Parts for your 2019 Toyota Mark x-Steering rack

2019 Toyota Mark X steering rack: what it does and how to look after it

Technical sources confirm the 2019 Toyota Mark X (GRX130/135 series) is fitted with a rack-and-pinion steering gear, commonly called a steering rack. The Toyota Repair Manual for the Mark X (Steering – Steering Gear section) specifies a rack‑and‑pinion layout with power assist, and Toyota’s Electronic Parts Catalogue lists a Steering Gear Assembly for GRX130/135 models. So yes, a steering rack is used on the 2019 Toyota Mark X.

On this model, the steering rack converts the driver’s steering wheel input into precise left–right movement through the inner and outer tie rods, turning the front wheels with accuracy and feel. Most 2019 Mark X variants use electric power steering (EPS) assistance paired with a rack‑and‑pinion gear, delivering light effort at parking speeds and stable weighting on the open road. The design keeps play to a minimum and helps the sedan feel planted and responsive, whether commuting or touring.

As part of routine servicing, the steering rack deserves a quick once‑over. Boots (bellows) should be intact with no splits, any tear can let grit in and chew out the rack or inner tie rods. Free play at the wheel, clunks over bumps, wandering, or uneven front tyre wear can point to wear in the rack, bushes, or tie rod ends. With EPS there’s no fluid to change, but any versions with hydraulic assist should be checked for leaks around lines, pump, and the rack seals.

Replacement is considered when there’s noticeable play, persistent knocking, binding through the steering range, fluid leakage on hydraulic setups, water ingress from split boots, or post‑impact damage. A reconditioned or new OEM rack is typically installed with fresh inner and outer tie rods and new boots and clamps. It’s smart to renew rack bushes if they’re soft or cracked.

After rack work, a precise front wheel alignment is essential. For EPS models, a steering angle sensor reset and EPS zero‑point/torque calibration should be carried out with the correct scan tool so the assistance is centred and the car tracks straight. If the vehicle has driver‑assist features that rely on steering angle, those calibrations may also be required. Beyond that, owners help the rack last by keeping tyres correctly inflated, avoiding solid kerb hits, and getting alignment checked after pothole knocks or suspension repairs.

Inspection every 10,000–15,000 km alongside regular servicing keeps the 2019 Mark X steering smooth, quiet, and confidence‑inspiring.

Popular questions about the 2019 Toyota Mark X steering rack

What are the signs a 2019 Mark X steering rack needs replacement?

A dull knock or clunk felt through the wheel over small bumps can indicate internal wear or loose rack mounts.

Noticeable free play at centre where the wheel moves but the car doesn’t respond points to gear or tie rod wear.

Wandering on the motorway or constant micro‑corrections can suggest excessive internal clearance.

Greasy buildup or fluid on the rack body or boots (hydraulic systems) means leaking seals.

Split or oily rack boots allow dirt in and will quickly damage the rack and inner tie rods.

Heavy or sticky steering at certain angles hints at rack tooth or bush binding.

Uneven or rapid front tyre wear may follow a worn rack or loose inner tie rods affecting toe.

A crooked steering wheel after straight‑ahead driving can be a symptom of internal slip or misalignment.

EPS warning light or assistance that pulses or cuts out may require rack or torque‑sensor diagnosis.

Clicking when turning lock‑to‑lock might be internal or related to inner tie rods connected to the rack.

After a kerb strike or crash, visible rack housing damage or bent tie rods warrant replacement.

Failed alignment that won’t hold spec can signal an internal steering rack fault.

How much does a 2019 Mark X steering rack replacement cost in AU/NZ?

Parts range widely: a quality reconditioned unit is commonly cheaper than new OEM.

In Australia, expect roughly AUD ,1,200–,2,500 fitted, depending on parts choice and workshop rates.

In New Zealand, broad ranges sit around NZD ,1,400–,3,000 fitted under typical scenarios.

EPS racks can cost more than hydraulic types due to integrated sensors or motors.

Inner and outer tie rods, boots, and clamps are often replaced at the same time and add to parts cost.

Labour typically runs 3–6 hours, model‑spec and corrosion permitting.

Wheel alignment is essential afterwards and usually billed separately.

EPS zero‑point/torque calibration with a scan tool may add a small diagnostic fee.

Track condition, seized fasteners, or subframe movement can extend labour time.

Warranty on reconditioned racks varies, reputable suppliers offer 12–24 months.

Insurance may cover impact damage, wear and tear is usually owner‑paid.

Getting a written quote that lists calibration and alignment avoids surprises.