This procedure covers the removal and replacement of the negative battery cable on a 2016-2024 Hyundai Tucson with 2.5L I4 AWD engine, including disconnection from the battery and all ground points.

Warnings

Tools required

Parts

• Negative battery cable × 1 — Use OEM specification

Preparation

1. Ensure the ignition is off and the key is removed from the vehicle
2. Allow the vehicle to sit for at least 5 minutes to allow airbag system capacitors to discharge
3. Locate the battery in the engine compartment on the driver's side
4. Identify all ground points where the negative cable connects (battery terminal, chassis ground near battery tray, and body ground points)

Procedure

1. 1

   Disconnect negative terminal from battery
   Using a 10mm socket, loosen the negative battery terminal bolt. Remove the cable from the battery post and secure it away from the terminal to prevent accidental contact. Clean the terminal post with a wire brush if corrosion is present.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
2. 2

   Remove primary chassis ground connection
   Locate the primary ground strap connection point near the battery tray on the driver's side fender. Using a 12mm socket, remove the ground strap bolt securing the negative cable to the chassis. Note the routing and position of any additional ground straps at this location.
   Torque spec

   Ground Strap Bolts12 Nm (9 lb-ft)
3. 3

   Remove engine block ground connection
   Trace the negative cable to the engine block ground point, typically located on the driver's side of the engine. Using a 12mm socket, remove the ground cable bolt securing the cable to the engine block. Keep track of any washers or spacers.
   ⚠If the engine was recently running, allow it to cool before working near the engine block to avoid burns.
   Torque spec

   Ground Cable Bolt14 Nm (10 lb-ft)
4. 4

   Remove any additional ground connections
   Follow the negative cable along its entire length and remove any additional ground connections to the body or frame. Note the exact routing and connection points for reinstallation.
   Torque spec

   Ground Bolt14 Nm (10 lb-ft)
5. 5

   Remove cable from routing clips
   Carefully release the negative cable from any routing clips or ties that secure it to the vehicle body or other components. Take note of the cable routing path for proper reinstallation.
   ℹ️Take photos of the cable routing before removal to ensure correct reinstallation path.
6. 6

   Clean all connection points
   Using a wire brush and battery terminal cleaner, thoroughly clean the battery post, cable terminals, and all ground connection surfaces. Remove all corrosion, dirt, and oxidation. Wipe clean with a shop towel.
   ℹ️Clean metal-to-metal contact is critical for proper electrical grounding. Any corrosion or contamination will cause electrical issues.
7. 7

   Install new negative cable
   Route the new negative cable along the same path as the original, ensuring it does not contact any moving parts or sharp edges. Secure the cable in all original routing clips.
   ⚠Ensure the cable does not contact exhaust components, drive belts, or other moving parts that could damage the cable over time.
8. 8

   Connect engine block ground
   Install the ground cable bolt to the engine block ground point, ensuring the terminal is seated flat against the clean mounting surface. Torque to specification using a torque wrench.
   Torque spec

   Ground Cable Bolt14 Nm (10 lb-ft)
9. 9

   Connect chassis ground points
   Install the ground strap bolts at the chassis ground point near the battery tray and any other body ground locations. Ensure all terminals are seated flat against clean metal surfaces. Torque all ground strap bolts to specification.
   Torque spec

   Ground Strap Bolts12 Nm (9 lb-ft)
10. 10

    Connect negative terminal to battery
    Apply a light coat of dielectric grease to the battery post if desired. Place the negative cable terminal onto the battery post and tighten the terminal bolt to specification using a torque wrench. Do not overtighten as this can damage the terminal or post.
    ⚠Overtightening battery terminal bolts can crack the terminal or damage the battery post, leading to poor connection or battery failure.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Double-check that all ground connections are tight and properly torqued
2. Verify the cable routing does not interfere with any moving components
3. Ensure the negative cable is properly secured in all routing clips

Verification

• Turn the ignition to the ON position (do not start) and verify that all dashboard lights illuminate normally
• Start the engine and verify proper operation with no warning lights
• Test electrical systems including headlights, power windows, and radio to confirm proper ground connections
• Reset power window auto-up/down function by fully opening and closing each window while holding the switch
• Check for any abnormal electrical behavior or warning lights on the instrument cluster

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