Two years ago in the summer, I drove my car back on the highway and the steering wheel was very hard to move. It was a sticky steering situation. The weather was also very hot. This problem has continued even when I am driving slowly. The weather temperature seems to be the critical factor. Yesterday, I drove the car and it steered perfectly. The temperature was in the 70S. Today, it drove fine in the a.M. but in the pm when the temperature reached above 80, the steering was "sticky" again. I have found many posts on line describing this identical problem. The car is a 2004 BMW Z4. This problem has happened within the last 2 years but the difference between the drive handling yesterday and today was very obvious.

- Reisterstown, MD, USA

Steering became difficult. When trying to turn the steering wheel it would stick or become hard to move the wheel. Then the steering wheel would stick in another position and become hard to turn again. This did not occur all the time but enough to be annoying. This problem may cause an accident.

- Oak View, CA, USA

While driving down the highway around town, I noticed the steering becoming"sticky". it was hard to keep the car in my lane. This continued for a couple of weeks and I took the car to a BMW repair shop and was given the news that I need a new steering column with power assist and that it was going to cost about $3800. Needless to say, it is not something that you can ignore. After seeing all the problems with power steering assist I am dumbfounded as to why BMW has not brought this to owners attention. The repair costs are astronomical!!! this is ridiculous. BMW should make owners aware of the potential problem and fix it. This will definitely be my first and last BMW.!!!!!!!

- Augusta, GA, USA

When it is hot outside the steering becomes rough, awkward, and potentially dangerous. It happens at speeds greater than 30 mph. The steering wheel will become "stuck" in a certain position and requires greater than normal force to move from that position. Using greater force to move the steering wheel from the "stuck" position creates the potential for over-steering.

- Fairfax Station, VA, USA

Power steering did not move smoothly. On hot days the steering binds up. The steering wheel is hard to turn. A definite detent is felt in the steering, this detent requires extra effort to overcome, commonly causing oversteer and a back and forth track down the road. As car rolls down highway the small movements to go straight are unattainable as the steering is hard to turn as areas of higher resistance require extra force upon the steering wheel, and when the resistance is overcome the car steers to far in the desired direction and when a correction is attempted the same situation occurs. When the car is hot and this issue is present it is not possible to drive the car in a smooth straight direction. In attempting to maintain control I have on multiple occasions been nearly or slightly off the roadway and narrowly avoided several accidents.

- Bedford, IN, USA

Steering has become loose to the point where it is hard to keep the car on the road and find that over corrections are happening. Was told must replace the steering column at a cost of $3200. It is a widely reported problem that BMW should fix. It is a safety issue.

- Winchester, VA, USA

I was driving on the interstate at a moderate speed. When attempting to change lanes the steering became "sticky" and it was difficult to turn the steering wheel. This has happened multiple times since this incident. It appears to be worse when the weather is hot. In reading various BMW forums I found that this is a common problem with the 2003 Z4's and the NHTSA has or is conducting an investigation. I understand BMW has corrected the problem on later models. This really creates a dangerous driving situation and I am fearful of driving this car. Is there any action being taken by the NHTSA or BMW? I have contacted BMW but they will not acknowledge that there is a problem.

- Rock Hill, SC, USA

Apparently there is a bearing inside of the steering column and it is not a sealed bearing (poor design). The grease leaks out of it and it becomes very difficult to steer and dangerous. The bearing is not replaceable so you have to replace the entire steering column at a cost of $3,000 to $4,000. The warmer the temperature the harder the steering. I won't even let my wife drive the car for fear she will have an accident. I even have trouble keeping it on the road at times.

- Mechanicville, NY, USA

I purchased this car used and have had problems with the steering since buying it 5 years ago. Had it at a BMW repair store they have informed me the steering column will need to be replaced for $ 3000 plus. After doing some research this is a common problem with this BMW. Why has BMW not issued a recall? this could be a severe problem that could cause accidents and death while you are driving! [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Cincinnati, OH, USA

I'm having a safety issue with the steering being sticky. It is especially problematic at higher speeds and requires reasonable force to correct. This, in turn, causes over-steering constantly making the car very dangerous to drive on the highway. Car is low mileage: Under 36,000.

