🔧 Corolla - Shock Absorber/Strut Replacement

On your Corolla, the rear uses separate shock absorbers, while the front uses strut assemblies (a strut is a shock with a spring seat built in). Replacing worn shocks/struts restores ride control, braking stability, and prevents uneven tire wear.

Difficulty Level: Intermediate | Estimated Time: Rear: 1.5-3 hours | Front: 3-6 hours

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⚠️ Safety & Precautions

• ⚠️ Support the car on jack stands—never rely on a floor jack.
• ⚠️ If doing front struts: the coil spring is stored energy. Use a spring compressor (a tool that safely squeezes the spring) or use complete “quick strut” assemblies to avoid compressing springs.
• ⚠️ Keep hands clear of pinch points at the knuckle/strut area.
• ⚠️ After any front strut work, you should get a 4-wheel alignment.
• Battery disconnect is not required for this job.

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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) x2
• Wheel chocks x2
• Torque wrench (20–200 ft-lbs range)
• Breaker bar 1/2"
• Socket set: 10mm, 12mm, 14mm, 17mm, 19mm, 21mm
• Wrench set: 14mm, 17mm, 19mm
• Allen key: 6mm
• Trim clip tool
• Flathead screwdriver
• Pry bar
• Rubber mallet
• Penetrating oil
• Paint marker
• Spring compressor (specialty)
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear shock absorbers - Replace in pairs - Qty: 2
• Rear shock upper mounts/insulators - Qty: 2
• Front strut assemblies - Replace in pairs - Qty: 2
• Front upper strut mounts/bearings - Qty: 2
• Front bump stops and dust boots - Qty: 2
• New self-locking suspension nuts/bolts - As needed - Qty: 1 set

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels (for front work) or front wheels (for rear work).
• Use a 19mm socket to loosen lug nuts 1/2 turn before lifting.
• Spray penetrating oil on the lower shock/strut bolts and sway bar link nuts 10–15 minutes ahead of time.
• If doing fronts, plan an alignment afterward.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the car

• Use a floor jack at the correct lift point and raise the end you’re working on.
• Set the car down onto jack stands.
• Remove the wheels using a 19mm socket.

Step 2: Rear shocks (recommended to start here)

• Support the rear suspension arm lightly with the floor jack so it doesn’t drop when the shock comes off.
• Remove the lower shock bolt/nut using a 17mm socket and 17mm wrench.
• Open the trunk and pull back the side trunk liner using a trim clip tool to access the shock upper nuts.
• Remove the upper shock nuts using a 14mm socket, then remove the shock.
• Install the new shock with the upper mount/insulator in place.
• Snug the upper nuts with a 14mm socket, then install the lower bolt with a 17mm socket and 17mm wrench.
• With the suspension at normal ride height (raise the arm with the floor jack), torque fasteners:
  • Lower shock bolt: Torque to 103 Nm (76 ft-lbs)
  • Upper shock nuts: Torque to 19 Nm (14 ft-lbs)
• Repeat on the other side.

Step 3: Front struts (two paths: quick strut or spring compressor)

• On the strut body, remove the brake hose/ABS wire brackets using a 10mm socket or 12mm socket (varies by bracket).
• Remove the sway bar end link nut from the strut using a 17mm socket; hold the stud with a 6mm Allen key if it spins.
• Mark the strut-to-knuckle area with a paint marker to help keep alignment close.
• Remove the two large strut-to-knuckle bolts/nuts using a 19mm socket and breaker bar. Use a rubber mallet if needed to tap bolts free.
• Under the hood, remove the upper strut mount nuts using a 14mm socket, then remove the strut assembly.

Step 4: If using complete “quick strut” assemblies

• Place the new quick strut into the strut tower and start the top nuts by hand using a 14mm socket (do not fully tighten yet).
• Align the knuckle to the strut and install the two large bolts using a 19mm socket.
• Reconnect the sway bar link using a 17mm socket and 6mm Allen key (if needed).
• Reinstall brake hose/ABS brackets using a 10mm socket or 12mm socket.
• Torque fasteners:
  • Strut-to-knuckle bolts: Torque to 177 Nm (131 ft-lbs)
  • Upper strut mount nuts: Torque to 47 Nm (35 ft-lbs)
  • Sway bar end link nut: Torque to 74 Nm (55 ft-lbs)
• Repeat on the other side.

Step 5: If reusing springs (spring compressor path)

• Install a spring compressor (specialty) on opposite sides of the spring and tighten evenly until the spring is loose in the top mount.
• Remove the center shaft nut using a socket and appropriate counter-hold (varies by strut design).
• Transfer the spring, upper mount/bearing, dust boot, and bump stop onto the new strut in the same orientation.
• Reinstall the center shaft nut and remove the compressor slowly and evenly.
• Reinstall the strut into the car and torque fasteners to the same specs listed above.
• If unsure, choose quick struts instead.

Step 6: Reinstall wheels and lower the car

• Reinstall wheels using a 19mm socket.
• Lower the car and torque lug nuts in a star pattern using a torque wrench: Torque to 103 Nm (76 ft-lbs).

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✅ After Repair

• Road test at low speed first. Listen for clunks and verify the steering wheel is centered.
• Recheck for any loose brake hose/ABS wire brackets.
• Get a 4-wheel alignment after front strut replacement.
• After 50–100 miles, recheck lug nut torque with a torque wrench.

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💰 DIY vs Shop Cost

Shop Cost: $800-$1,800 (parts + labor, front + rear)

DIY Cost: $250-$900 (parts only, depending on quick struts and mounts)

You Save: $550-$900 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-6 hours.

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🎯 Ready to get started?

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