Symptoms
A spongy or very hard pedal with a hissing booster.
The fix, step by step
- Unsealed 4X4 says the common fix is to swap both the booster and master cylinder for the revised parts from a later Prado, then bleed the brakes.
Tools & part numbers
- Flare-nut wrenches
- brake bleeding kit
- DOT fluid
Where to buy the parts
150 Series / GX460 parts catalogue (brakes)CruiserTeq ↗
Hunting a used or discontinued part? Search eBay Motors for Toyota Land Cruiser Prado 150 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.