With Electronic Modulated Air Suspension

WARNING: This page is about a different car, the 2004 Lexus LS 430, 2003 Lexus LS 430, and 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If vehicle height is not within specification, try to adjust by pushing down or lifting body.

Place shift lever in "P" range.
Bounce vehicle up and down several times to stabilize suspension.
Move vehicle forward and backward by pushing to settle wheels.
Block wheels to keep vehicle from rolling. Place shift lever in N range.
Release parking brake.
Start engine. Set height control switch in HIGH position. Wait one minute. Set height control switch in NORM position. Wait 50 seconds. Repeat switching to HIGH, waiting, and returning to NORM. Be sure to perform procedure 2 times to settle each suspension part.
Measure front vehicle height from ground to center of lower control arm mounting bolt. See Fig 1.
Measure rear vehicle height from ground to center of lower control arm No. 2 mounting bolt. See Fig 1.
When radius of a wheel is 12.4 inches (315 mm) or 12.52 inches (318 mm), vehicle height should be standard. For standard vehicle height specification, see STANDARD VEHICLE HEIGHT SPECIFICATION WITH ELECTRONIC MODULATED AIR SUSPENSION table. The difference between left and right side should be .39 inches (10 mm) or less. The difference between front and rear should be .49-1.67 inches (12.5-42.5 mm).
If vehicle height is not within specification, adjust by turning height control sensor link.

Fig 1: Measuring Vehicle Height

STANDARD VEHICLE HEIGHT SPECIFICATION WITH ELECTRONIC MODULATED AIR SUSPENSION

Tire Size	Front In. (mm)	Rear In. (mm)
P225/60R16	7.61-8.39 (193-213)	7.84-8.62 (199-219)
P225/55R17	7.72-8.5 (196-216)	7.96-8.74 (202-222)