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E85 / E86 Z4 (2003-2008)
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Old 06-22-2011, 07:43 AM
EarlyRider EarlyRider is offline
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Location: Maryland
Join Date: May 2010
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Mein Auto: Z4
Z4 Electronic Steering warning light

My wife's 2007 Z4 had a one time (so far) illumination of the Electronic Steering Failure warning light along with no power steering assist for her short drive home. This happened a few days ago and has not happened again, yet. Steering is fine and no light. Has anyone else had this occur and was it a fluke or the beginning of an electronic steering component failure? Appreciate any experience from other owners.
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Old 06-23-2011, 10:56 AM
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Swanicyouth Swanicyouth is offline
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Location: Limerick PA
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Mein Auto: M Roadster
Mine failed one day and never worked again in my 03. Was a 5k $ repair under warranty at the time. Part of the reason I eventually traded it for an M, as they have regular PS.
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Old 06-24-2011, 05:03 AM
pokeybritches pokeybritches is offline
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Mein Auto: G-Power & ESS Z4Ms, VF Z4
I had a battery terminal connection come loose and momentarily break contact when I hit a bump, causing the EPS light to illuminate. However, I never lost power steering. The light went away after tightening everything down and restarting the car.

Even though a battery connection probably wasn't the cause of your problem, the light can illuminate under certain electrical surges/interrupts in power supply and then reset itself upon a restart. If it becomes a recurring problem, I wouldn't isolate my troubleshooting to the EPS.
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