Parts for your 2020 Lexus Is-Universal joints

2020 Lexus IS universal joints – what they do and when to sort them

Yes, the 2020 Lexus IS uses universal joints. Technical sources including the Lexus IS (XE30) Repair Manual (Drivetrain/Axle – Propeller Shaft section), Toyota/Lexus New Car Features, and the Toyota/Lexus Electronic Parts Catalogue confirm the IS300/IS350 runs a two‑piece propeller shaft with needle‑bearing universal joints and a centre support bearing on rear‑wheel‑drive models. AWD variants add a front propeller shaft with additional joints. On these models the joints are staked and considered non‑serviceable on their own, with Lexus specifying replacement of the complete shaft assembly if a joint is worn.

On the 2020 Lexus IS, the universal joints sit at the ends of the propeller shaft to cope with angle changes as the drivetrain and rear suspension move, keeping torque delivery smooth and vibration free. They’re a quiet achiever: when they’re healthy, you won’t notice them, when they’re tired, you’ll feel it.

• Common symptoms: a clunk taking off or shifting from drive to reverse, a rhythmic vibration that changes with road speed, squeaks at low speeds, or visible rust bleed around the bearing caps.
• Why they wear: high torque launches, off‑throttle shock loads, water ingress, or simply big kilometres.

Servicing approach is inspect rather than lube. The factory joints aren’t fitted with grease nipples and are sealed-for-life. During routine services (every 12 months/15,000 km is typical in AU/NZ), a technician should check for free play at the shaft flanges, look for dry or torn seals, and note any runout or imbalance. If there’s play or roughness, plan on replacement before it takes out the centre bearing or damages the diff/gearbox flanges.

Replacement tips for this model: Lexus specifies replacing the complete propeller shaft assembly because the universal joints are staked in. Mark the flange relationships before removal to preserve balance, use new flange bolts where specified, and torque to spec from the repair manual. After refit, a road test to confirm no vibration is essential. AWD versions add a front shaft, so labour time and access are a bit more involved—expect more time on the hoist and careful alignment of both shafts.

Many IS models will go well past 200,000 km on original joints with sensible driving. If a vibration pops up after a curb strike or after other driveline work, get the joints and centre bearing checked early—it’s cheaper than chasing a cascade of knocks and shudders later. Specialist driveline shops can sometimes rebuild a shaft, but Lexus’ official path is a complete shaft replacement.

Popular questions about 2020 Lexus IS universal joints

Do all 2020 Lexus IS models have universal joints?
Yes. According to the Lexus IS (XE30) Repair Manual and the Toyota/Lexus EPC, RWD models use a two‑piece rear propeller shaft with universal joints and a centre bearing. AWD models also have a front propeller shaft, adding more joints. They’re part of the driveline that allows angle changes while transmitting torque.

Can the universal joints be greased or replaced on their own?
The factory joints are sealed and don’t have grease nipples. Lexus treats them as non‑serviceable, if a joint fails, the recommended fix is replacing the complete propeller shaft assembly. Some driveline specialists can machine and rebuild a shaft with serviceable circlip‑type joints, but that’s outside Lexus’ standard procedure.

What does replacement typically cost and how long does it take?
Labour for a rear prop shaft on a RWD IS is commonly around 1.0–1.5 hours, AWD models can run 2–3 hours because there’s a front shaft to manage as well. Parts pricing varies widely between genuine new, exchange, or specialist‑rebuilt shafts. A proper quote should include new flange bolts where specified and a road test to verify no residual vibration.