How to Replace Shock Absorbers on a 2017 Mazda CX-5
Step-by-step front strut and rear shock replacement with tools, torque specs, and safety tips for 2017, 2018
How to Replace Shock Absorbers on a 2017 Mazda CX-5
Step-by-step front strut and rear shock replacement with tools, torque specs, and safety tips for 2017, 2018
🔧 Shock Absorbers / Strut Assemblies - Replacement
Your CX-5 uses front strut assemblies and rear shock absorbers. The front repair is more involved because the coil spring is under heavy tension; the rear is simpler, but both sides should be replaced in pairs to keep handling balanced.
Difficulty Level: Advanced | Estimated Time: 3-5 hours
⚠️ Safety & Precautions
- Front coil springs are under high tension. Use a proper spring compressor only.
- Do not loosen the center strut nut unless the spring is safely compressed.
- Support the vehicle with jack stands on level ground. Never rely on a jack alone.
- After front suspension work, a wheel alignment is required.
- If your CX-5 has electronic parking brake engagement issues during wheel removal, make sure it is released before lifting.
🔧 Required Tools
You'll need the following tools for this repair:
- Floor jack (rated 3-ton minimum)
- Jack stands (rated for vehicle weight)
- Wheel chocks
- 21mm socket
- 19mm socket
- 17mm socket
- 14mm socket
- 12mm socket
- Ratchet
- Breaker bar
- Torque wrench
- Spring compressor (specialty)
- Allen key set
- Bungee cord or wire hanger
- Flat blade screwdriver
- Safety glasses
- Mechanic gloves
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Front strut assembly - Qty: 2
- Rear shock absorber - Qty: 2
- Front strut mount hardware - Qty: 2 sets
- Rear shock mounting hardware - Qty: 2 sets
- Stabilizer link nuts - Qty: 2 sets
📋 Before You Begin
- Park on level ground and set the parking brake.
- Loosen wheel lug nuts slightly before lifting.
- Replace shocks/struts in pairs on the same axle.
- If doing the front, plan for a wheel alignment when finished.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Lift and secure the vehicle
- Use a 21mm socket to loosen the lug nuts on the side you are starting with.
- Use a floor jack to raise the vehicle.
- Place it on jack stands and chock the opposite wheels.
- Remove the wheel.
Step 2: Remove the front strut assembly
- If doing the front, use a 14mm socket or 17mm socket to disconnect the stabilizer link from the strut.
- Use a 12mm socket to unclip any brake hose or ABS wire brackets attached to the strut.
- Use a 19mm socket to remove the two lower strut bolts at the knuckle.
- Support the knuckle as you remove the last bolt to keep it from dropping.
- Use a 14mm socket to remove the top strut mount nuts from under the hood.
- Lift the complete strut assembly out of the wheel well.
Step 3: Transfer the spring to the new front strut
- Use a spring compressor to compress the coil spring evenly on both sides.
- Use an Allen key and a socket to remove the center nut from the strut shaft.
- Remove the top mount, bearing, spring, and dust boot.
- Install the spring and mounts onto the new strut in the same orientation.
- Keep the spring ends seated correctly.
Step 4: Install the front strut assembly
- Position the assembly into the strut tower and start the top nuts by hand.
- Align the lower strut with the knuckle and install the two lower bolts.
- Use a torque wrench to tighten the lower strut bolts to 107 Nm (79 ft-lbs).
- Tighten the top strut mount nuts to 27 Nm (20 ft-lbs).
- Reconnect the stabilizer link and bracket hardware.
- Remove the spring compressor only after everything is seated correctly.
Step 5: Remove the rear shock absorber
- For the rear, remove the lower shock bolt with a 17mm socket.
- Open the rear hatch and remove the cargo side trim access if needed for the upper mount.
- Use a 14mm socket to remove the upper shock mount nut.
- Lower the shock out of the vehicle.
- If the suspension is loaded, support the control arm with the floor jack before removing the last bolt.
Step 6: Install the rear shock absorber
- Install the new shock in the same position as the old one.
- Start the upper nut by hand first.
- Install the lower bolt and snug it before final torque.
- Use a torque wrench to tighten the lower shock bolt to 80 Nm (59 ft-lbs).
- Tighten the upper shock mount nut to 25 Nm (18 ft-lbs).
Step 7: Reinstall wheels and lower the vehicle
- Reinstall the wheel and hand-tighten the lug nuts.
- Lower the vehicle with the floor jack.
- Use a torque wrench and 21mm socket to tighten the lug nuts to 108 Nm (80 ft-lbs).
✅ After Repair
- Test drive slowly at first and listen for clunks or rattles.
- Check that the vehicle sits level and tracks straight.
- Inspect all fasteners again after the first drive.
- Schedule a front-end alignment if you replaced the front struts.
💰 DIY vs Shop Cost
Shop Cost: $700-$1,400 (parts + labor)
DIY Cost: $220-$700 (parts only)
You Save: $480-$700 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-5 hours.
🎯 Ready to get started?
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