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Unfortunatly there is no way of manual fillling the system. Often times a hard reset will reboot the system. Disconnect the battery terminals, and hold them together for 20 seconds. If the suspension system is related to a software glitch, it should now function. If the is a mechanical failure you'll hav to fix the failed part, and have the module reset by a specialist.
2003 Jetta left rear window blue plastic part of the