- Kennesaw, GA, USA

My steering column turns similar to the fan control switch on the Z4 from detent to detent and not smoothly like a volume control on a radio. If you reach forward to the fan control console and turn it you will note that it does not turn smoothly it goes from stop to stop to stop about every 5 degrees. Each stop is called a detent. So as you turn the knob it starts in a detent then as you turn it clicks into the next detent and stops then you have to twist a bit harder till it clicks into the next detent. That is how my steering column acts when it is hot outside. It clicks into one detent and that position may not keep you driving straight down the road. You try to correct it and it will not turn unless you push extra hard then it goes past the point that would keep you going straight down he road into the next detent and you are progressively headed off the other side of the road. As you try to correct it by turning back, it will not smoothly turn back, it resists till you push extra hard then it goes past the point that would keep you going straight and stops in the next detent and now you are headed off the road in the other direction.

- Berkeley Springs, WV, USA

The steering sticks meaning it becomes unresponsive and requires extra effort on my part to move it again. I have to continue to move it else it sticks and I lose control for about a second. Very scary at high speeds. Basically if going in a straight line and I want to turn it is not smooth and I have to almost fight with it to turn.

- Springfield , MA, USA

Chronic problem with the steering being sticky when the weather is warm or when the car sits in the hot sun. The steering wheel when held steady driving down the road seems to stick in an exact position and if the weather is very warm the stickiness is such that when the car needs steering correction to stay in the driving lane that significant pressure is required to unstick the position of the steering direction. Once the driver's pressure causes the steering wheel to become unstuck the wheel will suddenly veer in the direction the pressure was applied, ie. Toward oncoming traffic or towards the ditch until the driver can quickly counteract the sudden release of the unstuck steering wheel. When the weather is particularly warm the car is no longer safe to drive for fear of loss of control. This car was purchased new from the local BMW dealership and driven almost exclusively by my wife since new.

- Champlin, MN, USA

I bought my used BMW Z 4 three years ago from a private party with 13,500 miles. Car is in showroom condition but when the temperature rises and the car sits in the sun, I have issues with the steering wheel sticking and locking. I find myself constantly fighting the steering wheel in hot weather and have no confidence in the steering capability of my vehicle. My last episode was last week when the temperature was in the 80's and the car sat out in the sun all day while I was at work. This car has under 19,000 miles on it and I find it unacceptable that BMW will not address this issue and do a recall immediately to address this common problem. I hope it doesn't take a fatality to occur before a recall is issued for this steering malfunction.

- Berlin, CT, USA

Steering got stuck, and car slid left to right.

- New York, NY, USA

Date listed is an approximation... I bought the vehicle used and during the hot weather the steering felt like it was sticking. Now that I've owned the vehicle for a couple of years I can tell that when the vehicle is left in the hot sun the steering "sticks" which causes it to move erratically. This happens no matter the speed and is very dangerous. Due to the sticking I am very wary driving the car when the weather is hot and the car sits in the sun. I read that there is an investigation into this issue and want to include that my car is experiencing the same issue as listed in the investigation. This is a dangerous defect and the NHTSA should force BMW to fix the problem on the affected vehicles. I should not have to drive a vehicle that enough evidence is available to confirm there is a manufacturer defect.

- Barrington, NH, USA

The contact owns a 2003 BMW Z4. The contact stated that while driving approximately 45 mph, the steering wheel exhibited a jerking motion when attempting a turn. The contact applied force to the steering wheel in order to continue driving. The failure occurred only in hotter weather temperatures. The vehicle was not diagnosed or repaired. The manufacturer was notified of the problem. The approximate failure mileage was 36,000.

- Kennewick , WA, USA

The contact owns a 2003 BMW Z4. The contact stated that while driving at various speeds, the steering became sticky and impacted the drivers ability to control the vehicle. The failure recurred numerous times. The vehicle was taken to a dealer for diagnosis but the technician could not replicate the failure. The vehicle had not been repaired. The VIN was unavailable. The failure and current mileage was 79,650.

- Columbia, SC, USA

At ambient temperatures above 75 deg the steering gets stiff and feels sticky. After making a turn the wheels do not return to the center position on their own but require driver to turn steering wheel back to center. Driving in a straight line requires constant correction because the steering binds and causes the driver to oversteering in order to overcome the stiffness.

- San Diego, CA, USA

Steering wheel sticks (still does as of March 30, 2013) and vehicle becomes hard to steer and control, especially when the weather is hot.

- Winston-Salem, NC, USA