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  1. #1

    Join Date
    15 May 2021
    Location
    DC Area
    Posts
    2
    Saab(s)
    2007 9-5 Aero, 1999 9-5 SE
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    1999 Saab 9-5 SE ABS Lights

    I have the ABS lights on and could really use some advice. Car is a 1999 Saab 9-5 SE Ö 135k miles

    After starting the car and the car going through its checks, there are no dash/warning lights on at all. When I start driving (either forward or reverse or rolling in neutral) and at 8 mph (according to my GPS) the ABS lights come on, including Brake, TCS and ! The speedo, tach, and other gauges work throughout. The control module has been checked good by BBA, the 4 wheel speed sensors are new, and the tone rings are clean. The #26 7.5 amp and #1 60 amp fuses, tire pressure, brake fluid and brake thickness are all good. Iíve checked the continuity and voltage on the front speed sensors Ė both check good. I tried disconnecting each speed sensor, one at a time, and each resulted in all the lights coming on. The are no codes on an OBD and unfortunately I donít have a Tech II.

    I looked through the forums and didnít see a situation like mine. I have a state vehicle inspection coming up and would appreciate any advice.

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  2. #2
    Saab Addict
    Join Date
    10 Apr 2017
    Location
    Denham, England
    Posts
    525
    Saab(s)
    2011 2.0 9-5 Aero
    Thumbs Up:   70
    Sounds like a wheel speed sensor or the associated reluctor ring. The reluctor rings crack, being clean is no indication that they aren't cracked. The ring forms a magnetic circuit and the crack breaks that circuit.

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  3. #3

    Join Date
    15 May 2021
    Location
    DC Area
    Posts
    2
    Saab(s)
    2007 9-5 Aero, 1999 9-5 SE
    Thumbs Up:   0
    Thanks for the feedback. Things are pointing toward a bad reluctor ring. I take it there is no way to test the rings while still on the car? The CV axles for the early 9-5s aren't available anymore, but looks the the rings are.

    Thanks. Regards, Gary

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  4. #4
    Saab Fan
    Join Date
    29 Mar 2015
    Location
    Cape Cod Mass.
    Posts
    20
    Saab(s)
    2002 95 Aero manual Black, 2001 95 Aero Silver, 1999 Viggen
    Thumbs Up:   0
    Quote Originally Posted by shipleg View Post
    Thanks for the feedback. Things are pointing toward a bad reluctor ring. I take it there is no way to test the rings while still on the car? The CV axles for the early 9-5s aren't available anymore, but looks the the rings are.

    Thanks. Regards, Gary
    Try Goldwing Saab parts in Hastings NY.

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  5. #5
    Saab Addict
    Join Date
    10 Apr 2017
    Location
    Denham, England
    Posts
    525
    Saab(s)
    2011 2.0 9-5 Aero
    Thumbs Up:   70
    Quote Originally Posted by shipleg View Post
    Thanks for the feedback. Things are pointing toward a bad reluctor ring. I take it there is no way to test the rings while still on the car? The CV axles for the early 9-5s aren't available anymore, but looks the the rings are.

    Thanks. Regards, Gary

    Yes there is a way of testing the rings. Put the car on a lift, switch on and then spin each wheel separately, the one with the cracked reluctor should be the one that brings the light on. However, I don't know enough to be certain of that and it isn't a practical DIY approach anyway.

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