This procedure covers the removal and replacement of the engine bay fuse box (Integrated Power Module) on a 2012-2018 Jeep Wrangler with the 3.6L V6 engine.

Warnings

Tools required

Parts

• Integrated Power Module (IPM) / Fuse Box × 1 — 68105502AF or equivalent
• Fuse box cover × 1 — Use existing or order replacement if damaged

Preparation

1. Park vehicle on level ground and engage parking brake
2. Turn ignition to OFF position and remove key
3. Open hood and secure with prop rod
4. Photograph the fuse box cover label showing fuse locations for reference
5. Take detailed photos of all connector positions from multiple angles
6. Label each electrical connector with tape and marker noting its position
7. Disconnect negative battery terminal and secure cable away from battery post

Procedure

1. 1

   Remove fuse box cover
   Unlatch the fuse box cover located on the driver's side of the engine bay near the firewall. Press the release tabs on both sides and lift the cover straight up to remove. Inspect the cover for damage and set aside in a clean area.
2. 2

   Document and remove fuses and relays
   Using a fuse puller or needle-nose pliers, carefully remove all fuses and relays from the fuse box. Place them on a labeled diagram or in a parts organizer matching their original positions. This ensures correct reinstallation and prevents losing small components.
3. 3

   Disconnect large power cables
   Locate the large battery feed cables connected to the side of the fuse box. Remove the retaining nuts using a 13mm socket. There are typically 2-4 heavy gauge power cables. Support the cables as you remove the final fasteners to prevent strain on the wiring. Note the stacking order of any cable terminals sharing the same stud.
   ⚠These cables carry high current from the battery. Ensure battery is disconnected before proceeding and do not allow cable ends to contact metal surfaces.
   Torque spec

   Battery Terminal Bolts8 Nm (6 lb-ft)
4. 4

   Disconnect electrical connector harnesses
   Locate the main connector harnesses on the back of the fuse box (typically 3-4 large multi-pin connectors). Depress the red or gray locking tabs while pulling the connector bodies straight out. Do not pull on the wires themselves. Some connectors may have secondary locks that must be lifted before the main connector can be removed.
5. 5

   Remove ground strap connection
   Locate the ground strap bolt connecting the fuse box housing to the vehicle body, typically on the mounting bracket. Remove the bolt using a 10mm socket. Clean the contact surfaces on both the ground strap terminal and mounting point with a wire brush to remove corrosion.
   ℹ️A proper ground connection is critical for fuse box operation. Ensure all contact surfaces are clean and free of paint or corrosion.
   Torque spec

   Ground Strap Bolt16 Nm (12 lb-ft)
6. 6

   Remove mounting bracket bolts
   Locate the mounting bolts securing the fuse box to the vehicle body. There are typically 3-4 bolts around the perimeter of the mounting bracket. Remove these bolts using a 10mm socket. Support the fuse box as you remove the final bolt to prevent it from falling.
7. 7

   Remove fuse box assembly
   Carefully lift the fuse box assembly straight up and out of the engine bay. There may be clips or tabs at the base that require slight rotation or angling to clear. Avoid forcing the unit - verify all connectors and fasteners have been removed if resistance is encountered. Place the old fuse box on a clean work surface.
8. 8

   Inspect mounting area and transfer components
   Clean the mounting area on the vehicle body, removing any debris or corrosion. Inspect mounting brackets for damage. If the replacement fuse box does not include mounting brackets, transfer them from the old unit. Some models may require transferring the mounting rubber isolators.
9. 9

   Install new fuse box assembly
   Position the new fuse box into the mounting location, ensuring any alignment pins or tabs engage correctly with the vehicle body. Align all mounting holes before installing fasteners. Start all mounting bolts by hand to ensure proper thread engagement.
   Torque spec

   Mounting Bolts39 Nm (29 lb-ft)
10. 10

    Reconnect ground strap
    Attach the ground strap to the fuse box bracket and vehicle body. Ensure the contact surfaces cleaned earlier are making solid metal-to-metal contact. Install the ground strap bolt and torque to specification. Verify the strap is not twisted or kinked.
    Torque spec

    Ground Strap Bolt16 Nm (12 lb-ft)
11. 11

    Reconnect electrical connectors
    Reconnect all multi-pin electrical connectors to the back of the fuse box in the positions documented during disassembly. Push each connector firmly until it clicks into place. Ensure all locking tabs engage fully. Tug gently on each connector to verify it is properly seated.
12. 12

    Reconnect power cables
    Reinstall the large battery feed cables to the power studs on the side of the fuse box. Install cables in the same stacking order as documented during removal. Install retaining nuts and torque to specification. Ensure no wire strands are pinched outside the terminal rings.
    Torque spec

    Battery Terminal Bolts8 Nm (6 lb-ft)
13. 13

    Reinstall fuses and relays
    Using your documentation from removal, reinstall all fuses and relays into their correct positions in the new fuse box. Ensure each component is fully seated in its socket. Do not force components - resistance indicates incorrect positioning or wrong component.
14. 14

    Reconnect battery and test
    Reconnect the negative battery terminal and torque the terminal bolt to specification. Turn the ignition to the ON position (engine off) and verify the instrument cluster illuminates normally. Check for any warning lights that should not be present. Start the engine and verify normal operation.
    ⚠Monitor for smoke, burning smell, or unusual sounds when first reconnecting the battery. Immediately disconnect battery if any abnormalities occur.
    Torque spec

    Battery Terminal Bolts8 Nm (6 lb-ft)
15. 15

    Install fuse box cover and verify systems
    Install the fuse box cover, ensuring it latches securely on both sides. Test all electrical systems including lights, windows, HVAC, radio, and accessories to verify proper operation. Clear any diagnostic trouble codes that may have set during the repair using an OBD-II scanner.

Reassembly

1. Torque all fasteners to specifications using a calibrated torque wrench - over-tightening electrical terminals can damage threads and conductors
2. Ensure all electrical connectors are fully seated with locking tabs engaged to prevent intermittent connections
3. Verify the fuse box cover is properly latched to prevent water intrusion into electrical components
4. Some vehicles may require a battery registration or electrical system reset procedure using a scan tool after fuse box replacement

Verification

• Start the engine and verify it runs normally with no warning lights on the instrument cluster
• Test all electrical accessories including headlights, turn signals, wipers, power windows, radio, and HVAC blower
• Use a multimeter to verify proper voltage at key power distribution points (should read 12-14V with engine running)
• Scan for diagnostic trouble codes using an OBD-II scanner - address any newly set codes
• Verify all fuses and relays are properly seated by gently pressing on each one
• Test 4WD engagement if equipped to verify transfer case control circuit operation
• Road test the vehicle to confirm all systems function normally under operating conditions

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