Parts for your 2017 Toyota Mark x-Steering rack

2017 Toyota Mark X Steering Rack

Based on Toyota technical literature for the GRX130/133 series (New Car Features manual, Repair Manual, and Toyota Electronic Parts Catalogue), the 2017 Toyota Mark X uses an electric power steering (EPS) rack-and-pinion steering gear. The EPC lists a “steering gear assembly” for this model year, confirming a steering rack is fitted and serviceable.

The steering rack on the 2017 Mark X is the heart of the car’s direction control, translating the driver’s wheel inputs into precise movement at the front wheels. With EPS, assistance comes from an electric motor on the rack, not hydraulic fluid. That means no power-steering fluid changes, fewer leak points, and typically better on-centre feel at cruising speeds.

As part of routine servicing, it’s smart to give the rack and its linkages a once-over. A technician should check inner and outer tie rods for play, inspect the rack boots for tears or grease seepage, and confirm the rack mounts are tight. If the car’s had a knock from a kerb or pothole, a quick alignment check can save tyres from scrubbing out prematurely and keep the Mark X tracking straight as.

If replacement is on the cards, it’s a job that rewards care. The steering wheel needs to be locked in the straight-ahead position and the clockspring protected, then once the new rack is in, an EPS/steering angle “zero-point” calibration is required with a scan tool, followed by a proper wheel alignment. New tie rod lock nuts and boot clamps should be used, and all fasteners torqued to Toyota spec. On EPS cars, don’t splash water or solvents into the motor or connectors — that’s a fast track to fault codes.

Typical symptoms that suggest the Mark X’s rack or tie rods need attention include:

• Clunks or looseness felt through the wheel on bumps
• On-centre play or wandering, plus uneven tyre wear
• Steering warning light with EPS-related fault codes
• Torn rack boots or visible contamination at inner joints

Driven sensibly on good roads, many racks sail past 200,000 km. Big wheels, lowered suspension, or rough roads can accelerate wear, so periodic inspections are a good shout. Keep it tight, calibrated, and aligned, and the Mark X will steer beautifully for years.

FAQs

Does the 2017 Mark X use power-steering fluid?

No. This model runs electric power steering (EPS) with a rack-and-pinion gear, so there’s no hydraulic pump, hoses, or fluid to service. If fluid is spotted around the front subframe, it’s likely from another system or a past modification — worth having a technician check it out.

How long should a steering rack last on a Mark X?

With normal use, many see 150,000–250,000 km or more. Hard knocks, big rims with low-profile tyres, lowered suspension, and torn rack boots can shorten life. Regular inspections and prompt alignment after impacts help the rack go the distance.

After replacing the rack, is programming needed?

Yes. An EPS/steering angle zero-point calibration is required with a suitable scan tool, and a full wheel alignment should follow. Skipping either can leave the steering off-centre, trigger warning lights, or set EPS fault codes.