Calibrate - air suspension (FRONT SUSPENSION)

FRONT SUSPENSION

ADJUSTMENTS

60-1

FRONT SUSPENSION

ADJUSTMENTS

Air suspension system - depressurise 
and repressurise

$% 60.50.38

Depressurise

1. Depressurise suspension using TestBook/T4.

WARNING: The air suspension system is 
pressurised up to: 

l

Up to VIN 106309 - 13.7 Bar (199 lbf/in

2

)

l

From VIN 106310 - 11.8 Bar (171 lbf/in

2

) 

WARNING: Ensure dirt or grease does not 
enter the system. Wear hand, ear and eye 
safety protection when working on the 
system.

Repressurise

1. Repressurise suspension using TestBook/T4.

CAUTION: The air springs must be fully 
pressurised before the weight of the vehicle 
is applied to them.

Calibrate - air suspension

$% 60.90.03 

The air suspension system calibration must be 
carried out after the following components have been 
replaced: 

l

Air suspension ECU

l

Height sensor

l

Body panels incorporating suspension fixing 
points.

Check

1. Connect Testbook/T4 to the vehicle and select 

air suspension calibration.

WARNING: Always wear hand, ear and eye 
protection when working on the air 
suspension system.

Adjust

1. Observe the following cautions before 

calibrating the air suspension system.

CAUTION: The vehicle can be calibrated 
laden or unladen, but gross vehicle weight 
must not be exceeded. Tyres must all be the 
same size and set at the correct pressures.

CAUTION: Ensure the floor used for 
calibration is level and smooth in all 
directions to enable calibration to be carried 
out successfully.

2. Release handbrake and move gearbox selector 

to 'N' position.

3. Roll vehicle backwards and forwards to relieve 

stresses in the steering and suspension.

4. Return gearbox selector to 'P' position.
5. Using Testbook/T4 calibrate the air 

suspension.

6. Models with Xenon headlamps: After 

calibrating the air suspension, use Testbook/T4 
to reset the headlamp levelling ECU and adjust 
the headlamps.

CAUTION: Failure to adjust the headlamps 
using Testbook/T4 will result in the 
incorrect setting of the headlamp 
alignment.

7. Check/adjust headlamp alignment.

 

 + 

 LIGHTING, ADJUSTMENTS, 

Headlamps - align beam.

8. Disconnect TestBook/T4 from the vehicle.