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Thread: HELP! TCS, ABS, and RED BRAKE light after changing rear pads and brake sensor

  1. #1
    Join Date
    Jun 2017
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    Ohio
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    My Cars
    2004 325CI

    HELP! TCS, ABS, and RED BRAKE light after changing rear pads and brake sensor

    Today I changed out my rear brake pads and rear passenger side brake wear sensor on my 2004 325CI Manual Coupe. After putting everything back together I've got my traction control light, orange ABS light and RED BRAKE light on.

    I've looked around the forums before posting and wasn't able to find anything similar to my situation with a RED brake light.

    My brake fluid is at max and my hand brake works just fine now.

    So far I've tried stomping the brake to lock them up(worked for a guy to get ABS to kick in and take the lights off in another thread) spinning the tires for an excessive amount of time(also worked for another guy) and I've restarted the car quite a few times on my way to work.

    If anyone has any other suggestions or ideas on what could've caused this after changing my pads, I'm completely open to hearing them.

    Going into work and wont be able to respond for a while so thanks in advance to anyone who comments!

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
    Join Date
    Nov 2010
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    05 325it 05 M3 95 318is
    Welcome to the Forum!

    Well the best way to find out is get the ABS/DSC ECU scanned, that will tell you what's wrong for sure.

    My first thought is when you pulled the sensor, you accidentally unplugged the ABS sensor. This will set those lights on, also did you open a bleeder valve?
    Darin
    Current:
    05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon (Original Owner)
    05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, Euro Infra-Rot front windshield and a trunkliner! Mr. Go_Fast (Stored for the Winter, 2nd Owner)
    95 318is Montreal Blue Met (297)/Beige(K1SN) a work in progress - Winter Car! (10th Owner; That is what happens when it gets passed around by Soldiers!)
    Past:
    84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/375k+! (2nd Owner)
    91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 motor, such a beater, but great on gas! Best was 38 MPG (2nd Owner)
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    79 525 euro Green/Green RIP
    79 318 Silver/Black - The first one that got it all started
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