Symptoms
Rear sags after sitting, the compressor runs a lot, or the height-control warning appears. This applies only to trucks with rear air ('10–'13 Premium and '14-on Luxury).
The fix, step by step
- Support the axle on stands, remove the wheels and release the air springs.
- Either fit new air springs or convert to coils with a bolt-on kit.
- Lifting a truck with rear air means converting first.
- Southern Style Offroad's kit adds adjustable spacers to correct KDSS lean.
- If you convert and plan to add Crawl Control later, you'll need the non-AVS crawl switch (84970-60090).
Tools & part numbers
- Floor jack
- stands
- basic metric sockets
- coil conversion kit (e.g. Metal Tech 4x4 Stage 3 stock height, or Southern Style Offroad) or replacement air springs
Where to buy the parts
Rear air springs, 2015 GX 460RockAuto ↗Amazon ↗
Rear coil springs (conversion), 2015 GX 460RockAuto ↗Amazon ↗
Air suspension compressor, 2015 GX 460RockAuto ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Lexus GX 460 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.