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XC90 intermittent electrical failure - CAN bus related? XC90 2004

posted by  Steve_L on  Fri Jul 26 11:07 CST 2013
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last visit: Sun Jul 28 16:30 CST 2013
[RELATED]

Just wanted to give an update - I installed the heatsink on the CPU under the EMI shield, re-installed and it's been working great for the past month an a half! The first real test was the day after I installed it - it was in the upper 90's and I had the AC off, it did glitch once when I was driving up a hill, but hasn't done it since. I have had the AC on on hot days (duh!) and even with the outside temps in the upper 90's to 100 it has been rock solid - no more "glitches".

Just to recap - I removed the CEM module from under the dash, removed the approx 2"x2" silver metal cap on the board (which is an Electro Magnetic Interference, or EMI shield) and placed a heatsink out of this kit on the MCU/CPU (biggest chip there)http://www.amazon.com/gp/product/B005EDL2XW/ref=oh_details_o05_s00_i00?ie=UTF8&psc=1

I left the shield off (to promote better cooling) and reinstalled - problem solved!

SteveL






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