Parts for your 2009 Lexus Is-Control arms

2009 Lexus IS Control Arms: What They Do and How to Look After Them

Control arms are absolutely used on the 2009 Lexus IS. Factory technical references—including the Lexus/Toyota Repair Manual (Toyota TIS), the New Car Features (NCF) guide for the XE20 platform, and the Toyota Electronic Parts Catalogue (EPC)—specify a double wishbone front suspension with upper and lower control arms, and a multi-link rear setup with multiple control arms. Major aftermarket catalogues for this model also list complete arms, bushes, and ball joints, confirming their fitment.

On this Lexus, the control arms locate the wheels, manage camber and caster, and let the suspension move smoothly while keeping the tyres planted. Up front, the double wishbone design uses an upper arm and a lower arm to control the wheel’s movement arc for sharp steering feel and consistent tyre contact. Down the back, the multi-link arrangement uses several arms to fine-tune toe and camber through the travel range, helping the IS feel settled and predictable mid-corner and under brakes.

Over time, rubber bushes harden or crack, and ball joints can loosen up, which knocks ride quality and alignment out of spec. Owners might notice tramlining, clunks over bumps, vague turn-in, or uneven tyre wear. Left too long, that wear can snowball into poor braking stability and a noisy, harsh ride.

As part of routine servicing, it’s smart to inspect the control arms and bushes every 20,000 km or annually—looking for split or oil-soaked bushes, torn dust boots, and any free play. Some arms on this model have integral ball joints, so replacement of the complete arm is the proper fix. Where bushes are serviceable, quality replacements can restore the factory feel without changing the whole arm.

• Always torque arm bolts with the vehicle at normal ride height to avoid pre-loading the bushes.
• Book a four-wheel alignment after any arm or bush replacement.
• Use OE or reputable aftermarket parts matched to the exact variant (IS250/IS350, RWD/AWD) as geometry and arms can differ.
• If corrosion is present, plan for new eccentric bolts and nuts to save time in the bay.

Done right, fresh control arms and bushes bring the 2009 Lexus IS back to its crisp, confident best—quiet over rough stuff, precise on turn-in, and kind to its tyres.

FAQs

What are common signs the 2009 Lexus IS control arms or bushes are worn?

Typical clues include clunks over speed humps, vague steering on the motorway, uneven tyre wear on the inner or outer edges, and a steering wheel that won’t stay centred. Under brakes, the car may wander or feel unsettled.

Any of these symptoms warrant a suspension inspection. If play is found in a ball joint or a bush is cracked, replacement restores alignment control and ride comfort.

Do the front and rear control arms differ on a 2009 Lexus IS?

Yes. The front uses a double wishbone layout with distinct upper and lower arms, while the rear is a multi-link system with several specialised arms per side. Arm designs and bush specs vary by position and by model variant (IS250 vs IS350, RWD vs AWD).

Always order using VIN or precise model details to ensure correct geometry and hardware.

Is a wheel alignment needed after replacing control arms on this model?

Absolutely. Changing arms or bushes alters camber, caster, and toe. A professional four-wheel alignment is essential to set the geometry back to spec, protect the tyres, and keep the Lexus’ steering feel sharp.

Ask the workshop to torque the bushes at ride height before aligning for the best result.