Question about 1999 BMW 328 Series
My 328ic 1997 seat will go up down and tilt back and forth, but wont slide to the back it is stuck balls to the steering wheel which makes it impossible to drive. any suggestions
The power seat uses DC motors. To change direction the polarity reverses from one direction to another. If you hear the motor "clicking" when you try to drive it forward, even though it is already forward, this signals the motor brushes are making contact to the commutator. So if it is "clicking" the problem is most likely the rearward seat movement switch itself or bad connection from the seat switch to the motor. If there is no "clicking" sound, this indicates no power is reaching the motor, it is most likely hair, dust or trash that has entered the motor and become lodged under the brushes, preventing failure of the electric circuit to the commutator. Unbolt the seat, remove it from the car and be careful with disassembly and cleaning of the motor, they can be difficult to reassemble as they have permanent magnets. I am not certain on your BMW, but many manufacturers use a motor with an open end that you can manually rotate the motor by hand with a piece of square key stock, this may also dislodge any debris stuck under the brushes and allow the motor to operate.
Posted on Feb 25, 2009
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Posted on Jan 02, 2017
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