Parts for your 2012 Lexus Is-Struts

2012 Lexus IS struts — used or not?

Based on Lexus technical documentation, struts are not used on the 2012 Lexus IS (IS 250/350, XE20 series). The Lexus IS Repair Manual and New Car Features (via Toyota/Lexus TIS) specify a double‑wishbone front suspension with a separate coil spring and shock absorber (damper), and a rear multi‑link layout with separate shocks. Because neither end uses a MacPherson assembly that carries structural loads and locates the wheel, “struts” aren’t fitted to this model.

Why no struts? Lexus chose double‑wishbone up front to deliver precise geometry control and premium road manners. In this design the damper doesn’t act as a structural member, so it’s a shock absorber rather than a strut. The rear’s multi‑link arrangement follows the same philosophy.

• Better camber control through corners, helping the tyre keep a bigger contact patch for grip and braking.
• Finer tuning of steering feel and ride, suiting a rear‑drive sports sedan brief.
• Less compromise on wheel travel and geometry compared with a cost‑effective MacPherson strut.

What does that mean for servicing? The 2012 IS uses shock absorbers and coil springs, plus control arms with bushes and ball joints. If a workshop mentions “strut replacement” on this car, they’re usually speaking generically about dampers. Practical checks for owners include watching for oil seepage on the shocks, excess bounce, knocking over bumps, cupped or feathered tyre wear, and vague steering. Many shocks last well past 80,000–160,000 km depending on roads and load, but age, heat and rough surfaces shorten that. When replacing dampers, it’s sensible to assess top mounts, bump stops, dust boots, sway‑bar links and relevant control arm bushes at the same time, then finish with a four‑wheel alignment.

Technical sources referenced: Lexus IS 250/350 (XE20) Repair Manual and New Car Features through Toyota/Lexus Technical Information System (TIS), which detail the double‑wishbone front and multi‑link rear suspension with separate shock absorbers and coil springs.

Does a 2012 Lexus IS have struts or shocks?

It has shocks, not MacPherson struts. The front is double‑wishbone with a separate damper and spring, the rear is multi‑link with separate shocks. Lexus service literature lists these as shock absorber assemblies, not struts.

What should be replaced when the shocks are worn on a 2012 IS?

Best practice is to renew shocks in axle pairs and inspect/replace related wear items: upper mounts, bump stops, dust boots, sway‑bar links, and any tired control arm bushes or ball joints. Follow up with a wheel alignment to protect tyres and restore handling.

How can an owner tell the suspension needs attention?

Signs include oil on the shock body, clunks over bumps, floaty or bouncy ride, longer stopping distances, and uneven tyre wear. A bounce test and a thorough inspection on a hoist will usually confirm what’s due.