Vehicle Dynamic Suspension

General Specifications

Ride height:
Off road:
Spec 55 mm (2.1 in) above standard
Access - reselectable whilst vehicle is moving:
Spec 50 mm (1.9 in) below standard

Trim height Configured using T4 plus special tools

Height sensors:
Location 4 per vehicle - one sensor for each wheel

Height sensor arm colour coding:
Front GREY
Left-hand rear WHITE
Right-hand rear BLACK

Height sensor operating voltages:
Supply voltage:
5 volts - supplied by air suspension ECU
Output voltage:
Left hand front and right hand rear - Decreases to 0.5 volts with bump travel. Right hand front and left hand rear - Decreases to 4.5 volts with bump travel

Spring/damper modules:
Type Guided air spring surrounding twin tube damper

Pressures:
Normal - Front 800 to 1000 kPa (8.0 to 10.0 bar / 116.0 to 145.0 psi)
Normal - Rear 500 to 800 kPa (5.0 to 8.0 bar / 72.5 to 116.0 psi)
Burst pressure 3500 kPa (35 bar / 507.5 psi)
Maximum spring pressure - Full bump at gross vehicle weight Approx. 2700 kPa (27 bar / 391.5 psi)

Air compressor:
Supplied with air drier, electrically switched, pilot operated exhaust valve and double temperature sensors
Controlled by ECU
Maximum pressure 1680 kPa (16.8 bar / 243.6 psi)

Air reservoir:
Volume 9 liters (0.31 cu.ft)
Working pressure 1750 kPa (17.5 bar / 253.75 psi)
Maximum operating pressure 2300 kPa (23 bar / 333.5 psi)
Reservoir valve block Incorporates pressure sensor to monitor spring and air reservoir pressures

Valve blocks:
Front 2 corner valves, 1 cross link valve - all mounted on front bumper armature
Rear 2 corner valves, 1 cross link valve - all mounted on left hand rear spring tower

Note: The front height sensors are not handed.

Gap between underside of the toe link rubber boot and the chassis bracket:
Spec 12.0 mm (0.473 in)