Parts for your 2017 Toyota Mark x-Wheel bearings

2017 Toyota Mark X wheel bearings: purpose, care, and when to replace

Technical sources confirm the 2017 Toyota Mark X (GRX130 series) is fitted with wheel bearings at all four corners. Toyota’s service literature for the GRX130 covers front and rear hub/bearing units and their removal/installation procedures, and the Toyota Electronic Parts Catalogue lists both front axle hub and bearing assemblies and rear axle hub and bearing assemblies for this model. Major bearing manufacturers’ catalogues (e.g., NSK/NTN/Koyo/SKF) also publish direct-fit hub unit bearings for the GRX130. So wheel bearings are absolutely relevant on a 2017 Toyota Mark X.

On this Mark X, the wheel bearings are sealed hub units that let the wheels spin smoothly around the stub axles while carrying the vehicle’s load. They keep rolling friction low, support braking and cornering forces, and house the encoder signal for the ABS/vehicle stability systems. Because they’re sealed-for-life, they aren’t greased or adjusted during routine servicing, but they do need periodic checks for noise and play.

As part of regular servicing, it’s smart to road test the car and listen for a humming or growling that rises with speed and often changes when the steering is lightly loaded left or right. With the car safely lifted, a quick check for play at the 12-and-6 o’clock position, and a slow spin to feel for roughness, helps catch issues early. Any ABS warning in tandem with wheel-speed sensor faults can also point to a failing hub encoder.

When replacement is due, quality matters—OEM Toyota or Tier‑1 bearings from reputable brands suit Aussie and Kiwi roads best. The job typically involves removing the brake caliper and rotor, then unbolting or pressing out the hub/bearing assembly (design differs front to rear and by production run). A press or puller may be required, corrosion can make hubs stubborn, and correct torque on the axle nut and hub fasteners is crucial to bearing life. It’s a good time to clean the knuckle face, check the wheel-speed sensor, and ensure the ABS encoder ring faces the sensor correctly.

There’s no fixed kilometre interval for replacement, lifespan depends on driving conditions. Frequent water crossings, potholes, big kerb strikes, or oversized wheels can shorten bearing life. Keeping tyres correctly inflated, wheel nuts torqued to spec, and alignment within range all help bearings go the distance.

• Common symptoms: speed-related drone, play at the wheel, ABS light, heat at the hub, or uneven tyre wear.
• Service tip: inspect at each scheduled service, replace at the first signs of noise or looseness to protect hubs, discs, and tyres.

Popular questions

Do all 2017 Toyota Mark X models have front and rear wheel bearings, and are they serviceable?
Yes—every 2017 Mark X uses sealed hub unit bearings at each wheel. They’re not serviceable in the sense of repacking with grease or adjusting preload, when worn or noisy, the complete hub/bearing assembly is replaced.

What are the typical signs a Mark X wheel bearing is failing?
A steady humming or growling that gets louder with road speed is the classic clue, often changing when gently weaving or loading one side. You might also feel roughness when spinning the wheel by hand, notice play at 12-and-6 o’clock, see an ABS light triggered by a faulty encoder, or feel unusual heat at the hub after a drive.

Is it safe to drive with a noisy wheel bearing on a Mark X, and what does replacement involve?
It’s risky to keep driving—bearings can deteriorate quickly, affecting braking, tyre wear, and ABS operation. Replacement involves removing the brake hardware, then unbolting or pressing the hub/bearing from the knuckle, fitting the new unit squarely, and torquing all fasteners to factory spec. A wheel alignment check afterward is a good idea.