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Is4me2

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  1. Is4me2
    My SSN problem was fixed by flushing out the coolant and replaced entire coolant. Adding coolant to a good level in the container didn't work. I'm not an EV expert but an EE background, I think that if EV or hybrid is drivable then the DC to DC inverter should be ok. However if cooling system is not in an efficient minor then SSN shows the warning. It is not a defect component condition such that OBD2 reader can't tell error code.
  2.    Jrpavv reacted to a post in a topic: Stop Safely Now
  3. Is4me2
    No, I did not bleed the air out. Will try. Thanks for giving me the pdf info. I realize the air bubbles might stop the coolant flow. The coolant reservoir does drop its level awhile latter and I then refill it up to the full level... ******* After bleed the air out from the DC/DC inverter, adding more coolant to the reservoir where the coolant level is 1" above the cold level mark, I think the SSN problem is solved. I've driven continuously on FFH for 2.5 hrs, 130+ miles, with speed up to 75 mph, and SSN is never happen again! The engine temperature indicates at mid-point of center-and-H constantly. Engine highest speed goes up to 3000+ rpm. ?
  4. Is4me2
    No, I did not bleed the air out. Will try. Thanks for giving me the pdf info. I realize the air bubbles might stop the coolant flow. The coolant reservoir does drop its level awhile latter and I then refill it up to the full level...
  5. Is4me2 started following Stop Safely Now and Stop safely NOW
  6. Is4me2
    2012 FFH I have the same problem of SSN (Stop Safely Now). I have found MEC pump did not work and have replaced it. The problem is not solved. The SSN happens after driving on high way at speed 65+ mph about 30 minutes. Can key off/on and drive a short distance before it does it again. If speed is below 50 mph on a local road then I can drive car home without SSN problem. Before replacing the MEC pump, SSN happens even at speed of 50 mph. Yesterday, I did key off/on to drive after SSN, the display shows an orange wrench warning that did not show before I replaced the MEC pump. My cheap OBD-II reader finds no code. Any help would be appreciated.
  7. Is4me2
    2012 FFH I have the same problem of SSN (Stop Safely Now). I have found MEC pump did not work and have replaced it. The problem is not solved. The SSN happens after driving on high way at speed 65+ mph about 30 minutes. Can key off/on and drive a short distance before it does it again. If speed is below 50 mph on a local road then I can drive car home without SSN problem. Before replacing the MEC pump, SSN happens even at speed of 50 mph. Yesterday, I did key off/on to drive after SSN, the display shows an orange wrench warning that did not show before I replaced the MEC pump. My cheap OBD-II reader finds no code. Any help would be appreciated. Jrpavv, do you fix the SSN after replacing the wire harness? Is this a common problem?
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