Parts for your 2014 Toyota Mark x-Control arms

2014 Toyota Mark X Control Arms — What They Do and When to Service Them

Control arms are absolutely used on the 2014 Toyota Mark X. Technical sources, including the Toyota Mark X GRX130 Repair Manual, the Toyota Electronic Parts Catalogue (EPC) for GRX130 series, and the 2014 Japanese-market specification sheets, confirm the car runs a double-wishbone front suspension (upper and lower control arms) and a multi-link rear setup (multiple control arms per side). That layout is a big part of why the Mark X feels planted and sharp through bends.

On this model, control arms link the chassis to the hubs, keeping wheel alignment angles steady as the suspension moves. The arms pivot on rubber or hydraulic bushes and, where applicable, ball joints that allow smooth articulation. The result is precise steering, predictable tyre contact, and bang-on braking stability. When the bushes or ball joints wear, the car can wander, clunk over bumps, tramline, or chew out tyres at the inner or outer edges.

As part of regular servicing, it’s smart to inspect the Mark X’s control arm bushes and ball joints every 20,000–30,000 km, or sooner if it lives on rough roads. Look for cracked or leaking bushes, torn dust boots, excess play, or rusty, seized hardware. Typical tell-tales include a hollow knock on turn-in or over speed humps, vague steering on the motorway, and uneven tyre wear. Don’t ignore a shudder under braking either — worn lower arm bushes can let the wheel shift fore–aft.

Replacement approach depends on build spec and parts choice. On many GRX130 variants, front lower ball joints are serviceable and bushes can be pressed in, however, plenty of quality aftermarket and OE-style arms come pre-fitted with new bushes and joints, which can be better value once labour is tallied. Replace in axle pairs when practical to keep handling balanced. Always torque control arm bolts at normal ride height to avoid pre-loading the bushes, and budget for a four-wheel alignment straight after — the double-wishbone and multi-link geometry is sensitive to even small changes.

Handy tips:

• Use new self-locking nuts/bolts where Toyota specifies non-reusable hardware.
• Check sway bar links and bushings while you’re in there — they often age out together.
• Stick with reputable brands, cheap bushes can go mushy fast and cost tyres.
• If the steering still feels off after new arms, recheck alignment and tyre pressures.

Popular questions about 2014 Toyota Mark X control arms

Does the 2014 Toyota Mark X actually have control arms?
Yes. Factory documentation for the GRX130 series — including the Toyota Repair Manual and EPC — specifies a double‑wishbone front end (upper and lower control arms) and a rear multi‑link with several control arms per side. They’re core to the car’s handling and tyre wear behaviour.

When should the control arm bushes or ball joints be replaced?
There’s no fixed kilometre limit because roads and driving style vary, but many owners see wear signs around 80,000–150,000 km. Replace sooner if there’s clunking, wandering, or uneven tyre wear. During routine services, a play check and visual inspection of bushes and boots helps catch issues early.

Do you need a wheel alignment after replacing control arms?
Absolutely. Any change to arms, bushes, or ball joints will shift alignment on a double‑wishbone/multi‑link setup. A proper four‑wheel alignment right after installation protects tyres and restores the Mark X’s tidy steering feel.