the main ECM
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the main ECM
I have a 2004 xc90 and I bought the car and everything worked.
The next day The dash wouldn't light up; , the heater and radio would not work.
The Dash and heater would come back and sometimes the radio.
Every time it rains I had water on both sides of the floor (sun roof issue) fixed that.
Dash message center was all messed up so I replaced the dash cluster and now everything reads ok
Still the same issue but I can read the dash jiofi.local.html tplinklogin
I was told to then replace the CEM module (the main ECM) and was told by the supplier that nothing was wrong( but I said replace it)
So after spending $1500.00 in parts (I am a licensed tech) my Volvo still is screwed up
Help
The next day The dash wouldn't light up; , the heater and radio would not work.
The Dash and heater would come back and sometimes the radio.
Every time it rains I had water on both sides of the floor (sun roof issue) fixed that.
Dash message center was all messed up so I replaced the dash cluster and now everything reads ok
Still the same issue but I can read the dash jiofi.local.html tplinklogin
I was told to then replace the CEM module (the main ECM) and was told by the supplier that nothing was wrong( but I said replace it)
So after spending $1500.00 in parts (I am a licensed tech) my Volvo still is screwed up
Help
Last edited by JamieWelchahhh; Feb 13, 2026 at 12:39 PM.
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