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Old 08-22-2004, 11:35 AM
GreatDisappoint GreatDisappoint is offline
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Location: FL
 
Join Date: Aug 2004
Posts: 33
Mein Auto: 2004 BMWi Auto Trans
545i Auto Trans - 2004 (FL): Jolt/Jerk/Clunk

545i Auto Trans - 2004 (FL): Jolt/Jerk/Clunk

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Do these things sound 'normal' to you?

BMW and the dealer service facility state that these conditions are 'normal':

From a speed of 30 mph (speed offered as example), as the gas pedal is released, to bring the vehicle to a stop or lower speed, when coasting, and/or while braking, as the vehicle begins to slow, the driver experiences a jerk/jolt forward a number times as the vehicle shifts/lurches down from gear to gear (the sensation seems to be caused by an abrupt increase, and then decrease in speed; at least that is what it if feels like, and sometimes it is associated with a clunking sound) as it comes to a final stop. Thus, as the transmission shifts downward from gear to gear so the passenger is correspondingly jerked.

[The above condition is said to be either related to [1] emission controls, or [2] “attributable to the tight relationship between the ‘valvetronic’ engine and the ‘steptronic’ transmission” as the reason for it.]

From a complete stop, when placed in reverse, and after releasing the brake pedal, without depressing the gas pedal, the vehicle suddenly moves in a backward motion and reaches a speed in excess of 5 miles per hour.
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