any way to reset ecu

  1. #1
    anyway to reset the ecu bar goin to garage
  2. #2
    try unplugging it overnight?
  3. #3
    Disconnect battery for a few hours, although some say 30 mins is enough
  4. #4
    Do not unplug the ecu!!!!!!!!

    Unplug the batter from both terminals and leave for anything up to 6 hours then reconnect the battery negative terminal first and bobs your uncle.
  5. #5
    Quote:
    Originally Posted by bedford126 View Post
    Do not unplug the ecu!!!!!!!!

    Unplug the batter from both terminals and leave for anything up to 6 hours then reconnect the battery negative terminal first and bobs your uncle.
    Why not unplug?
  6. #6
    if you unplug it there is a chance of you locking the immobiliser and making your ecu useless.
  7. #7
    how can you lock it if youve got the unlock code?
  8. #8
    Quote:
    Originally Posted by Railroader View Post
    how can you lock it if youve got the unlock code?
    always got a answer for everything.

    try it see what happens.
  9. #9
    Quote:
    Originally Posted by bedford126 View Post
    always got a answer for everything.

    try it see what happens.
    I have done.
  10. #10
    Quote:
    Originally Posted by bedford126 View Post
    if you unplug it there is a chance of you locking the immobiliser and making your ecu useless.
    Didnt know about this.....

    Unplugged and removed mine copletely when doing engine mount under ECU, luckily when finished and plugged back in, all was good.

    Glad i didnt see this b4 or wouldnt have done the mount. lol
  11. #11
    its not something that happens every time but can happen i have seen it a few times at work and its not worth the risk unless you power the car down correctly before hand.
  12. #12
    that wont happen, when its plugged back in the immobiliser box and chip are present to unlock it again.
    now on topic why do you want to reset your ecu?
  13. #13
    coz of air bag light wont turn off and my usual garage computer system wont connect and it started to annoy me just coz i changed the seaat belt tensioner and didn't leave battery off long enought be4 i started hopin that i can get it off different way as citreon themselves are also bunch of monkeys