Parts for your 1999 Toyota Crown-Cv boots

1999 Toyota Crown CV boots – what they do and when to service them

Technical references including the Toyota Electronic Parts Catalogue for the S170 series, the Toyota Crown (S170) Chassis/Drivetrain Repair Manual sections covering “Drive Shaft (Rear)” and “Front Drive Shaft (4WD)”, and major parts catalogues from OEM suppliers (e.g., Aisin and GSP) confirm that CV boots are used on the 1999 Toyota Crown. All independent rear suspension variants use CV-jointed rear half‑shafts with rubber boots, and 4WD “Four” grades add front drive shafts with CV boots as well. So CV boots are absolutely relevant on this model.

On a 1999 Toyota Crown, the CV boots are those ribbed rubber bellows that seal the constant velocity joints on the drive shafts. Their job is simple but critical: keep the special moly grease in, and keep water, grit, and road muck out. On RWD Crowns, that means boots on both ends of each rear half‑shaft. On 4WD trims, the front axles also have inner and outer boots either side of the CV joints at the transaxle and wheel ends.

When a Crown’s CV boot cracks or splits, grease gets flung across the underbody and brakes, and contamination sneaks into the joint. Left long enough, the joint wears, bringing clicks on take‑off or turns (front), vibration under load (rear or front), and ultimately a shot CV. That’s why it’s smart to inspect boots at every service or roughly each 10,000 km—especially if the car sees gravel roads, coastal air, or lots of heat cycles.

Replacement is straightforward workshop fare: the shaft is removed, old clamps and boot are taken off, the joint is cleaned and repacked with high‑moly CV grease, a new quality rubber or TPE boot is fitted, and proper ear‑type clamps are crimped. Many owners choose full shaft assemblies when joints are already noisy, but a timely boot swap often saves the original shafts. On the Crown’s rear IRS, replacing a torn boot promptly avoids diff oil contamination and costly joint replacement. On 4WD fronts, extra care is taken around ABS sensors and seals.

• Check for grease spray on inner wheels or suspension arms.
• Look for small radial cracks in the boot ribs—replace at first sign.
• Use the correct CV grease and proper clamp tools, avoid cable ties.
• After any boot work, road test for vibration and recheck for weeps.

Kept healthy, CV boots quietly protect the joints that keep the Crown smooth, silent, and dependable on Aussie and Kiwi roads.

Popular questions about 1999 Toyota Crown CV boots

Do all 1999 Toyota Crowns have CV boots?
Yes. All S170 Crowns with independent rear suspension have CV boots on the rear half‑shafts. Models with 4WD also have CV boots on the front axles. This is documented in Toyota’s S170 chassis/drivetrain service manual and the EPC listings for rear drive shaft boot kits.

How often should CV boots be replaced on a 1999 Crown?
There’s no fixed interval—replace on condition. Inspect at every service. If any cracking, weeping, or loose clamps are spotted, replace the boot and repack the joint before grit gets in. In harsher conditions (gravel, coastal, heat), check more often.

Is it safe to drive with a split CV boot?
Short answer: not for long. A small split quickly becomes a contaminated joint. If the boot has just failed and the joint is still quiet, a prompt boot and grease service can save it. If there’s already clicking or vibration, plan on a joint or complete shaft replacement.