5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
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on the drivers seat switch often times the plastic panel it is housed in comes loose or breaks. As a result the connector comes loose or gets broken from the switch. this is the 1st thing I would check.
if you can hear the motor run but the headrest doesnt move then you probably have a stretched drive cable. if thats the case you can either replace the cable or repair it.
Follow this link if you decide to repair. This shows the bottom portion of the seat but the headrest is done the same way. Remove the seatback to find the headrest cable.
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