Parts for your 2006 Toyota Highlander-Wheel hubs

2006 Toyota Highlander Wheel Hubs: What They Do and When to Replace

Based on Toyota’s factory repair information (TIS), the Toyota Electronic Parts Catalogue (EPC), and major OEM supplier catalogues (e.g., NSK/SKF/Timken), the 2006 Toyota Highlander (XU20) is fitted with wheel hubs and sealed hub bearings on both front and rear corners. Front hubs use a pressed-in, double-row ball bearing in the steering knuckle with a hub flange, while the rear typically uses a bolt-on hub and bearing unit. ABS wheel-speed encoders are integrated into these assemblies, confirming wheel hubs are absolutely relevant on this model.

The wheel hub assembly is the bit that your wheel and brake rotor sit on. It carries the wheel studs, keeps the rotor true, and allows the wheel to spin smoothly on a precisely loaded bearing. On driven wheels, the hub also splines to the CV shaft. Because the Highlander’s hubs are sealed, they’re maintenance-free in normal use, supporting quiet, low-friction rotation while keeping grit and water out. The integrated encoder ring lets the ABS and stability systems know exactly how fast each wheel is turning.

There’s no routine greasing or bearing preload to set—these hubs are designed as sealed-for-life. During regular servicing, it’s smart to check for:

• A humming or growling that rises with speed and changes when cornering
• Free play at the wheel when rocked at 12 and 6 o’clock
• ABS light, intermittent speed sensor faults, or pulsing at low speed
• Heat or roughness at the hub after a road test, and any damaged or stretched wheel studs

Replacement tips for a 2006 Highlander: the front bearing is pressed into the knuckle and the hub flange is pressed into the bearing, so a workshop press and proper drifts are required. It’s best practice to install a new snap ring and a new axle (stake) nut and to torque all fasteners to the factory spec from Toyota TIS. If the knuckle is removed, a wheel alignment check is a good idea. The rear unit is typically a bolt-on hub and bearing assembly, expect to remove the caliper and rotor, then the four hub bolts from the back of the knuckle. AWD models require disconnecting the rear axle from the hub spline. Take care with the wheel-speed sensor and cable routing. Quality, name-brand hubs pay off with quieter operation and longer life. While not mandatory, replacing hubs in pairs can help keep road noise consistent left-to-right.

As part of regular maintenance, have the hubs listened to during tyre rotations and road tests—say, every 10,000–15,000 kilometres. Catching early noise or play will save tyres and keep braking and ABS performance spot-on.

Does the 2006 Highlander use wheel hubs or separate bearings?

It uses a hub-and-bearing arrangement on all four corners. The fronts are press-in bearings with a separate hub flange in the knuckle, the rears are typically bolt-on hub units. Both incorporate an ABS encoder, so correct fitment for ABS is essential.

What are the common signs a Highlander hub is failing?

A steady humming that changes with speed or load, play at the wheel, ABS warnings, and heat at the hub area are the big giveaways. If the noise gets louder when turning one way, it’s often the opposite side hub that’s failing. Uneven tyre wear can also show up if the bearing has excess play.

Can a DIYer replace the hubs at home?

Rear bolt-on hubs are within reach for a competent DIYer with decent tools and a torque wrench. The fronts need a press and proper support to avoid damaging the new bearing or knuckle. If a press isn’t available, many owners outsource the front knuckle/bearing press work to a workshop and handle the R&,R themselves. Always follow Toyota torque specs and protect the ABS sensor.