Parts for your 2004 Toyota Highlander-Universal joints

2004 Toyota Highlander universal joints: what’s fitted and what to service

Per Toyota’s service information (Toyota TIS Repair Manual, Drivetrain/Propeller Shaft section) and the Toyota Electronic Parts Catalogue, the 2004 Toyota Highlander/Kluger comes in two driveline flavours. Front‑wheel drive (2WD) models do not use universal joints, they run front half‑shafts with constant velocity (CV) joints only and have no propeller shaft. All‑wheel drive (AWD) models do use universal joints as part of a two‑piece rear propeller shaft with a centre support bearing connecting the transfer case to the rear differential. Aftermarket catalogues (e.g., driveline suppliers listing U‑joints for 2004 Highlander AWD) corroborate this.

If it’s a 2WD Highlander, universal joints aren’t used because there’s no rear differential or prop shaft. The transaxle sends power straight to the front wheels through CV‑jointed shafts, so U‑joints are simply not part of the design.

For AWD owners, the 2004 Toyota Highlander universal joints sit at the ends of the propeller shaft, allowing the shaft to transmit torque at changing angles as the suspension moves and the drivetrain flexes. They’re the quiet achievers that keep the rear wheels pulling smoothly while you cruise the motorway or head down a gravel track. On this model, Toyota typically supplies the prop shaft as an assembly, and many are fitted with sealed, non‑greaseable U‑joints. That means there’s no regular greasing point, the practical approach is periodic inspection and replacement when wear shows up. A good mechanic will check for play in the crosses and caps, rust bleed, or dry, squeaky movement at low speed. If there’s vibration under load, a shudder on take‑off, or a clunk shifting from reverse to drive, the U‑joints or centre bearing could be the culprits.

When it’s time to sort them, there are two common paths in Aus and NZ: replace the complete prop shaft with a genuine or quality aftermarket unit, or have a driveline specialist rebuild the existing shaft with new U‑joints and balance it. Either way, marking flange positions before removal helps preserve alignment, and fresh flange bolts with correct torque keep things tidy. While you’re there, it’s smart to check the centre support bearing, transfer case and diff oil levels, and the condition of engine and transmission mounts that can accelerate driveline wear. Keep tyres matched and properly balanced too—uneven rolling diameters can load up the U‑joints over time. Look after the basics, and the AWD Highlander’s universal joints will generally deliver years of drama‑free service.

• Common symptoms: low‑speed squeak, take‑off shudder, highway vibration, clunk on shifts, visible play or red dust at caps.
• Service tip: many are sealed—inspect regularly and replace or rebuild when worn, maintain correct prop shaft alignment and balance.

Popular questions about 2004 Toyota Highlander universal joints

Do all 2004 Highlanders have universal joints?

No. Only AWD models have universal joints on the rear propeller shaft. 2WD models use CV joints on the front driveshafts and have no prop shaft to the rear, so universal joints aren’t part of the setup.

If you’re unsure which you have, look underneath for a centre support bearing and a shaft running to the rear diff—if it’s there, you’ve got AWD and U‑joints.

Are the U‑joints on the 2004 Highlander serviceable or greaseable?

Most are sealed units without grease nipples. Toyota’s own guidance generally treats them as non‑serviceable—replace the prop shaft assembly if the joints wear. That said, driveline specialists in Australia and New Zealand can usually rebuild the shaft with new quality U‑joints and re‑balance it.

Regular inspections during servicing are the go: catch wear early before it takes out the centre bearing or flanges.

Is it safe to drive with a worn or noisy universal joint?

Not really. A failing U‑joint can let go, causing sudden loss of drive and collateral damage to the underbody or exhaust. If you’re feeling vibration or hearing squeaks/clunks, get it checked promptly.

Short trips to a workshop might be okay at gentle speeds, but if there’s severe vibration or obvious play, arrange a tow and save yourself a bigger bill.