🔧 Highlander - Front Lower Ball Joint Replacement

This repair replaces the front lower ball joint on your Highlander. The lower ball joint connects the lower control arm to the steering knuckle and lets the wheel turn while the suspension moves up and down.

Difficulty Level: Intermediate | Estimated Time: 2-3 hours per side

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⚠️ Safety & Precautions

• ⚠️ Never work under your Highlander with only a jack holding it up. Always use jack stands.
• ⚠️ The front suspension is heavy and can move suddenly when separated. Keep your hands clear of pinch points.
• ⚠️ Do not hammer directly on the threaded ball joint stud. This can damage the new or old joint.
• ⚠️ Replace the cotter pin every time. A cotter pin is a small locking pin that keeps the castle nut from loosening.
• ⚠️ After replacing a ball joint, a front wheel alignment is strongly recommended.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Mechanic gloves
• 21mm lug nut socket
• 1/2-inch drive breaker bar
• 1/2-inch drive ratchet
• Torque wrench (10-200 ft-lbs)
• 17mm socket
• 19mm socket
• 22mm socket
• 17mm wrench
• 19mm wrench
• Needle-nose pliers
• Ball joint separator (specialty)
• Ball joint press kit (specialty)
• Hammer, 2 lb
• Pry bar, 18-inch
• Wire brush
• Paint marker

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front lower ball joint - Qty: 1 per side
• Front lower ball joint cotter pin - Qty: 1 per side
• Front lower ball joint castle nut - Qty: 1 per side
• Front lower ball joint snap ring - Qty: 1 per side
• Front lower ball joint dust boot - Qty: 1 per side, if not included

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📋 Before You Begin

• Park your Highlander on level ground.
• Set the parking brake and place wheel chocks behind the rear wheels.
• Loosen the front lug nuts slightly before lifting the vehicle.
• If replacing both sides, do one side at a time so the other side can be used as a visual reference.
• Assumption: this procedure covers the front lower ball joint on the stock front suspension.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Front Wheel

• Use a 21mm lug nut socket and 1/2-inch drive breaker bar to loosen the front lug nuts about one turn.
• Do not remove the lug nuts yet.
• Loosen while the tire is grounded.

Step 2: Lift and Support the Vehicle

• Use a floor jack at the front center jacking point to raise your Highlander.
• Place jack stands under the approved front side support points.
• Lower the vehicle gently onto the jack stands.
• Leave the floor jack lightly touching a solid support point as a backup.

Step 3: Remove the Wheel

• Use the 21mm lug nut socket and 1/2-inch drive ratchet to remove the loosened lug nuts.
• Remove the front wheel and set it flat under the vehicle as an extra safety backup.

Step 4: Inspect and Mark the Area

• Use a wire brush to clean dirt and rust around the lower ball joint, steering knuckle, and lower control arm.
• Use a paint marker to mark the current position of the ball joint hardware before removal.
• This mark helps you spot major movement, but it does not replace an alignment.

Step 5: Remove the Cotter Pin and Castle Nut

• Use needle-nose pliers to straighten and pull out the cotter pin from the lower ball joint stud.
• Use a 19mm socket and 1/2-inch drive ratchet to loosen and remove the castle nut from the ball joint stud.
• A castle nut has slots on top so the cotter pin can lock it in place.
• If the nut is tight, use the 1/2-inch drive breaker bar with the 19mm socket.

Step 6: Separate the Ball Joint from the Steering Knuckle

• Install the ball joint separator between the lower control arm and steering knuckle.
• A ball joint separator is a tool that safely pops the tapered stud loose without striking the threads.
• Use a 19mm wrench or matching tool drive on the separator screw to apply pressure until the joint releases.
• If needed, tap the side of the steering knuckle lightly with a 2 lb hammer while pressure is applied.
• Do not hit the ball joint stud directly.

Step 7: Support the Steering Knuckle

• Use the floor jack or a stable support to lightly hold the lower control arm area.
• Do not let the steering knuckle hang by the brake hose or ABS wire.
• Use a pry bar, 18-inch only if needed to gently control the control arm position.

Step 8: Remove the Ball Joint Retaining Hardware

• Use a 17mm socket and 1/2-inch drive ratchet to remove the lower ball joint mounting bolts if equipped with a bolt-on style joint.
• If your replacement style uses a pressed-in joint, use needle-nose pliers to remove the snap ring from the ball joint.
• A snap ring is a spring-steel retaining ring that locks the ball joint in its bore.
• Clean the mounting area with a wire brush.

Step 9: Press Out the Old Ball Joint

• Set up the ball joint press kit with the correct receiving cup and press adapter.
• Use a 22mm socket and 1/2-inch drive breaker bar to turn the press screw slowly.
• Press the old ball joint out straight.
• If it starts moving crooked, stop and reset the press cups.
• Straight pressure prevents control arm damage.

Step 10: Press In the New Ball Joint

• Position the new front lower ball joint squarely in the control arm bore.
• Use the ball joint press kit with the correct adapters to press the new joint in fully.
• Use the 22mm socket and 1/2-inch drive breaker bar to turn the press screw slowly.
• Make sure the joint seats completely against the control arm.
• Install the new snap ring with needle-nose pliers, if equipped.

Step 11: Reconnect the Ball Joint to the Steering Knuckle

• Guide the ball joint stud into the steering knuckle by hand.
• Use the floor jack carefully under the lower control arm if you need to raise it slightly.
• Install the new castle nut by hand first to avoid cross-threading.
• Use a 19mm socket and torque wrench to tighten the ball joint castle nut to Torque to 103 Nm (76 ft-lbs).
• If the cotter pin hole does not line up, tighten the nut slightly more until the hole lines up. Do not loosen it to align the hole.

Step 12: Install the New Cotter Pin

• Insert the new cotter pin through the castle nut and ball joint stud.
• Use needle-nose pliers to bend the ends around the nut.
• Make sure the cotter pin cannot slide out.

Step 13: Tighten Mounting Bolts if Equipped

• If your ball joint uses mounting bolts, install them by hand first.
• Use a 17mm socket and torque wrench to tighten the lower ball joint mounting bolts to Torque to 89 Nm (66 ft-lbs).
• If your joint is pressed-in only, skip this step.

Step 14: Reinstall the Wheel

• Put the wheel back on the hub.
• Install the lug nuts by hand.
• Use the 21mm lug nut socket and 1/2-inch drive ratchet to snug the lug nuts in a star pattern.

Step 15: Lower and Torque the Wheel

• Use the floor jack to lift the vehicle slightly off the jack stands.
• Remove the jack stands.
• Lower your Highlander until the tire touches the ground and cannot spin.
• Use the 21mm lug nut socket and torque wrench to tighten the lug nuts in a star pattern to Torque to 103 Nm (76 ft-lbs).

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✅ After Repair

• ✅ Turn the steering wheel left and right while parked. Listen for popping, scraping, or binding.
• ✅ Test-drive slowly first. Check for clunks, pulling, or steering wheel off-center.
• ✅ Recheck the lug nut torque after the first short drive using a 21mm lug nut socket and torque wrench.
• ✅ Schedule a front wheel alignment. Ball joint replacement can change suspension geometry.
• ✅ If the steering wheel is crooked or your Highlander pulls to one side, do not delay the alignment.

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💰 DIY vs Shop Cost

Shop Cost: $350-$650 per side, parts + labor

DIY Cost: $45-$140 per side, parts only

You Save: $250-$500 per side by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 hours per side.

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