Parts for your 2006 Toyota Mark x-Universal joints

2006 Toyota Mark X universal joints: what they do and how to look after them

Based on Toyota technical references for the GRX12# series (Toyota Repair Manual – Propeller Shaft and Steering sections, and the Toyota Electronic Parts Catalogue for GRX120/121/125), the 2006 Toyota Mark X is fitted with universal joints. They’re used on the two-piece propeller shaft in rear-wheel-drive models, and there’s also a universal joint in the steering intermediate shaft. So yes—universal joints are relevant to this model.

On the Mark X, the driveline universal joints (U-joints) let the prop shaft transmit torque from the transmission to the rear differential while dealing with changes in angle as the suspension moves. That flexibility keeps the drive smooth and reduces stress on bearings and gears. The steering intermediate shaft U-joint does a similar job for steering input, allowing column angle changes without binding.

From the factory, many Toyota prop shafts of this era use staked, sealed U-joints. That means there are no grease nipples and the joints aren’t intended to be serviced individually, when there’s excessive play or roughness, Toyota’s guidance is typically to replace the propeller shaft assembly and centre support bearing as required. Specialist driveline shops can sometimes de-stake and fit serviceable U-joints, but that’s a custom repair and should include shaft balancing.

As part of routine servicing on a 2006 Mark X, a good workshop will:

• Check for driveline vibrations on acceleration, cruise, and coast.
• Inspect the U-joint caps for rust powder, dried grease, or movement.
• Feel for notchiness or free play with the shaft supported and the transmission in neutral.
• Inspect the centre support bearing rubber for cracks or sagging.
• Verify flange bolt tightness to factory torque (use the Toyota manual for specs).

Common signs the U-joints are on the way out include a dull clunk when shifting from reverse to drive, a rhythmic vibration that changes with road speed, or a chirping/squeak at low speed. Left too long, a failing joint can damage the yokes or centre bearing, so it pays to sort it as soon as the symptoms show.

If replacement’s needed, quality components and correct reassembly are key. Mark the flanges before removal to preserve orientation, renew flange bolts if specified, and have the prop shaft balanced if joints are changed. After any driveline work, a quick road test to confirm vibration-free running is the go.

Popular questions about 2006 Toyota Mark X universal joints

How often should the Mark X U-joints be inspected?
They’re usually checked at regular servicing intervals, or any time there’s a vibration or clunk reported. Because many are sealed, the focus is on condition and play rather than greasing. A quick look every 10,000–15,000 km with a thorough check during major services is a sensible rhythm.

Are the Mark X’s U-joints serviceable or do they need full prop shaft replacement?
From Toyota’s documentation for the GRX12# series, the prop shaft U-joints are typically sealed and staked, so Toyota sells the shaft as an assembly. Some driveline specialists can retrofit serviceable joints, but it requires proper tooling and subsequent balancing to avoid vibrations.

What symptoms point to a bad steering intermediate shaft U-joint?
A stiff or notchy feel on centre, slight binding when turning, or a rattle over bumps can point to wear in the steering U-joint. If those show up, inspection and replacement of the intermediate shaft assembly is the usual fix.