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SLK 230 ABS BAS lights on dash.

Discussion in 'Suspension, Steering & Brakes' started by peter-flint, Nov 25, 2012.

  1. peter-flint

    peter-flint Senior Member

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    Joined:
    Jun 15, 2010
    Location:
    North Wales
    Your Mercedes:
    R33 GTR Skyline,SLK 200 and a rockin'n'rollin Sprinter
    My better half told me these warning lights are on, checked the pads for wear and all in order, nowhere near the wear sensors. Checked the fuses (L/H side of engine compartment) and found a 30 amp fuse had blown (marked Brake Boost), replaced the fuse but warning lights still on.
    What is and where is this Brake Boost unit found. Is it a replaceable unit ?
    Would it's failure cause the fuse to blow with no apparent lose of brake effort.
     
  2. NW_Merc

    NW_Merc Banned

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    Location:
    Oop Norf
    Your Mercedes:
    Mercedes W202
    I'd get the fault codes read
     
  3. Naraic

    Naraic Moderator

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    Joined:
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    Your Mercedes:
    2005 CL500.
    As above, get the codes read. But the fuse blew for a reason. Did it blow again? It may just need resetting.
     
  4. jibcl500

    jibcl500 Senior Member

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    Location:
    Cambridgeshire
    Your Mercedes:
    CL500,ML55,SLK280
    Take car for a short drive, turn off remove key restart and drive lights should go out.

    jib
     
  5. OP
    peter-flint

    peter-flint Senior Member

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    Joined:
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    Location:
    North Wales
    Your Mercedes:
    R33 GTR Skyline,SLK 200 and a rockin'n'rollin Sprinter
    The fuse hasn't blown again, therefor I'm thinking the "Brake Boost" unit may be U/S.
    Took it for a short run, steering turned from lock to lock, still have the lights on the dash. :(
     
  6. NW_Merc

    NW_Merc Banned

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    Your Mercedes:
    Mercedes W202
    You're going to have to get the fault codes read otherwise it's going to be a very expensive and time consuming guessing game
     
  7. OP
    peter-flint

    peter-flint Senior Member

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    Location:
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    Your Mercedes:
    R33 GTR Skyline,SLK 200 and a rockin'n'rollin Sprinter
    Will do, Thanks to all. :)
     
  8. Liseybabyx

    Liseybabyx New Member

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    Joined:
    Oct 28, 2012
    Location:
    West Midlands
    Your Mercedes:
    Slk/2004/2.3
    Hi. I have the same problem.
    Went to use the car on Thursday and the ABS, BAS & ESP warning lights all came on.
    They have stayed on since after trying the lock to lock reset and checking the pads which are nowhere near the limit.
    Please help.
    I also charged the battery and still no luck.

    Thanks in advance

    Lise
     
  9. Liseybabyx

    Liseybabyx New Member

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    Joined:
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    Location:
    West Midlands
    Your Mercedes:
    Slk/2004/2.3
    Also the brake lights work as normal
     
  10. television

    television Always remembered RIP

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    Joined:
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    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    As you have the ABS lamp on, you have a ABS fault with a wheel sensor probably at fault, You can ignore the BAS and ESP as they cannot work without the ABS working,,,,far cheaper to get a STAR read out from an Indie
     
  11. EmilysDad

    EmilysDad Senior Member

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    Location:
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    Your Mercedes:
    ML350
    I know it's not the same car (but it's a Merc underneath), but EmilysMum's Smart put the ESC & ABS lights on. A new & adjusted brake switch sorted it
     
  12. antonysobey

    antonysobey New Member

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    Location:
    Malaysia
    I had this problem and solved it completely by replacing the brake light switch located behind the footbrake under the dash.

    Happened about 3 years ago , since then no further problem.

    By the way, the replacement switch, obtained from a genuine Mercedes Benz garage, was marked "made in China" !!!
     

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