Parts for your 2017 Mazda Cx-5-Steering rack

2017 Mazda CX-5 Steering Rack: What It Does, When to Service, and Replacement Tips

For the 2017 Mazda CX-5 (KF series), a steering rack is absolutely relevant and fitted. Mazda’s own workshop manual for the CX-5 specifies a rack-and-pinion electric power steering (EPS) gear for this model. This is echoed by OEM parts catalogues used by dealers in Australia and New Zealand, as well as independent repair databases such as Autodata, Mitchell 1 and HaynesPro, all of which list a complete steering rack/gear assembly for the 2017 CX-5.

The steering rack in the 2017 CX-5 turns the driver’s steering wheel input into precise left-right movement of the front wheels through the inner and outer tie rods. Being an EPS design, assistance is provided by an electric motor on the rack, delivering lighter steering at parking speeds and a planted feel on the open road, without any hydraulic fluid or belts to maintain. It’s a key piece of the vehicle’s precise, confident driving character.

What to watch for as kilometres rack up:

• Knocking or clunking over bumps, or free play through the wheel
• Wandering, tramlining, or uneven tyre wear
• Notchy, heavy, or self-centring that feels off
• EPS warning light or steering-related fault codes

Good servicing practice on a CX-5 steering rack includes:

• Inspecting rack boots (gaiters) for tears and any grease escape
• Checking inner and outer tie rods for play and split dust seals
• Performing a wheel alignment if any steering or suspension components are replaced
• Road-testing for noise and on-centre feel, plus scanning the EPS for stored DTCs

If the rack needs replacing, a quality new or remanufactured unit is the go. There’s no power steering fluid to flush on this EPS setup, but the job typically requires disconnecting the battery, transferring inner tie rods as needed, torquing subframe and rack fasteners to spec, and then carrying out a wheel alignment. A steering angle sensor calibration/centering with a scan tool is often required so the EPS assistance maps correctly. Given the precision involved—and the need for an alignment—it’s smart to have a qualified technician handle the swap. After installation, keep an eye on tyre pressures and wear, avoid hard kerb strikes, and recheck alignment if the car starts pulling or the wheel sits off-centre.

Does the 2017 Mazda CX-5 use power steering fluid?

No. The 2017 CX-5 runs electric power steering on a rack-and-pinion gear, so there’s no hydraulic fluid to top up or leak. If the steering feels heavy or inconsistent, a scan for EPS fault codes and a mechanical inspection of the rack ends and boots is the first step.

Do you need a wheel alignment and steering angle reset after replacing the rack?

Yes to both. Any rack replacement or tie-rod work changes toe settings, so a proper alignment is essential. The EPS also benefits from a steering angle sensor calibration/centering via a scan tool to ensure assistance is balanced and the wheel sits straight.

Can the steering rack be repaired or reconditioned?

Often, yes. Specialist rebuilders can supply exchange EPS racks or repair units with worn internal components. Just confirm warranty terms and make sure the unit is compatible with the CX-5’s electronics. After fitting, perform alignment and steering angle calibration.