Parts for your 2020 Mitsubishi Asx-Steering rack

2020 Mitsubishi ASX steering rack — what it does and how to look after it

Based on technical documentation, the 2020 Mitsubishi ASX is fitted with a rack-and-pinion steering rack with electric power assist (EPS). Mitsubishi’s workshop manual for ASX/RVR models (GA-series), the ASA parts catalogue listings for the steering gear assembly, and the owner’s manual references to electric power steering (with no hydraulic fluid reservoir) all confirm that a steering rack is relevant and used on this vehicle.

The steering rack’s job is straightforward but critical: it converts the driver’s steering wheel input into left–right movement that turns the front wheels, keeping the ASX tracking straight and true. In the 2020 ASX the assist is electric, so there’s no power steering fluid or pump, instead, an electric motor provides help while the rack-and-pinion hardware handles the actual wheel direction.

As part of regular servicing, the steering rack deserves a quick check. A technician will look for torn rack boots (gaiters), play in inner or outer tie-rod ends, and any unusual free play or notchiness around centre. They’ll also road-test for wandering, clunks over bumps, or a crooked steering wheel—all signs the rack or tie rods may need attention. Because it’s EPS, leaks are uncommon (there’s no fluid), but split boots can let in grit and water, accelerating wear.

• Watch for symptoms: uneven tyre wear, knocking when turning, vague steering, EPS warning light, or resistance/jerky feel around centre.
• Service tips: inspect boots every service, check tie-rod ends, ensure wheels and tyres are balanced and correctly inflated, and avoid holding full lock for long periods.

If a steering rack or inner tie rods need replacing on a 2020 ASX, professional fitment is recommended. The job may require lowering the subframe, replacing single-use fasteners, and then performing a full four-wheel alignment. After replacement, the steering angle sensor should be calibrated with a scan tool, and EPS self-checks completed. If the vehicle has driver-assist features, further calibration may be required. With quality parts and correct setup, a rack can last well over 150,000 kilometres on Aussie and Kiwi roads, provided the boots stay intact and the vehicle avoids harsh impacts.

Popular questions

Does the 2020 ASX use power steering fluid?
No. It uses electric power steering, so there’s no hydraulic fluid to top up. If you spot oily residue near the rack, it’s typically grease from a torn boot or another nearby component. Have the boots inspected and replaced if split.

How long should a steering rack last on a 2020 ASX?
Many owners see 150,000–250,000 km or more. Life depends on road conditions, tyre setup, and avoiding pothole strikes. Regular checks of boots and tie-rod ends during servicing help the rack go the distance.

What needs doing after a steering rack replacement?
A proper wheel alignment is essential, along with calibrating the steering angle sensor via a scan tool. The technician should run EPS initialisation tests and, where fitted, perform ADAS calibrations. Expect new tie-rod end settings and a straight steering wheel when finished.