Parts for your 2020 Lexus Is-Coil springs

2020 Lexus IS coil springs: what they do and when to service them

Technical references including the Lexus IS (2020) Repair Manual, the 2020 IS Owner’s Manual suspension section, and the Toyota/Lexus Electronic Parts Catalogue confirm the 2020 Lexus IS runs conventional steel coil springs on both axles. The IS uses a double-wishbone front suspension and a multi-link rear, each paired with coil springs and gas dampers. Even F Sport and AVS-equipped variants keep coil springs rather than air suspension.

Coil springs carry the vehicle’s weight, set ride height, and keep tyres planted over bumps. On the 2020 IS they work with the dampers to manage body control in corners and soak up rough Aussie and Kiwi roads. Healthy springs contribute to sharp steering, consistent braking, and even tyre wear.

Because springs fatigue gradually, issues can sneak up. Typical symptoms include a sagging corner, clunks over bumps, uneven tyre wear, and a harsher or floaty ride. Visible corrosion, chipped coating, or a broken tail on the coil are red flags. A quick check each service, or every 15,000–20,000 kilometres, is a smart move—especially if the car sees rough roads or carries loads.

When replacement’s due, reputable workshops replace coil springs in axle pairs to keep handling balanced. On the IS that means both fronts or both rears together. It’s also wise to inspect or renew related parts while it’s apart—upper mounts, insulators, bump stops, and dust boots. After any spring work, a wheel alignment should be done to protect tyres and restore crisp turn-in.

• Don’t mix spring rates or ride heights side-to-side.
• Avoid heating or cutting springs, it weakens the steel and can fail a WOF/RWC.
• Use proper spring compressors and Lexus torque specs, final tightening at normal ride height helps prevent bush preload.
• If corrosion is common where the IS lives, consider protective coatings on new springs.

With the right springs fitted and aligned, the 2020 IS keeps that planted, confident feel owners expect, whether commuting in the city or touring long distances across New Zealand and Australia.

FAQs

Does the 2020 Lexus IS use coil springs or air suspension?
The 2020 IS uses steel coil springs front and rear. Even AVS models pair electronically controlled dampers with traditional coils rather than air bags.

How often should coil springs be replaced?
There’s no fixed interval. They’re inspected each service and replaced when sagging, cracked, corroded, or after impact damage. Many last well past 150,000 km if not abused.

Can a single broken coil spring be replaced on its own?
It’s best practice to replace springs in pairs on the same axle to maintain even ride height and handling balance.