Parts for your 2001 Toyota Crown-Control arms

2001 Toyota Crown control arms — purpose, maintenance, and replacement

Technical sources including the Toyota Electronic Parts Catalogue (EPC) for S170-series models (e.g., JZS171/JZS173/UZS171), the Toyota Repair Manual, and the New Car Features guide confirm that the 2001 Toyota Crown runs a front double‑wishbone setup with distinct upper and lower control arms, plus a multi‑link rear suspension that also employs multiple control arms. So yes—control arms are absolutely fitted and central to how this luxury saloon rides and steers.

On this Crown, the front control arms keep the wheel hubs aligned through steering, braking, and bumps, maintaining proper camber and caster so the tyres stay planted and wear evenly. The rear multi‑link uses several arms to control toe and camber changes, giving that calm, composed ride the Crown is known for. Each arm pivots on rubber (or sometimes hydraulic) bushes and, on many fronts, a ball joint—these are the wear points that eventually need attention.

Good practice for servicing includes regular checks of control arm bushes and ball joints, especially if the car sees rough roads or carries weight. There’s no fixed replacement interval, but an inspection every 10,000–20,000 kilometres or annually is sensible. Any tearing, cracking, perishing, or play means it’s time to replace the affected bush or the whole arm, depending on design and tooling available.

• Common symptoms of worn control arms on a Crown:
  • Clunks over bumps, steering shimmy, or a loose on‑centre feel
  • Uneven or accelerated tyre wear and tramlining
  • Pulling or instability under braking

When replacing, many owners choose complete arms for ease and to renew the ball joint at the same time (where integrated). Press‑in bushes can be cost‑effective but need the right tools and technique. Always tighten control arm bolts at normal ride height to avoid preloading the bushes, and book a four‑wheel alignment straight after—this Crown’s geometry is precise and rewards correct setup with quieter tyres and a silkier ride. If chasing sharper response, polyurethane bushes can work, but be aware they may increase NVH compared with quality OEM‑style rubber.

For best results, replace arms in axle pairs (left/right), use reputable parts, torque to spec from the Toyota Repair Manual, and recheck fasteners and tyre wear after a few hundred kilometres. That keeps the S170 Crown feeling tight, quiet, and confident—exactly as it should.

Popular questions about 2001 Toyota Crown control arms

How many control arms does a 2001 Toyota Crown have?

The S170 Crown has an upper and a lower front arm on each side (two per side at the front). The rear is a multi‑link design with several arms per side controlling toe and camber. Exact counts vary by grade and market, so checking the Toyota EPC by VIN is the most accurate way to confirm the full set.

Do I need a wheel alignment after replacing control arms?

Yes. Any time a control arm, bush, or ball joint is changed, the geometry shifts. A proper four‑wheel alignment is recommended straight after installation to set camber, caster, and toe so the Crown tracks straight and the tyres wear evenly.

Should I replace just the bushes or the complete control arm?

It depends on condition and tooling. If the arm is straight and the ball joint is healthy, quality press‑in bushes can be a smart fix. If the ball joint is worn or the bush service is complex, a complete arm can save time and ensure everything is renewed together.