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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.

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Old 06-12-2013, 01:33 PM
mikecw123 mikecw123 is offline
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Location: Florida
Join Date: Jun 2013
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Mein Auto: 2003 Z4
DSC & Brake light

My 03 Z4 has 103,000 milies. I was driving and the DSC light and the BRAKE light came on and stayed on. The manual says take it to the dealer. Is this a big problem?
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Old 06-15-2013, 08:04 AM
Jstic Jstic is offline
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Location: CT
Join Date: Mar 2013
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Mein Auto: 2006 Z4 3.0i
Could be any number of things tripping those lights. You need to pull the fault codes to narrow it down. First thing to do is check to see if your battery is holding enough charge.
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Old 06-15-2013, 08:19 AM
mikecw123 mikecw123 is offline
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Location: Florida
Join Date: Jun 2013
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Mein Auto: 2003 Z4
DSC light and Brake light

Thanks for the response. The alternator and the battery are new so I can probably rule that out. I'll have to take it to a repair shop to have the codes checked. Here in Clearwater that's $100.
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Old 06-15-2013, 10:49 AM
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vintage42 vintage42 is online now
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Location: Louisville, KY
Join Date: Jun 2007
Posts: 2,656
Mein Auto: 1997 BMW Z3 1.9 5MT
You could buy an Ultragauge for $60.
Even if you did not want to mount and use it for its other functions, it would read the trouble codes.
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Old 06-15-2013, 12:36 PM
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shipkiller shipkiller is offline
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Location: Virginia Beach, VA
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I do not think the DSC is part of the ODB-II system, so I do not think Ultragauge or any other ODB-II reader/scanner will see those codes. I could be wrong....

You can find out by taking your car to AutoZone or AdvancedAuto. They will hook up an ODB-II reader/scanner and read the codes for free.... Seven days a week...
How does something immoral, when done privately, become moral when it is done collectively?
Furthermore, does legality establish morality?
Slavery was legal; apartheid was legal; Stalinist, Nazi, and Maoist purges were legal. Clearly, the fact of legality does not justify these crimes. Legality, alone, cannot be the talisman of morel people. - Walter E. Williams
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Old 06-15-2013, 02:14 PM
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Clearancediver Clearancediver is offline
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Mein Auto: 2004 Z4, 2009 Nomad mc
DSC & Brake light

One thing that you might like to consider doing yourself is cleaning the wheel sensors. You have to remove your tire but once you have done that the wheel sensor is easily accessible. Allen bolt holds it in ... Remove bolt and wiggle and it comes out fairly easy. Clean with brake cleaner and replace. Do all four sensors. If it was dirty wheel sensors causing the fault it should clear the visual fault lights. The fault will still be in memory and can read/cleared. Dirty wheel sensor connections could also be a possibility but dirty wheel sensors more likely.

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