Parts for your 1999 Toyota Crown-Driveshafts

1999 Toyota Crown driveshafts — what they do and how to look after them

Based on technical references such as the Toyota Electronic Parts Catalogue (EPC) for the S170-series Crown and Toyota service manual drivetrain sections for this model range, the 1999 Toyota Crown is built on a longitudinal rear‑wheel‑drive layout, with some grades offering all‑wheel drive. That means it absolutely uses driveshafts: a propeller shaft running from the transmission to the rear differential, plus rear axle half‑shafts (and an additional front prop shaft on AWD variants). So driveshafts are relevant to this vehicle.

On a 1999 Crown, the prop shaft’s job is to deliver torque smoothly from the gearbox to the rear diff. Most Crowns of this era run a two‑piece prop shaft with a centre support bearing and universal joints (U‑joints), designed to handle chassis movement and keep vibrations low. Independent rear suspension models also use CV half‑shafts from the diff to the wheels. AWD “i‑Four” variants add a transfer case and a front prop shaft as well.

Servicing is mostly about inspection and preventative attention. At regular service intervals, it’s wise to:

• Check for play or roughness in U‑joints and the centre support bearing, look for red dust around caps or perished rubber.
• Inspect prop shaft and half‑shaft seals and boots for leaks or tears, and check flange bolts for tightness.
• Listen for clunks on take‑off, humming or shudder under load, and vibrations at highway speeds — classic driveline warning signs.

If replacement is on the cards, mark the flanges before removal so the shaft goes back in phase, support the shaft to avoid stressing the joints, and follow torque specs from the Toyota service manual. Many Toyota U‑joints are sealed and replaced as assemblies, a driveline specialist can also balance the shaft if you’ve had components changed. When CV boots on rear half‑shafts are torn, replace boots promptly to save the joint. For AWD models, add checks of the transfer case and front prop shaft joints and seals.

There’s no fixed kilometre‑based replacement interval for driveshafts, condition, use, and road quality in AU/NZ matter more. Regular inspections at each major service keep the Crown quiet and smooth, protect the diff and gearbox from shock loads, and help avoid bigger bills down the track.

Popular questions about 1999 Toyota Crown driveshafts

What are the common symptoms of a worn driveshaft on a 1999 Crown?

Owners often notice a vibration that rises with road speed, a shudder on take‑off, or a metallic clunk when shifting from reverse to drive. A failing centre support bearing can add a droning noise, while dry U‑joints may squeak at low speed. Torn CV boots on rear half‑shafts can fling grease and eventually cause clicking under load.

How often should the driveshaft and centre bearing be checked?

As part of routine servicing, a quick driveline inspection every 10,000–15,000 km is smart, with a more thorough check at major services. In tougher conditions or on vehicles used for towing, inspect more frequently. Replace components based on condition — any play, roughness, leakage, or boot damage means action now rather than later.

Is it safe to keep driving with a vibration from the driveshaft?

It’s best not to. Persistent vibration can accelerate wear in U‑joints, the centre bearing, diff pinion bearings, and even the transmission output. If the vibration is new or worsening, have it inspected promptly and avoid high‑speed driving until the cause is identified and sorted.