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  1. #1
    looper_1234's Avatar
    looper_1234 is offline Porsche Activist
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    PSM failure, ABS failure both lit up today

    funnyly enough, i was on my way to the dealer to sort out some other problem when this happend.

    the dealer just reset the computer, and said its more or less a signal hickup due to the coldness.

    which sounded lame to me at the time, but i searched here which seemed to indicate; indeed this is the case.

    anyone else who's experienced this which turned out to be serious ?


  2. #2
    Luongo is offline Porsche Prophet
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    Re: PSM failure, ABS failure both lit up today

    Quote Originally Posted by looper_1234 View Post
    funnyly enough, i was on my way to the dealer to sort out some other problem when this happend.

    the dealer just reset the computer, and said its more or less a signal hickup due to the coldness.

    which sounded lame to me at the time, but i searched here which seemed to indicate; indeed this is the case.

    anyone else who's experienced this which turned out to be serious ?
    I had the exact same thing happen to my Cayman on two separate occasions. Both times, restarting the car cleared up the error codes. Both times, it was very cold and the ABS light came on when I braked hard on a somewhat icy road, immediately followed by the PSM light. My dealer said something similar to your dealer and no services were needed.

  3. #3
    hikejohn is offline Guest
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    Re: PSM failure, ABS failure both lit up today

    I am from the north and very use to cold places....this winter is has had extensive cold periods....in my opinion cold weather should affect braking/ABS systems...the PCM is another story....but my issues were finally resolved by having the dealer load the latest software/firmware, clean out the memories in the various control units and doing a clean install of the latest software....all my flakiness went away...knock on wood that it stays away. Another possibility on the ABS side is if ice/snow got on the wheel sensors....particularly if they were old...I have seen that on a few of my cars....but never ABS lights coming on just because its cold outside....

  4. #4
    MrCabDrvr's Avatar
    MrCabDrvr is offline Porsche Enthusiast
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    Re: PSM failure, ABS failure both lit up today

    I just experienced the same thing this evening at the airport. In addition to the PSM and ABS Failure messages, the airbag light came on and System Fault Airbag message came on. I find it hard to believe that it is temperature related as it's 50 degrees and I drove the car in much colder weather. Will be dropping off at the dealer tomorrow morning.

    Has anyone else had the airbag message come on at the same time as the other failure messages?

  5. #5
    Rotty is offline Porsche Chatter
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    Re: PSM failure, ABS failure both lit up today

    First time I had it the dealer reset it but it came back and needed a new ABS sensor ( not expensive )

    it happened once again after I got stuck in snow but that cleared itself

  6. #6
    eyh8erc is offline Porsche Person
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    Re: PSM failure, ABS failure both lit up today

    For the first time, my Cayman S's PSM failure and ABS failure both lit up on 26May2010. My car was last serviced in Oct 2009 when I had changed all brakepads.

    The car was in the sun for around 2 hours around 33C heat when I had it parked in an uncovered carpark. When I started the car both lights came on all the way for 30 mins until I reached home. I took out the key from the ignition, reinserted the key and restarted the car and no lights came on. The following day I drove the car again and no lights came on.

    Should I take it to the dealer for check up now ? My next service is due in Oct 2010. Is it safe to drive ? It is unlikely that my brakes need attention as they are new brakes only 7 months old and I had only done 1000km since changing them. Any advice ?

  7. #7
    mac84 is offline Porsche Chatter
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    Re: PSM failure, ABS failure both lit up today

    Quote Originally Posted by looper_1234 View Post
    funnyly enough, i was on my way to the dealer to sort out some other problem when this happend.

    the dealer just reset the computer, and said its more or less a signal hickup due to the coldness.

    which sounded lame to me at the time, but i searched here which seemed to indicate; indeed this is the case.

    anyone else who's experienced this which turned out to be serious ?
    Had this happen once in my '08 987. Was braking hard on a steep downgrade and the abs did pulse a couple times first. Was very disconcerting at the time, but that was about 2 years and 18000 miles ago. Obviously an aberration.

  8. #8
    1st Cayman in USA's Avatar
    1st Cayman in USA is offline Porsche Enthusiast
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    Re: PSM failure, ABS failure both lit up today

    thats been happening to me lately, but i prefer it with no ABS nor PSM. so i am rather happy but it tends to go away after every start up but comes back while driving
    06 Cayman S , 06 S550 , 04 G500 , 11 SLS 63 AMG, 08 Crg BadBoy
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  9. #9
    sleepless's Avatar
    sleepless is offline Porsche Idealist
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    Re: PSM failure, ABS failure both lit up today

    Commonly caused by a dead or dying battery.
    Pete
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  10. #10
    prodgers is offline Porsche Novelist
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    sleepless

    so what the fix then ,Thats what happened to me .dead battery now the TPCicon and PSM and ABS are comming on peridocially
    "I love the smell of Carbon Fiber in the morning"

  11. #11
    sleepless's Avatar
    sleepless is offline Porsche Idealist
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    Re: sleepless

    The fix is a quick visit to the dealer
    Pete
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  12. #12
    J.Taylor is offline Porsche Person
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    Re: PSM failure, ABS failure both lit up today

    All psm ,check engine ,return to dealer faults all cleared from readings when I changed the battery on my 6 yearold cayman s

  13. #13
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    Re: PSM failure, ABS failure both lit up today

    This happened to me about 2 weeks after getting my used 2008 CS. My independent diagnosed it as a brake pedal switch that was starting to fail. Same issues with abs and psm going off and clearing with a restart.
    I got the brake pedal switch and after changing it I have not seen the warnings again.
    Might not be the same issue but that is what mine was doing and what fixed it.
    The brake pedal switch was under $20 fwiw

  14. #14
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    Re: PSM failure, ABS failure both lit up today

    +1

    Brake Pedal Switch.

    happened intermittantly with me, once the engined was switched off the faults would disappear, until sometimes the next day, or sometimes the next week.

    just a simple 10 minute fix...
    2009, GT3. Carrera White (new love of my life)
    2006 Cayman S 3.4, Cobalt Blue (gone, but not forgotten)

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