orientation (positive toward the front-right). The battery should sit flat and stable in the tray.
7. 7

   Install the battery hold-down bracket
   Position the hold-down bracket over the battery and align the bolt hole. Install the hold-down bolt and tighten to specification using a torque wrench. Ensure the battery is secure and cannot move.
   Torque spec

   Battery Hold-Down Bolt8 Nm (6 lb-ft)
8. 8

   Connect the positive battery terminal
   Place the positive (+) cable terminal onto the positive battery post. Ensure it is fully seated. Install the terminal bolt and tighten to specification using a torque wrench. Do not overtighten as terminal bolts are made of soft lead alloy and can strip easily.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
9. 9

   Connect the negative battery terminal
   Place the negative (-) cable terminal onto the negative battery post. Ensure it is fully seated. Install the terminal bolt and tighten to specification using a torque wrench. Do not overtighten.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
10. 10

    Apply terminal protection
    Apply a light coating of dielectric grease or battery terminal protectant spray to both terminals to prevent future corrosion. Replace any terminal covers that were removed.

Reassembly

1. Ensure both battery terminals are tight and secure with no movement
2. Verify the hold-down bracket is properly torqued and the battery cannot shift
3. Remove memory saver if used

Verification

• Turn the ignition to the ON position and verify dashboard lights illuminate normally
• Start the engine and confirm it cranks and starts without hesitation
• Check that all electrical accessories function properly (radio, windows, lights, climate control)
• Verify there are no warning lights related to battery or charging system on the dashboard
• Perform window auto-up/down relearn procedure if necessary: fully lower each window, then fully raise and hold the switch for 2 seconds
• Reset clock and radio presets as needed

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