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CEM failure

  #1  
Old 01-12-2015, 08:19 AM
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Join Date: Feb 2012
Location: Bahrain
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Default CEM failure

My Volvo S80 2004 2.9 has CEM failure results in all sorts of electrical problems in the car. I could feel a power loss, some sort of jerk which feels like I have been hit from behind! Then the ABS and break light go on and I get a message to break safely. The Clock resets and the Dim goes off. The engine still runs at this point and I notice the headlamps switch on!! The car is hard to drive in this state. When I stop and switch off the engine it will not start until I remove the battery terminal and replace it.

The SRS and chech engine messages are then displayed.

Volvo is charging alot to order a new one and replace it, my question is if I can take a CEM from another Volvo S80 2004 and put it into mine, will it work ?
I took to a garage and they changed the fuses and meddled around some other but it made no difference as it keeps happening every now and then.

please help
 
  #2  
Old 01-12-2015, 10:14 AM
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Location: Los angeles
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Nope. It has to be a new CEM from the dealers. Can't be a used one from another car since you can not reload the software into a CEM that already has software into it from another car
 
  #3  
Old 01-12-2015, 11:10 AM
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Are you sure about that ?
There are many places where they load softwares into cars, isn't it the CEM they load into ?

And do I even need to if it's from the same model and type Volvo ? :/
 
  #4  
Old 01-12-2015, 11:28 AM
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The keys are programmed in the CEM. So simply swapping one will not work. There are companies that rebuild them and can transfer the software though.
 
  #5  
Old 01-12-2015, 07:48 PM
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Location: Los angeles
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Well there you go, there's another answer for you. I personally have never recommended to have a CEM rebuilt seeing as how it is the most important module in the car. But if you want to do that then go right ahead
 
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