1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

BAS/ESP BIG problem

Discussion in 'Suspension, Steering & Brakes' started by Hipolito Gonzalez, Oct 16, 2019.

  1. Hipolito Gonzalez

    Hipolito Gonzalez New Member

    Messages:
    6
    Likes Received:
    2
    Joined:
    Oct 16, 2019
    Location:
    Spain/Ylivieska,Finland/Kotor,Montenegro/Svalbard
    Your Mercedes:
    ML/2001/320
    Hello my friend.
    In my ML 320 (W163) 2001 is having a big problem.
    First, the history is that a friend gave it to me for free. Because he is not using it anymore and at the used-store they were giving him only 800 eur for the car.... NOTHING. . and he thought...I can make somebody happy.... and is MEEEEEEEEEEE jajajaja of course, the car has some problems. I know it.......

    The first and maybe most important problem is this:

    When the car is stopped, the brake light turn on/off sometimes, and the brake pads worn down sometimes..... but the brake pads are OK..... (almost new)
    If I start moving the car slowly, the sound from running with the emergency brake comes on.. Of course, I think the sound is connected with the speed and the light.... when both are ON (speed and light) it makes the sound... after reaching 5 km/h.... the lights are OFF and not problem.....

    But the most important know, and maybe they are relationship, today the BAS/ESP light came ON and after 200 meter driving the RIGHT wheels (i don't know if TWO or only ONE, maybe only one in right back) STOPPED.. BRAKES by themself.... I was driving at about 30 or 40 km/h and the car was braking in the RIGHT SIDE... I controlled the car and after some meters the wheels continue working well. I switched off the car, on again, the light comes ON and I drove carefully to home......

    What is your opinion?

    Sensors on the right? ABS pump?

    My friend told me this issue but he didn't explain well, and he tough the problem was with ETS and for me..... DISABLE the ETS and not problem... but I feel it today and the problem is more dangerous... wheels BRAKING.....

    Thank you for your advises, and excuse me for me bad english....
     
  2. om613

    om613 Senior Member

    Messages:
    1,428
    Likes Received:
    309
    Joined:
    Aug 29, 2015
    Location:
    london
    Your Mercedes:
    S202 C250TD, S123 240TD
    Most likely, this is not a really a 'major' problem.
    A seized caliper piston, a duff ABS sensor or ring, wrong sized tyres per axle; things like that.
    Take it to a place that knows about MBs.
     
  3. AMGeed

    AMGeed Senior Member

    Messages:
    6,513
    Likes Received:
    2,680
    Joined:
    Jan 18, 2009
    Location:
    Poole, Dorset
    Your Mercedes:
    2014 W212 E63 Biturbo
    Hi Hipolito,
    Firstly, you need to check your battery is fully charged. Low voltage can cause plenty of faults.
    If the battery is fully charged and shows at least 12.6v with the engine off, I would suspect you may have a faulty brake light switch or bad wheel speed sensor.

    Ideally the ML needs to have a diagnostic test done using Mercedes Star equipment which can pinpoint the problem.
    This link explains some of the faults that throw the BAS light up.
    http://www.mercedesmedic.com/mercedes-bas-asr-light-on/

    This link is also useful

    http://www.mercedesmedic.com/esp-light-reset/
     
    Last edited: Oct 16, 2019
    om613 likes this.
  4. LostKiwi

    LostKiwi Senior Member

    Messages:
    24,088
    Likes Received:
    13,294
    Joined:
    Aug 25, 2006
    Location:
    Midlands / Charente-Maritime
    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    The others have covered it nicely so....
    Hi and welcome!
     
  5. OP
    Hipolito Gonzalez

    Hipolito Gonzalez New Member

    Messages:
    6
    Likes Received:
    2
    Joined:
    Oct 16, 2019
    Location:
    Spain/Ylivieska,Finland/Kotor,Montenegro/Svalbard
    Your Mercedes:
    ML/2001/320
    Ohhhh thank you my friend

    1.- The tires are new and well sized.
    I will check both. I have a good mechanical and he has year taking care about my W202... with more than 300k km. He did the engine completly for my W202 and is perfect.
     
  6. OP
    Hipolito Gonzalez

    Hipolito Gonzalez New Member

    Messages:
    6
    Likes Received:
    2
    Joined:
    Oct 16, 2019
    Location:
    Spain/Ylivieska,Finland/Kotor,Montenegro/Svalbard
    Your Mercedes:
    ML/2001/320
    The battery is almost new and is not a problem.
    U think the bad wheel speed sensor could be.

    I will do soon (I have a long trip in motorhome in the nexts weeks and my mind is in another placer for fixing it right know, but I needed to ask you for having an idea.

    You are the best
     
    AMGeed likes this.
  7. OP
    Hipolito Gonzalez

    Hipolito Gonzalez New Member

    Messages:
    6
    Likes Received:
    2
    Joined:
    Oct 16, 2019
    Location:
    Spain/Ylivieska,Finland/Kotor,Montenegro/Svalbard
    Your Mercedes:
    ML/2001/320
    Thank you my friend!
     
  8. OP
    Hipolito Gonzalez

    Hipolito Gonzalez New Member

    Messages:
    6
    Likes Received:
    2
    Joined:
    Oct 16, 2019
    Location:
    Spain/Ylivieska,Finland/Kotor,Montenegro/Svalbard
    Your Mercedes:
    ML/2001/320
    Thank you to everybody.
    I bought a used YAW sensor in ebay and I did the replacement myself, very easy, is in the console in the middle, only 4 screw out and fixed.
    First, I take out the bad "computer" and the car was working with this assistance for months, until I bought the "new" (for me, but old) and replace it.

    Thank youuuuuu
     

Share This Page