Z4 sticky steering fix $285 - Bimmerfest - BMW Forums

Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E85 / E86 Z4 (2003-2008)

E85 / E86 Z4 (2003-2008)
E85 Z4 Roadster, E86 Z4 Coupe, E85 Z4 M Roadster, and E86 Z4 M Coupe talk with our BMW gurus here.

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 07-24-2012, 05:03 PM
Stromtech Stromtech is offline
Registered User
Location: Victoria BC
Join Date: Jan 2012
Posts: 77
Mein Auto: 2004 Z4 3.0 6 speed
I have an opinion or two...

I believe it is definitely related to the worm gear in the electronic assist unit.

What I don't understand is why the symptoms don't occur when the vehicle is new. From what I have read it seems to happen to cars several years old. Perhaps someone can tell me I'm wrong and their car suffered when new? If it's true that new cars are OK then what changes in the worm gear with time? Would dismantling, cleaning and new lube fix it for a few more years? Is this possible?

It gets worse at high speed as the steering boost is diminished (variable boost)
It definitely gets worse if the car is parked in the sun with the roof and windows closed but why would new cars not have this same heat issue? It seems to happen after driving for a couple of hours even in cool temperatures so time seems to matter, perhaps time creates heat in the servo and worm gear.

There should be a general recall for this issue as it is a design fault...the NHTSA let the owners down big time...perhaps they were afraid of being litigated to death by BMW.

Shame on BMW for not stepping up.
Reply With Quote

See More Related BMW Stories

sticky steering fix, z4 steering problem

Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E85 / E86 Z4 (2003-2008)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -7. The time now is 04:03 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2001- VerticalScope Inc. All rights reserved.