When I apply a jumper the car still won't start
When I apply jumper cables from another car the Z still won't start and keeps clicking just like when the battery is dead. All electrical turns on but it appears that it still is not getting enough electricity
Bad starter or bad battery connections - clean and tighten the battery cable ends. A battery with an internal short can make it hard to jump start the car.
sounds like a starter solenoid- if you keep "applying" jumper cables to your BMW you are going to fry some electronics in there- then all bets are off-
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