# E90 Brake Light Troubleshooting **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [June 21, 2015, 10:29am UTC](https://forums.speedlife.net/t/e90-brake-light-troubleshooting/272539 "2015-06-21T10:29:56Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![cnenf](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cnenf/32/5252_2.png) [@cnenf](https://forums.speedlife.net/u/cnenf)\ **Post date:** [June 21, 2015, 10:29am UTC](https://forums.speedlife.net/t/e90-brake-light-troubleshooting/272539/1 "2015-06-21T10:29:56Z")
I have a 2007 BMW 328i and the brake light has been on and off intermittently. I hooked up my Actron and there were no errors or pending errors so I took it to Towne BMW to take a look. They scanned it with ISTA and found a code for the steering angle and so they re-calibrated the steering angle sensors and told me the rear brakes are worn so the light will keep coming on until those are swapped. So I changed the rear pads, rotors, sensor but it is still behaving the same as before. The car computer gives me the error codes: CC-ID 24, CC-ID 35 and CC-ID 354 which appears to be: 24 Dynamic Brake Control Brake Assist Failed 35 DSC Failed 354 Start Assist Inactive I am not sure if the steering angle sensor would have anything to do with the steering angle sensor. When the brake light is on, I see two other symptoms. 1) Cruise control is disabled 2) Turn signals do not turn themselves off after the turn. One solution I saw on forums was to change the battery. This started after the car sat idle for a while so a weak battery is plausible. I haven’t changed the battery on the car yet (owned for 6 years) and I asked Towne to check the battery and if I should replace it just because of it’s age. They said it tested ok and they do not recommend replacing it. Any thoughts before I take it back for more troubleshooting? Thanks! ---
**Author:** ![Niquehawk5](https://avatars.discourse-cdn.com/v4/letter/n/b9bd4f/32.png) [@Niquehawk5](https://forums.speedlife.net/u/Niquehawk5)\ **Post date:** [June 23, 2015, 6:16am UTC](https://forums.speedlife.net/t/e90-brake-light-troubleshooting/272539/2 "2015-06-23T06:16:14Z")
[http://www.e90post.com/forums/showthread.php?t=344027](http://www.e90post.com/forums/showthread.php?t=344027) Try reading through some of this and see if anything seems to fit your car. I would also check the brake fluid…I know it sounds odd and too simple but sometimes these cars go haywire over the simplest things. ---
**Author:** ![cnenf](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cnenf/32/5252_2.png) [@cnenf](https://forums.speedlife.net/u/cnenf)\ **Post date:** [June 23, 2015, 6:29am UTC](https://forums.speedlife.net/t/e90-brake-light-troubleshooting/272539/3 "2015-06-23T06:29:30Z")
Ahh thanks, I will check the fluid first! I wish the idiot lights could give me a little more info so I knew what to look at. I am guessing from what I read in the other thread, and given that the error codes are the same as before, that the re-calibration didn’t do the trick for the steering sensor and it might need to be replaced. ---
**Author:** ![cnenf](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cnenf/32/5252_2.png) [@cnenf](https://forums.speedlife.net/u/cnenf)\ **Post date:** [January 7, 2016, 10:11am UTC](https://forums.speedlife.net/t/e90-brake-light-troubleshooting/272539/4 "2016-01-07T10:11:27Z")
Turned out to be the steering angle sensor. I watched some youtube videos on how to replace it and determined the repair was over my head so I had Towne BMW fix it. Ended up costing $600 for parts and $600 for labor. As a bonus the new cluster tells me which tire is low which it never did before the repair. Not sure if that was a firmware update or came with the replacement cluster. ---
**Author:** ![Niquehawk5](https://avatars.discourse-cdn.com/v4/letter/n/b9bd4f/32.png) [@Niquehawk5](https://forums.speedlife.net/u/Niquehawk5)\ **Post date:** [January 12, 2016, 8:45am UTC](https://forums.speedlife.net/t/e90-brake-light-troubleshooting/272539/5 "2016-01-12T08:45:42Z")
Cool, glad it worked out aside from the $1200 bill.