Parts for your 2003 Toyota Highlander-Wheel bearings

2003 Toyota Highlander (Kluger) Wheel Bearings — What They Do and When to Replace

Technical sources such as the Toyota service manual and OEM parts catalogues for the first‑generation Highlander/Kluger (2001–2007, XU20 platform) clearly show front and rear wheel hub and bearing assemblies. Major bearing manufacturers’ fitment guides for this model back that up. So wheel bearings are absolutely fitted to the 2003 Toyota Highlander (called Kluger in Australia and New Zealand).

On this vehicle, the wheel bearings sit inside the hub/knuckle assemblies and let the wheels spin freely while supporting the SUV’s weight and coping with cornering and braking loads. Depending on production spec and whether it’s 2WD or AWD, the design may be a press‑in cartridge bearing or an integrated hub-and-bearing unit. Either way, they’re sealed for life and not a periodic service item, but they do wear with kilometres, road grime, and water ingress.

Owners typically notice a failing bearing as a humming or droning that rises with road speed, often changing when the steering is gently loaded left or right. Other clues include vague steering feel, ABS warnings (if the tone ring/sensor is affected), or uneven tyre wear. Left too long, a worn bearing can overheat and damage the hub or knuckle.

Replacement is straightforward for a workshop with the right kit. For press‑in styles, the knuckle is removed and the old bearing is pressed out