Z4 Steering - Possible fix? Please try it. I want to know if this works.
I have had my 2004 Z4 for about 5 years. I quickly noticed the steering issue that many other have complained about and tried to fix. I thought someone described it very well when they said the power assist seems to come and go as you drive, causing the car to constantly over-correct as you drive down the road...usually in a somewhat zig-zag path.
I only drive my car in the summer and store it in my garage in the winter. I always disconnect the battery for storage. A couple of years ago, i took it out of storage and a few of the lights on the instrument panel no longer worked. On example was the outside temperature indicator which only had a couple of dashes instead of numbers. I didn't worry about it.
Eventually, I took the car in for routine service. The service writer informed me that everything checked out good, but a few sensors on the car needed to be reset since apparantly the battery had become too weak or had been disconnected at some point. This caused the sensors to require resetting. The service technician reset the sensors so all of my indicators on the instrument panel then worked. He also mentioned that if it happened again, reinitialize the sensors by turning the steering wheel all the way to the left and then all the way to the right (or vice versa). That process will reinitialize the sensors (according to him).
That was in June 2011. It wasn't long after that I realized I didn't have the steering issues anymore. My assumption or hope is that reinitializing the sensors also apparently reinitialized sensors in the steering system. And these sensors apparently make the system work properly.
I have no proof of this other than the fact that my car doesn't have the problem any longer and driving is much more pleasurable.
C Harter (email@example.com)