Parts for your 2018 Toyota Vitz|yaris-Steering rack

2018 Toyota Vitz/Yaris Steering Rack: What it does and how to look after it

From Toyota’s factory repair information and global parts catalogues for the 2018 Vitz/Yaris (NSP/NCP130 series), this model is fitted with a rack-and-pinion steering gear—commonly called a steering rack—paired with electric power steering (EPS). There’s no old-school steering box on this car. Workshop manuals and EPC listings show a conventional rack with inner and outer tie rods, plus EPS assistance (usually column-mounted) to keep steering light and precise.

The steering rack’s job is straightforward: it turns the rotary input from the steering wheel into smooth side-to-side movement that points the front wheels where they need to go. It works with the tie rods and knuckles to keep the car tracking straight, gripping confidently through corners, and returning to centre neatly. On EPS-equipped Vitz/Yaris variants there’s no power-steering fluid to top up, but the rack, boots, and tie rods still do the heavy lifting.

As part of regular servicing, it’s smart to keep an eye on the steering rack and related bits. A quick look under the front shows the bellows boots on each end—if they’re torn, water and grit can get in and chew out the rack or inner tie rods. Any free play at the wheels, tramlining, or uneven tyre wear can point to a worn inner or outer tie rod. Clunks over bumps, a notchy feel, or the wheel not self-centring well are also worth investigating. A technician should check for play, bush wear, boot condition, and tie-rod articulation, and confirm torque settings to factory specs.

• Inspect rack boots and tie rods at each service or at least every 20,000–30,000 kilometres.
• Replace worn inner/outer tie rods promptly to protect the rack.
• After any rack or tie-rod work, get a proper wheel alignment.
• On EPS models, perform steering angle/EPS calibration with a scan tool after replacement or alignment.

When a rack is bent from a curb strike, has excessive internal play, or the boots have let contamination in, replacement is the safe bet. Use quality parts, new mounting hardware and boots, and don’t rotate the steering wheel with the rack disconnected—protect the clock spring. Finish with alignment and a road test to confirm straight-ahead feel and no noises. Look after the steering rack and the Vitz/Yaris will steer sweetly for years.

FAQs

Does the 2018 Toyota Vitz/Yaris use a steering rack or a steering box?
It uses a rack-and-pinion steering rack with electric power steering. There’s no steering box on this model, and that’s confirmed across Toyota workshop information and parts catalogues for the NSP/NCP130 series.

What are common signs the steering rack or tie rods need attention?
Free play at the steering wheel, clunks over bumps, wandering, or uneven tyre wear usually point to worn inner or outer tie rods, bushings, or internal rack wear. Torn rack boots are a red flag—grit and water quickly damage the rack, so sort those early.

Is a wheel alignment and calibration needed after steering work?
Yes. After replacing the rack or tie rods, a full alignment is essential. On EPS-equipped cars, a steering angle/EPS calibration with a scan tool helps restore a straight wheel and consistent steering assist.