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      04-28-2017, 07:48 PM   #1
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Drives: 2011 Interlagos Blue M3 ZCP
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car lurches while driving, sets off some errors

Earlier today my car was acting strange while driving. The car would lurch foward/would not drive smoothly at points while moving and the transmission (DCT) would feel delayed during some shifts. Then after a bit, I got errors for Brake and Drive systems malfunctioning, with the ABS, BRAKE, and DSC lights turning on.
I restarted the car and after a minute, they went away, but after not even a mile of driving, the lurching started happening and the same errors came back up. I tried disconnecting the battery to see if that would help but it didn't. I also noticed that only my driver side window doesn't auto roll up anymore. All of these issues were today and if anyone could point me into the right direction, that would be great. The car has 40,000 miles and I installed spacers last friday
There was also an error for start-off assistance inactive on top of the driving stability and and DBC
Also, one or two times during braking earlier physically depressing the pedal would feel weird. This is definitely a brake issue but there are a lot of issues that all came up at the same time so I'm not fully sure yet before I bring it in.
final edit: I've slowly narrowed it down to a wheel speed sensor since I noticed a couple days ago that my steering wheel was off center slightly. Would this explain all of these issues like the lurching while driving?

Last edited by IBM3; 04-28-2017 at 08:11 PM.
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      04-28-2017, 09:14 PM   #2
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Drives: 2011 E90 M3
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Maybe try removing the spacers. While you are there physically check to make sure the speed sensors are visually ok
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