okay this is my brothers car. Pretty confident it's the CEM going bad/overheating.
Symptoms: only in stop and go traffic, really hot days.
dash flicker
relays shutter
foglights turn on
4-5 times in a 20 minute period
next: It will do that, and then it will turn off the ABS and give brake failure pull over indicator
At that point the car has to be restarted to restore the brakes
this happens 3-10 times
then it does that and ALL electronics are gone except radio and engine keeps running. Obviously extremely dangerous, talking total electrical blackout minus stereo and somehow the engine still runs.
Restarting the car after letting it cool restores functionality eventually.
So having seen one thread about a similar issue before....it seems the consensus that the CEM has gone kaput. Would you all agree?
So now, what to do about it. It's about $1300+ for a new CEM as volvo has them encoded and crap so you can't use a used one at all. A NEW one has to be programed to the car etc. etc.
now as for replacement and all that
http://xemodex.com/ <--they make ABS modules and not a CEM, but what i'm mainly interested in is they seem to have cracked what ever encryption there is in the system to re-manufacture these parts. Could it be possible to re-program a CEM?
If not, whats the best way to go about replacing it? I hear it has to be gotten at from the firewall forward.
If it's a heat issue, has anyone managed to slap a heatsync/fan on the unit? We've got access to a full C&C capable of custom heatsyncs.
thanks in advance!
Symptoms: only in stop and go traffic, really hot days.
dash flicker
relays shutter
foglights turn on
4-5 times in a 20 minute period
next: It will do that, and then it will turn off the ABS and give brake failure pull over indicator
At that point the car has to be restarted to restore the brakes
this happens 3-10 times
then it does that and ALL electronics are gone except radio and engine keeps running. Obviously extremely dangerous, talking total electrical blackout minus stereo and somehow the engine still runs.
Restarting the car after letting it cool restores functionality eventually.
So having seen one thread about a similar issue before....it seems the consensus that the CEM has gone kaput. Would you all agree?
So now, what to do about it. It's about $1300+ for a new CEM as volvo has them encoded and crap so you can't use a used one at all. A NEW one has to be programed to the car etc. etc.
now as for replacement and all that
http://xemodex.com/ <--they make ABS modules and not a CEM, but what i'm mainly interested in is they seem to have cracked what ever encryption there is in the system to re-manufacture these parts. Could it be possible to re-program a CEM?
If not, whats the best way to go about replacing it? I hear it has to be gotten at from the firewall forward.
If it's a heat issue, has anyone managed to slap a heatsync/fan on the unit? We've got access to a full C&C capable of custom heatsyncs.
thanks in advance!
