Parts for your 2020 Lexus Is-Cv boots

2020 Lexus IS CV-boots: what they do and when to replace them

Based on Lexus/Toyota Technical Information System (TIS) repair procedures and the Lexus Electronic Parts Catalogue (EPC) for the 2020 Lexus IS (XE30, IS 300/IS 350), this model uses constant-velocity (CV) joints with rubber boots. All rear-wheel-drive variants have CV boots on the rear drive shafts, and all-wheel-drive variants (where offered) have CV boots on both the front and rear drive shafts. The factory maintenance schedule also calls for periodic inspection of axle/drive shaft boots, confirming the part’s relevance on this vehicle.

On a 2020 Lexus IS, the CV-boots are the flexible rubber sleeves that seal grease around the CV joints and keep grime and water out. They’re small parts with a big job: without intact boots, CV joints lose lubrication, cop dust, and wear out fast—leading to clicks on throttle, shudders under load, and eventually costly shaft replacement.

As part of routine servicing, CV-boots deserve a quick look from underneath. Any split, perishing, or grease fling around the inside of the wheel or suspension is a red flag. In Aussie and Kiwi conditions—heat, UV, and the odd gravel road—rubber can age faster, so regular checks are smart.

• Inspect at each service (or every 10,000–15,000 km): look for cracks, tears, loose clamps, or slung grease.
• If a boot is torn but the joint’s quiet and smooth, a boot-only replacement and fresh high-moly CV grease can save the shaft.
• If there’s clicking on turns, vibration on acceleration, or gritty play in the joint, a complete drive shaft may be the better fix.

Quality matters. Genuine or high-spec aftermarket boots, proper stainless clamps, and the correct grease keep things sealed and quiet. After any boot or shaft work, it’s good practice to road test for noise and recheck for leaks. Tyre and brake components nearby should be cleaned of any stray grease to avoid pad contamination or a slipping feel.

For RWD IS models, attention is focused on the rear boots, for AWD versions, add the front axle boots to the checklist. Either way, keeping those boots healthy protects the driveline, keeps the ride smooth, and helps prevent WOF/roadworthy headaches.

Popular questions about 2020 Lexus IS CV-boots

Do all 2020 Lexus IS models have CV-boots?
Yes. RWD versions have CV-boots on the rear drive shafts only. AWD versions (where sold) have CV-boots on both front and rear shafts. This layout is confirmed in Lexus service information and the parts catalogue for the XE30 platform.

How often should CV-boots be checked or replaced?
There’s no fixed replacement interval—boots are inspected at regular services. In Australian and New Zealand conditions, checking every service or roughly 10,000–15,000 km is sensible. Replace a boot as soon as it’s torn or perished, delaying can damage the joint and turn a simple boot job into a full shaft replacement.

What are the signs a CV-boot or joint needs attention?
Look for grease sprayed around the inner wheel, arm, or underbody, a visible split in the boot, or loose clamps. Driving symptoms include clicking when turning, a shake on acceleration, or a hum that changes with speed. If these show up, the joint may already be wearing and should be checked promptly.