Test Conditions

Information 

Always pay particular attention to the following before raising the vehicle: 

• The levelling system must be deactivated before raising the vehicle (the levelling system button must be pressed and held for at least 10 seconds).
• If a transmission range has to be engaged while the vehicle is raised, the levelling system must first be deactivated using the PIWIS Tester: 

To do this, >>Levelling system/PASM<<>>Drive links/checks<<>>Activate/deactivate levelling system (without wheel rotation detection)<< must be selected in the control unit overview.

The value "Deactivate levelling system (permanently)" must then be selected and the function performed by pressing "Start"/F8.

The levelling system must be reactivated when the work is complete: 

To do this, >>Levelling system/PASM<<>>Drive links/checks<<>>Activate/deactivate levelling system (without wheel rotation detection)>> must be selected in the control unit overview.

The value "Activate levelling system" must then be selected and the function performed by pressing "Start"/F8.

• All functions (e.g. bleeding/filling) of the PASM control unit are deactivated as soon as the levelling system has been deactivated using the function >>Activate/deactivate levelling system (without wheel rotation detection)<<.

• Transmission must not be in limp-home mode.
• Warm up transmission in lower load range. Switch all transmission ranges several times while doing so.
• Read out the ATF temperature using the PIWIS Tester. 
• ATF temperature: 30 - 50°C.
• Selector lever is in position P.
• Parking brake actuated.
• Test and filling process at idle speed.
• Air conditioning and heating switched off.
• The ATF temperature must not be higher than 30°C at the beginning of the test.
• If the ATF temperature is higher than 30°C, let the transmission cool down.