Question about 2007 BMW 525xi Sedan

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2004 BMW 525i Active Steering problem

As soon as the car is started the computer shows a warning " Active Steering not Active" But the steering works ok. What causes theis problems and how to correct?

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  • murale n Oct 29, 2008

    Very informative. I did not know about this system so much. Thank you ver much. Thanks to all at FixYa.

  • Anonymous Mar 24, 2014

    2009 bmw 120i has the phone button on steering wheel and radio but Bluetooth option doesn't show in menu or when I hold the phone button? my iPhone doesn't see the cars Bluetooth either? how do I activate it?

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The Active Steering system uses a Papst brushless dc motor to rotate the cage (ring gear) containing the planet gears a planetary gearbox at the bottom of the steering column. The motor effectively changes the steering ratio by increasing or decreasing the amount of gearbox output rotation relative to changes in the steering-wheel angle input. The resulting ratio depends on the speed of the car. For instance, a low 10:1 ratio gives high maneuverability for parking in tight spaces, with less than two turns of the steering wheel, lock to lock. To track straight at highway speeds, where even a small steering input can produce a quick sideways acceleration, the electric drive boosts the ratio to 20:1. Cars without Active Steering typically have ratios halfway between (specifically 14.1:1 for the BMW).
....
Now, if your active steering does not work , the car reverses back to power steering and the ratio is 15.1:1 so the car can be driven but the "active steering " is not working and still needs to be fixed.
It the unit needs to be replaced and your car is not under warranty, the repair cost may reach 5000 dollars.

Posted on Oct 29, 2008

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Or refer to your owners manual where it shows how to fix it by turning the wheel thus saving $5000 and the stress of reading an ignorant comment

Posted on Dec 16, 2014

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