Symptoms
The rear sags overnight or sits on the bump stops, the compressor runs constantly, and the height-control light blinks.
The fix, step by step
- Confirm the leak with soapy water where each bag folds over its perch.
- To stay on air, replace both springs, plus the compressor if it has worn out chasing leaks.
- To convert, support the axle, remove the shocks, cut the air lines, pop the upper clip on each bag and fit a coil-conversion kit with springs, retainers and isolators.
- Most kits are sold for the GX 470's identical rear layout, so confirm Prado fitment with the vendor.
- Recheck bolt torque after 100 miles.
Tools & part numbers
- Floor jack
- jack stands
- flat screwdriver
- line cutters
- torque wrench
- coil-conversion kit
Where to buy the parts
Metal Tech 4x4 GX470 rear coil conversion kit (stage 1)Metal Tech 4x4 ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Toyota Land Cruiser Prado 120 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.