Parts for your 2015 Toyota Hiace-Control arms

Understanding Control Arms on the 2015 Toyota Hiace

The 2015 Toyota Hiace is well-known for its reliability, robust build, and versatility, making it a popular choice among tradies and businesses across Australia. When it comes to its suspension setup, it is important to get clear about whether control arms are part of the design and what role they play if they are fitted.

For this model year and configuration, the 2015 Toyota Hiace employs a front independent suspension and a solid rear axle. More specifically, the front suspension is a double wishbone setup, which does indeed mean control arms are present at the front. Control arms, also sometimes called A-arms or wishbones, are a vital component in this type of suspension system.

The rear suspension, on the other hand, utilises a leaf spring setup combined with a solid axle. Leaf springs take on a lot of the load-bearing and suspension duties here, meaning traditional control arms are not used at the rear of the 2015 Hiace. This is common for commercial vans where load capacity and durability take priority.

So if you own or service a 2015 Toyota Hiace, you can expect control arms on the front suspension only. Now let's delve into what these control arms are all about and what owners and mechanics should know when it comes to their maintenance and replacement.

Control arms are the arms that connect the wheel hub and steering knuckle to the vehicle's frame or chassis. They play a key role in the suspension system by allowing the wheels to move up and down while keeping them properly aligned relative to the road and the rest of the vehicle. In the Hiace's double wishbone front suspension, there will typically be an upper and a lower control arm on each side.

The main purpose of control arms is to help manage the suspension's movement while maintaining the correct geometry for handling, steering, and tyre wear. They act as pivot points, aided by bushings and ball joints that allow controlled motion and flexibility while absorbing some vibrations and impacts from the road.

If the control arms or their associated components wear out or get damaged, the vehicle may experience a range of problems including poor wheel alignment, uneven tyre wear, wandering steering, clunking noises, and an overall unpleasant or unsafe driving experience. This is why regular inspection of control arms during servicing is important.

Typical signs that control arms or their bushes need attention on a 2015 Toyota Hiace include:

• Unusual or excessive play when pushing or lifting wheels
• Clunking or knocking noises over bumps
• Excessive vibration or shimmy in the steering
• Uneven or rapid tyre wear patterns
• Difficulty maintaining straight-line stability

Routine servicing often involves a visual and physical check of the control arms and associated ball joints and bushings for cracks, tears, corrosion, or looseness. In workshop conditions, mechanics may use specialised tools to measure play or inspect the integrity of the suspension parts.

When it comes time to replace control arms on the 2015 Hiace front suspension, it is crucial to fit genuine or high-quality aftermarket parts that meet Toyota's specifications. Poor quality replacements can lead to premature failure or compromised handling. Additionally, after control arm replacement, a professional wheel alignment should always be done to ensure the suspension geometry is restored to factory settings.

Proper maintenance of control arms helps prolong the suspension's life and maintains the Hiace's well-regarded driving dynamics. It also contributes to better safety overall by improving handling responsiveness and stability on the road or worksite. This is especially important for a vehicle like the 2015 Toyota Hiace which often shoulders heavy cargo loads or carries multiple passengers.

To keep those control arms in top condition, along with the rest of the suspension, regular checks as part of every service interval are recommended. This includes lubrication where appropriate and prompt attention to any signs of wear or damage. Taking care of the front suspension ensures the Hiace continues to deliver durability and driving comfort mile after mile.