BMW Z4 Multiple Warning Lights & Heavy Steering Mystery

Hey there! I had a similar issue with my 2013 BMW M3 (I also used to own a 3 series). I've got some experience working on cars, but steering systems aren't my strong suit. Those warning lights definitely sound familiar, mine came on all at once just like yours. The heavy steering and vibration were exactly what I experienced. Took it to my regular workshop and they diagnosed a faulty coding in the steering angle sensor. The fix wasn't too complex, but it needed their diagnostic equipment. Total bill came to 195 Euro, which included recalibration and coding. Can you share more details about when these symptoms started? Did you notice anything specific that triggered it, like hitting a curb or after a battery change? This info would help determine if your case is similar to what I dealt with.

Thanks for sharing your experience! My Z4 has 101408 KM on the clock and was just serviced last month. Had a bit of trouble with multiple warning lights too, but in my case, it turned out to be a failing wheel speed sensor that was causing all the chaos. Had the same symptoms you're describing, felt like I was wrestling with the steering wheel! The ABS module was getting wonky readings, which triggered that cascade of warning lights. My mechanic suggested checking both the wheel speed sensors and steering angle sensor since they're connected in the system. Might be worth looking into both components before jumping to conclusions about the steering angle sensor alone. Did you notice if the symptoms get worse after driving for a while or in wet conditions? That could help narrow things down.

Hey again! Thanks for sharing those details about your Z4. Actually, in my M3's case (now at 98K KM), the symptoms were pretty consistent regardless of weather or driving duration. Unlike your wheel speed sensor situation, mine was definitely the steering angle sensor, I initially thought it might be something else too. Just remembered something that might help, before all the warning lights came on, I noticed the steering felt slightly "notchy" for about a week. Like there were subtle catches when turning the wheel. Initially wrote it off as nothing serious (big mistake!). The full-blown symptoms with all the warning lights hit suddenly while I was driving on the highway. Your experience with the wheel speed sensor is really interesting though. Makes me wonder if I should've had my mechanic check those too, just to be thorough. The fix worked for me, but it's always good to know about other potential culprits. These BMWs can be tricky with their interconnected systems, when one sensor goes wonky, it can trigger all sorts of false alarms. Anyone else had similar experiences with their Bimmers? Would be great to build up a knowledge base for these issues.

Really appreciate you sharing those extra details about the notchy steering, that's super helpful! Come to think of it, I've been feeling something similar for the past few days, but chalked it up to the cold weather. Definitely won't ignore that warning sign now. My situation's actually a bit different from yours since I haven't hit any highways lately, but the symptoms started showing up during regular driving. I'm gonna get it checked out tomorrow, will have them look at both the steering angle sensor and wheel speed sensors just to be safe. That's the thing with these BMWs, one small issue can trigger a whole Christmas tree of warning lights! Thanks for mentioning the repair costs too. At least now I have a rough idea of what I might be looking at. I'll update this thread once I get it sorted out, might help someone else dealing with the same headache down the line. These technical discussions are exactly what I was hoping for when I posted this question!