Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000001DW9005X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: SUSPENSION: SUSPENSION FLUID: BLEEDING; 2007 MY LX470 [08/2006 -        ]

BLEEDING

NOTICE:

The AHC pump and motor assembly dose not operate unless all doors closed.

HINT:

If any work is done on the AHC system or if air is suspected in the AHC lines, bleed the system of air.

1. FILL RESERVOIR WITH ACTIVE HEIGHT CONTROL SUSPENSION FLUID

(a) While the vehicle is stopped, pour the suspension fluid AHC in the reservoir tank.

Fluid:

Suspension fluid AHC

NOTICE:

Do not start the engine until the fluid is poured in the reservoir tank.

2. BLEED ACTIVE HEIGHT CONTROL SUSPENSION FLUID LINES

(a) Start the engine and push the vehicle height select switch to select "N" mode.

NOTICE:

When the reservoir tank is empty, or after the AHC pump & motor is replaced or removed, starting engine may cause air inflow in the AHC fluid line. In this condition, the AHC system can not be operated even if the fluid is poured into the tank. If this happens, raise the vehicle height of the front or rear wheel by conducting the active test and activate the AHC pump & motor for about 10 seconds 2007 MY LX470 [08/2006 -        ]; SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: DIAGNOSIS SYSTEM .

(b) After vehicle height adjustment is completed, check that the AHC pump motor is stopped, then stop the engine.

(c) Connect the hose to the bleeder plug for either right or left damping force control actuator.

(d) Loosen the bleeder plug.

CAUTION:

While the fluid is being discharged, the vehicle height is lowered suddenly.

(e) When the emulsified fluid contacting air is discharged, retighten the bleeder plug.

Torque:

8.3 N·m {84 kgf·cm, 73in·lbf}

(f) Repeat the 2 previous steps for damping force control actuator on the rear side.

(g) Repeat the 5 previous step for left and right damping force control actuators alternately.

(h) Start the engine on a level place. Adjust the vehicle height to N position with the vehicle unloaded.

(i) Check that the fluid level in the reservoir tank is within the standard range.

NOTICE:

Temperature should be normal (20°C, 68°F)