I just recently sent my CEM to Xemodex to have it checked for errors. The problem started when my DIM cluster was down and the car would not start. Had my ignition switch replaced which seemed to solve the problem when after a few miles into a test drive, the DIM cluster shut down and ABS Skid error messages started to appear and the wiper turned on as well as the headlights while the engine was still running. After pulling over and turning off the car, the key couldnt be removed and the car would not start so after testing another ignition switch and the same problems ensued i decided to send the CEM to canada for testing and possible repairs only to find out now that they couldnt find any fault nor any communication issues. They are offering me to have the data transferred to a replacement module. I need advice whether this is the best option or there might be another problem that might have been overlooked? Would really appreciate the advice! Thanks.

 

What year is your car? Did you get the DIM checked out? or have your car scanned for any codes using VIDA? a bad DIM can also get your key stuck in the ignition. In the p2 generation, you can swap the DIM with another part of the same number. Note your mileage will change with the donor DIM. I did this on my 06 s60 because I couldn't justify getting it done properly when a used one was $30 on ebay.

 

If there really is a problem with the CEM, and it's intermittent (which sounds likely), a new CEM makes a whole lot of sense. Otherwise, you could be chasing the problem for a long, long time (or have it leave you stranded in the future, usually when most inconvenient).

I would think that a CEM requires being programmed to the car's VIN (heck, the steering column lock module does!), though Dingus seems to have dodged that bullet (though having the mileage change is another larger bullet, IMHO, since it will set off any number of red flags when it's time to sell the car).

 

Thanks for the reply Dingus and Habby. The car is an S40 2007 non turbo. The 3 mechanics who checked it here in the Philippines all said its a CEM problem after replacing the ignition switch. And according to the tech from Xemodex Canada, there is no way to say for sure but if there were no faults found using their test beds and the problem is intermittent, it is not the same as the CEM is in good condition.

 

The mileage change was only about 1k miles, not far off, and not a huge issue in my location. Private sales on cars are "As is" and I do not expect to trade it in at a dealer. However, I was not lucky enough to avoid CEM issues haha. One of the first big ticket items I had to deal with when replacing my car. Had mine sent to xemodex and got an upgraded replacement from them with better cooling and water protection. About 700 bucks at the time