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355 suspension light

Discussion in '348/355' started by btween2, May 6, 2018.

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  1. btween2

    btween2 Rookie

    Apr 18, 2018
    12
    #1 btween2, May 6, 2018
    Last edited: May 6, 2018
    anyone have any ideas why suspension light on - checked all 4 actuators and working fine - any chance bosch relay malfunctioning that does pre-start diagnostic - did turn off car at power knob to reset bosch ems and did not help - looking for ideas - thanks
     
  2. Dave rocks

    Dave rocks F1 World Champ
    BANNED

    Nov 23, 2012
    16,047
    Orchard Park, NY
    Full Name:
    Dave Lelonek
    #2 Dave rocks, May 6, 2018
    If you start car 3 times without driving the light comes on. Drive the car and it may go away.
     
  3. btween2

    btween2 Rookie

    Apr 18, 2018
    12
    #3 btween2, May 6, 2018
    thanks for idea but have driven car since light on and started after power off - did blow two fuses (rear lights) at panel under passenger floor - replaced and ok - diagnostic relay right beside area where these fuses are - did spill coffee there quite awhile ago - immediately checked and no sign of coffee spill -
     
  4. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
    14,330
    Sydney
    Full Name:
    Ian Riddell
    #4 Qavion, May 6, 2018
    The suspension system is one of those systems where it's easier to interrogate the computer and extract the fault codes. You've addressed the actuators (the most common fault), so that leaves things like the accelerometers (which are really hard to get to), internal computer problems and power/earth issues. I'm guessing that it's not a power issue as both the computer and the fault light get their power from the airconditioning/HVAC fuse.

    I've had a couple of problems... one where there was a couple of broken teeth on the top of the shock... and another where I got rid of the light by cycling the soft/hard suspension switch and driving in each mode (in combination with ignition off/on). Do you get the fault in both soft and firm suspension settings?

    Anything else not working on the car? e.g. speedo? On the wiring diagram, I even see an input into the computer from a brake fluid pressure sensor... Don't ask me where it is :p
     

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