Check liftmodule for code 820.
Check if there is oil present in the axle.
Remove the covers with the connections from the axle, if oil present possibilty that coils hydr motor are damaged.
Underneath this covers are also cableconnections from the motors
Check coil resistance u v w, should be around 4 milliOhm and al 3 must be the same !! USE a milljohm meter and not a regular DMM
Had the same issue , had to replace axle with with another.
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