Parts for your 2017 Lexus Is-Power steering hose

2017 Lexus IS power‑steering hose — is it used?

For the 2017 Lexus IS (XE30 series), a traditional power‑steering hose isn’t fitted or required. Lexus specifies an Electric Power Steering (EPS) system across the IS range for this model year (including IS 200t/300/350, and AWD variants). EPS replaces the conventional hydraulic pump, fluid reservoir, and high‑pressure/return hoses with an electric motor integrated on the steering rack.

Technical sources that document this include the Lexus IS Owner’s Manual sections labelled “Electric power steering system,” the Lexus Repair Manual (Toyota/Lexus TIS) chapters titled “Power Steering System (Electric Power Steering),” and the Toyota/Lexus Electronic Parts Catalogue for the 2017 IS, which lists the electric steering gear assembly but no hydraulic hoses or pump. Together, these publications confirm there are no power‑steering hoses on this vehicle.

Why no hose? Because there’s no hydraulic fluid to move. EPS uses a control module and an electric assist motor to provide steering assistance, so the usual hydraulic plumbing simply doesn’t exist. That means no pressure lines, no return lines, and no power‑steering fluid changes or leaks to worry about. It also delivers benefits owners in Australia and New Zealand will appreciate: improved fuel economy, consistent assist at parking speeds and on the motorway, and easier integration with driver‑assist features.

What should an owner or workshop focus on instead?

• Inspect steering rack boots and tie‑rod ends for splits or play.
• Check the intermediate shaft/universal joints for free movement and no clunks.
• Keep wheel alignment and tyre condition in check to avoid steering pull or uneven feel.
• Verify battery health and charging system performance — EPS relies on solid system voltage.
• If steering feel is off or warning lights appear, scan for EPS trouble codes and perform any required calibrations (zero‑point/centre learn) per Lexus procedures.

So if someone’s chasing a “power‑steering hose” for a 2017 Lexus IS, they’re looking for a part the car doesn’t use. Any fluid under the bonnet won’t be power‑steering fluid — it’ll be engine coolant, brake fluid, or washer fluid.

Popular questions

Does a 2017 Lexus IS have a power‑steering hose?
No. The 2017 IS uses Electric Power Steering, so there’s no hydraulic pump, no fluid, and no hoses. If you’ve been quoted for a “power‑steering hose” on this model, it’s worth double‑checking the vehicle details.

Is there any power‑steering fluid to change on a 2017 IS?
No. With EPS there’s no power‑steering fluid or reservoir. Routine steering care is about inspecting the rack boots, tie‑rods, and doing wheel alignments as needed, plus keeping the battery and charging system in good nick.

What are signs of an EPS issue on the 2017 IS?
A steering warning light, noticeably heavy or inconsistent steering assistance, or a pull that isn’t caused by tyres or alignment. A diagnostic scan will point to EPS‑related fault codes and the correct service steps.